POWER.
PARTS.
PERFORMANCE.

Rated power

500 hp / 372 kW

Displacement

4.6 L

Engine

Supercharged V8, 32-valve DOHC four-stroke

Full-throttle range

6,000–6,600 rpm

Shaft lengths

20, 25, 30 or 35 in

Midsection

Advanced Racing Core (ARC)

Gearcases

R-Drive or R-Drive Sport; 1.60:1

Controls

Digital Throttle & Shift (DTS)

Fuel

89 AKI minimum

Charging

115 A

Published dry weight

726 lb

Shaft length, steering, gearcase and propeller must be selected for the boat; no complete installation package is implied.

Rated power

400 hp / 298 kW

Displacement

5.7 L

Engine

Naturally aspirated V10, 40-valve DOHC four-stroke

Full-throttle range

6,000–6,600 rpm

Shaft lengths

20, 25, 30 or 35 in

Midsection

Racing Advanced MidSection (Racing AMS)

Gearcases

Sport Master or 5.44 in HD; 1.60:1

Controls

Digital Throttle & Shift (DTS)

Fuel

87 AKI minimum

Charging

150 A

Published dry weight

695 lb / 315 kg

This current 400R is the 5.7 L V10 model; the former supercharged inline-six 400R is not this entry.

Rated power

300 hp / 224 kW

Displacement

4.6 L

Engine

Naturally aspirated V8, 32-valve DOHC four-stroke

Full-throttle range

5,800–6,400 rpm

Featured shaft length

15 in / 381 mm

Featured midsection

Heavy Duty Conventional MidSection (HD CMS)

Gearcases

Torque Master or Sport Master

Gear ratios

Torque Master 1.75:1; Sport Master 1.60:1 or 1.75:1

Controls

DTS or mechanical

Fuel

87 AKI / 91 RON minimum

Charging

85 A

Featured lightest weight

545 lb / 247 kg

Factory variants

name: 300R 15-inch HD CMS; status: Featured on current dedicated product page; shaft_length: 15 in; source_url: https://www.mercuryracing.com/engines/r-series/300.html; name: 300R CMS; status: Documented in linked factory brochure; confirm current orderability; shaft_length: 20 in; source_url: https://www.mercuryracing.com/content/dam/mercury-racing/technical/documents/MR_RseriesBrochure.pdf; name: 300R HD CMS configurations; status: Documented in linked factory brochure; confirm individual shaft/gearcase combinations; source_url: https://www.mercuryracing.com/content/dam/mercury-racing/technical/documents/MR_RseriesBrochure.pdf; name: 300R Racing AMS; status: Documented in linked factory brochure; confirm current orderability; controls: DTS with power steering; charging: 115 A; source_url: https://www.mercuryracing.com/content/dam/mercury-racing/technical/documents/MR_RseriesBrochure.pdf

Main specifications describe the 15-inch HD CMS in the dedicated current product sheet.

An older factory R-Series brochure still linked from current model pages also documents CMS, HD CMS and Racing AMS configurations. Confirm which non-15-inch configurations remain orderable.

Do not combine the featured 15-inch model's weight/charging specifications with a Racing AMS package.

Rated power

250 hp

Displacement

4.6 L

Engine

Naturally aspirated V8 four-stroke

Full-throttle range

5,600–6,200 rpm

Shaft length

20 in

Gearcase

Sport Master; 1.75:1

Controls

Mechanical throttle and shift

Fuel

87 AKI / 91 RON minimum

Charging

85 A

Published dry weight

520 lb

Rated power

200 hp / 149 kW

Displacement

3.4 L

Engine

Naturally aspirated V6, 24-valve DOHC four-stroke

Full-throttle range

5,800–6,400 rpm

Spec-sheet shaft length

20 in / 508 mm

Spec-sheet midsection

Tri-ram Conventional MidSection (CMS)

Gearcases

Torque Master or Sport Master; 1.75:1

Controls

Digital Throttle & Shift (DTS)

Fuel

87 AKI / 91 RON minimum

Charging

85 A / 1,071 W

Spec-sheet lightest weight

469 lb / 213 kg

Factory variants

name: 200R 20-inch CMS; status: Verified dedicated factory specification sheet; source_url: https://www.mercuryracing.com/content/dam/mercury-racing/engines/r-series/200r/MER-6219-008_Racing_200R_SpecSheet.pdf; name: 200R 15-inch configuration; status: Mentioned on current webpage; conflicting specifications and warranty require factory confirmation; source_url: https://www.mercuryracing.com/engines/r-series/200R.html

Specifications here use the dedicated factory 200R PDF. Its 20-inch CMS configuration conflicts with the webpage table showing a 15-inch heavy-duty midsection and competition-only warranty language.

The webpage narrative mentions both 15-inch and 20-inch shafts. Confirm the 15-inch configuration, technical specifications and warranty before offering a particular package.

The factory page's hero image points to a file named for an 1100 sterndrive. It has not been accepted as a verified 200R image.

Rated power

150 hp / 112 kW

Displacement

3.4 L

Engine

Naturally aspirated V6, 24-valve DOHC four-stroke

Full-throttle range

5,200–6,000 rpm

Shaft lengths

20 in / 508 mm; 25 in / 635 mm

Midsection

Tri-ram Conventional MidSection (CMS)

Gearcase

4.8 in; 1.85:1

Controls

Digital Throttle & Shift (DTS)

Fuel

87 AKI / 91 RON minimum

Charging

85 A / 1,071 W

Published dry weights

20 in: 475 lb / 216 kg; 25 in: 485 lb / 220 kg

Left- and right-hand rotation choices are specified for the 25-inch version.

Image URL was obtained from the official 150R hero link, but the image fetch timed out; visual identity has not been independently checked.

Rated power

60 hp

Displacement

1.0 L

Engine

Naturally aspirated inline-four four-stroke

Full-throttle range

5,800–6,300 rpm

Shaft length

15 in

Gearcase

4.25 in high-thrust; 2.33:1

Controls

Mechanical throttle and shift

Fuel

87 AKI / 91 RON minimum

Charging

18 A

Published dry weight

268 lb

Power at transom

1,550 hp / 1,350 hp

Displacement

9.0 L

Engine

Twin-turbo V8 QC4, 32 valves and four camshafts

Full-throttle range

1,550 hp: 6,200–6,800 rpm; 1,350 hp: 6,000–6,500 rpm

Fuel by calibration

1,550 hp: 112 AKI racing fuel; 1,350 hp: 91 AKI minimum

Compression ratio

7.8:1

Drive

M8

Transmission

Mercury Racing hydraulic, dry sump

Charging

105 A

Calibration selection

Electronic key fobs

This is one dual-calibration engine family, not two separate engines. Fuel and warranty conditions depend on the selected calibration.

Power at transom

1,350 hp / 1,100 hp

Displacement

9.0 L

Engine

Twin-turbo V8 QC4, 32 valves and four camshafts

Full-throttle range

6,000–6,500 rpm

Fuel by calibration

1,350 hp: 91 AKI minimum; 1,100 hp: 89 AKI minimum

Compression ratio

7.8:1

Drive

M8

Transmission

Mercury Racing hydraulic, dry sump

Charging

95 A

Calibration selection

Electronic key fobs

This is one dual-calibration engine family. Confirm fuel selection and the complete drive/rigging package for the installation.

Power at transom

1,100 hp

Displacement

9.0 L

Engine

Twin-turbo V8 QC4, 32 valves and four camshafts

Full-throttle range

6,000–6,500 rpm

Fuel

89 AKI minimum

Compression ratio

7.8:1

Drives

M6 or M8

Transmission

Mercury Racing hydraulic, dry sump

Charging

105 A

The recreational 1100 and mechanically sealed 1100 Competition are separate catalogue entries.

Power at transom

700 hp

Displacement

8.2 L

Engine

Supercharged V8 with charge cooling

Full-throttle range

4,800–5,200 rpm

Fuel

89 AKI minimum

Compression ratio

7.5:1

Drives

M6 standard; M8 for specified applications

Transmission

NXT1 dry-sump transmission

Published package weight

1,548 lb

NXT1 is named as the transmission on this engine page; it is not evidence of a separately marketed current NXT drive.

Power at transom

600 hp

Displacement

8.2 L

Engine

Supercharged V8 with charge cooling

Full-throttle range

4,800–5,200 rpm

Fuel

87 AKI minimum

Compression ratio

7.5:1

Drives

Bravo One XR; Bravo One XR Sport Master; Sport Master Short

Drive ratios

1.35:1 or 1.50:1

Charging

90 A

Published package weight

1,267 lb

Transom option

Integrated Transom System (ITS)

Power at transom

565 hp

Displacement

8.7 L

Engine

Naturally aspirated V8

Full-throttle range

5,000–5,400 rpm

Fuel

89 AKI minimum

Compression ratio

8.7:1

Drives

Bravo One XR; Bravo One XR Sport Master; Sport Master Short

Drive ratios

1.35:1 or 1.50:1

Charging

90 A

Published package weight

1,201 lb

Transom option

Integrated Transom System (ITS)

Power at transom

520 hp

Displacement

8.6 L (current factory webpage)

Engine

Naturally aspirated V8

Full-throttle range

4,800–5,200 rpm

Fuel

87 AKI minimum

Compression ratio

8.7:1

Drives

Bravo One XR; Bravo One XR Sport Master; Sport Master Short; Bravo Three XR

Charging

65 A

Published package weight

1,218 lb

Transom option

Integrated Transom System (ITS)

The current official page lists 8.6 L. Do not substitute the 565 model's 8.7 L displacement.

Rated power

300 hp

Displacement

4.6 L

Engine

V8 four-stroke

Midsection

15 in heavy-duty midsection

Mounts

Solid

Controls

Race-calibrated SmartCraft

Gearcase type

Surface-piercing options

Use

Offshore competition; single- and dual-engine racing classes

Competition-only catalogue entry.

Power and 4.6 L V8 architecture are explicitly confirmed by the factory 300R/300 ROS feature. Do not copy the similarly named 300R 15-inch product sheet as a 300 ROS specification.

The linked official image is contextual racing photography associated with 300 ROS, not an isolated engine photograph.

Rated power

60 hp

Displacement

60.7 cu in

Engine

Inline-four four-stroke

Full-throttle range

6,000–6,400 rpm

Shaft length

15 in

Gearcase

3.4 in; 1.83:1

Shifting

Forward, neutral and reverse; mechanical

Fuel

87 AKI minimum

Starting

12 V electric

Charging

18 A

Published dry weight

247 lb

Competition class

UIM F4

Competition-only catalogue entry; class eligibility and race setup require confirmation.

Power

200 hp model rating; factory prose states more than 200 hp

Displacement

3.4 L

Engine

V6 DOHC four-stroke

Peak engine speed

6,800 rpm

Compression ratio

11:1

Fuel

91 AKI minimum

Controls

Digital throttle

Gearcase

Super Speed Master IV; direct drive, no neutral or reverse

Starting

24 V electric

Overdrive ratio

0.818 (22:18)

Overall drive ratio

0.927

Competition classes

UIM F2 and APBA OPC

Competition-only catalogue entry. The factory prose uses 'more than 200 horsepower' while its summary table labels the model at 200 hp.

Power

250 hp model rating; factory prose states more than 250 hp

Displacement

4.6 L

Engine

V8 four-stroke

Peak engine speed

6,800 rpm

Midsection

12 in with power trim and lift

Gearcase

Super Speed Master IV; direct drive, no neutral or reverse

Controls

Digital throttle

Starting

24 V electric

Charging

85 A

Published dry weight

436 lb / 198 kg

Competition class

APBA Formula One

Competition-only catalogue entry. Use factory confirmation for fuel and gear ratios; the webpage has inconsistent ratio/fuel formatting.

Rated power

360 hp

Displacement

4.6 L

Engine

V8 four-stroke

Peak engine speed

7,000 rpm

Midsection

12 in with power trim and lift

Gearcase

Super Speed Master IV; 1.13:1; direct drive

Controls

Digital throttle; no neutral or reverse

Fuel

91 AKI minimum

Starting

24 V electric

Charging

85 A

Published dry weight

430 lb

Competition class

UIM F1H2O

Competition-only catalogue entry. Factory overdrive choices are 0.714 (35:25) or 0.739 (23:17); corresponding overall drive ratios are 0.809 or 0.837.

Power at transom

1,100 hp

Displacement

9.0 L

Engine

Twin-turbo V8 QC4, 32 valves and four camshafts

Full-throttle range

6,000–6,500 rpm

Fuel

89 AKI minimum

Compression ratio

7.8:1

Available packages

Engine only; M6; M8

Transmission

Mercury Racing hydraulic, dry sump

Charging

105 A

Competition use

Class 1 offshore racing

Competition-only catalogue entry, separate from the recreational 1100.

Factory page specifies no warranty; race eligibility and sealed-engine requirements must be confirmed for the intended class.

Blades

5

Finish

Lab

Diameter

14.75–15.63 in

Pitch range

26–35 in

Rotation

RH / LH

Rake

18° for 26–28 in pitch; 15° for 30–35 in pitch

Barrel options

0, 1, 2 or 3 in

Factory webpage contains an apparent 17.75 in diameter typo in one part-number row; omitted.

Includes factory propeller case.

Outboards with 1.25 in shafts in the 300–400 hp versions or 1.50 in shafts in the 500 hp version. Match the horsepower-specific propeller and shaft before ordering.

Blades

4

Finish

Pro

Diameter

15.25 in

Pitch range

20–33 in

Rotation

RH / LH

Factory lists two-stroke and four-stroke outboards and sterndrives. Select the correct shaft hub, pitch and rotation for the installation.

Blades

4

Finish

Lab

Diameter

15.25 in

Pitch range

22–37 in

Rotation

RH / LH

Factory describes four-stroke outboards and sterndrives; verify horsepower, gearcase, hub and propeller clearance for the chosen version.

Blades

4

Finish

Pro

Diameter

15.25 in

Pitch range

19–29 in

Rotation

RH / LH

Pitch range follows product introduction and part-number table; the same page has a conflicting 20–33 in summary field.

Half-inch pitches are listed for RH models; LH sizes vary.

Factory lists two-stroke and four-stroke outboards and sterndrives, with single-engine fishing and multi-engine center-console applications.

Blades

4

Finish

Lab

Diameter

14.75 in

Pitch range

22.5–33 in

Rotation

RH / LH

Page heading incorrectly reads Bravo I Lab Finish, but URL, introduction, dimensions and index identify Bravo I OC.

Factory specifies two-stroke outboard catamarans. Confirm hub and rotation; half-inch low-pitch offerings are RH.

Blades

4

Finish

Pro

Diameter

15.3 in

Pitch range

19–24 in

Rotation

RH

Factory specifies single-outboard hulls using two-stroke or four-stroke power. Pitch offerings are 19, 20, 21, 22 and 24 in.

Blades

4

Finish

Pro

Diameter

15.25 in

Pitch range

22–31.5 in

Rotation

RH

Originally specified for Mercury V6 OptiMax, OptiMax XS and OptiMax Pro XS. Current page also describes selected single-engine four-stroke uses; match by exact installation.

Blades

4 front / 3 rear

Finish

Pro

Diameter

14–16 in

Pitch range

20–28 in

Rotation

LH front / RH rear

The page and index publish conflicting generic horsepower ranges; fitment should follow the specific engine/drive and dealer confirmation.

Explicitly fits standard Bravo Three, Bravo Three X and Bravo Three XR drives. Factory prose recommends 260–350 hp diesel and 260–525 hp gasoline applications.

Diameter

10.38 in

Pitch range

18 in

Rotation

RH

Part number

43592A71

Current index calls the finish Lab, while the product page says Pro and ambiguously lists 3 or 4 blades. Disputed fields omitted pending factory part-number confirmation.

The hub-kit page mentions legacy Chopper II products; do not apply legacy dimensions or hubs to this small current model without verification.

The current product page specifies 40–60 hp outboards and elevated engine mounting.

Blades

3

Finish

Pro

Diameter

16 in

Pitch range

16.5–22.5 in

Rotation

RH / LH

Factory index and individual page horsepower ranges differ; no universal horsepower fitment asserted.

Factory lists four-stroke outboards and sterndrives; particularly intended for multi-engine center consoles and bay boats.

Blades

3

Finish

Lab

Diameter

14.5 in

Pitch range

26–32 in

Rotation

RH

Factory describes single-engine bass, flats and modified V-bottom boats with outboards up to 300 hp. Match the exact shaft and over-hub hardware.

Blades

5

Finish

Lab

Diameter

15 or 15.25 in

Pitch range

22.3–34 in

Rotation

RH / LH

22.3–34 in is the published headline range; the visible part-number table starts at 22.5 in. Exact pitch availability requires confirmation.

Factory describes single and multi-engine uses from 250R outboards to 600 SCi sterndrives; hub, horsepower version and clearance must match.

Blades

5

Finish

Lab

Diameter

15.25 in

Pitch range

22.5–34 in

Rotation

RH / LH

Pitch range follows introduction and part-number table; the facts panel incorrectly repeats 20–33 in.

Specifically developed for the 4.6 L V8 300R with Sport Master gearcase. Broader uses need application confirmation.

Blades

5

Finish

Lab

Diameter

15, 15.25 or 15.63 in

Pitch range

23–35 in

Rotation

RH / LH

Factory identifies 15.25 in for Bravo XR Short Sport Master and 15.625 in for Bravo XR Dual Water Pickup and Sport Master; confirm the chosen casting and clearance.

Blades

5

Finish

Lab

Diameter

15, 15.25 or 15.63 in

Pitch range

23–35 in

Rotation

RH / LH

Range follows current facts panel and part-number table; introductory prose gives an older narrower 24–34 in range.

Factory lists outboards up to 500 hp and sterndrives up to 600 hp; choose the matching hub, diameter and pitch.

Blades

5

Finish

Lab

Pitch range

26–40 in

Rotation

RH / LH

Rake

15° or 18°

Build options

300, 400 or 500 hp blade profiles; custom half pitches and diameters

Factory text lists 14.63–15.25 in diameters while the facts panel lists 14.5–15.63 in; exact diameter is custom-order dependent.

Includes factory propeller case.

Factory specifies Sport Master or R-Drive Sport gearcases. Versions use 300, 400 or 500 hp blade profiles; the 500B version has 1.50 in broached splines for 500R.

Blades

4

Finish

Pro / Lab

Diameter

14.5 in

Pitch range

22.5–32 in

Rotation

RH

Published overall pitch range is 22.5–32 in; the Lab range is separately shown as 24–32 in.

Factory names OptiMax 300XS, OptiMax Pro XS, Verado 400R and Verado Pro FourStroke examples. Engine generation, hub and horsepower must be checked.

Blades

4

Finish

Pro

Rotation

RH / LH

Pitch range

13–27.5 in

Pitch range follows current-linked February 2024 factory sell sheet. Webpage shows an incomplete 13–17 in table and conflicting diameters; exact diameter remains part-number dependent.

Factory describes Verado and Pro XS FourStroke outboards and MerCruiser sterndrives. Hub, diameter and pitch require part-number confirmation.

Blades

4

Finish

Pro

Diameter

12.7, 13, 13.5 or 14 in

Pitch range

12–21 in

Rotation

RH

Developed for Mercury Racing 60R; factory also lists suitable outboards up to 115 hp. Match gearcase diameter and hub before ordering.

Blades

5 or 6

Finish

Lab

Diameter

14.5–18 in

Pitch range

26–40 in

Rotation

RH / LH

Rake

12°, 15°, 18° or 21°

Blade-profile options

Custom 600–1800 hp curves; application dependent

Custom build family; published overall horsepower range does not make every version interchangeable.

Designed for M6 and M8 drives. A Bravo XR Sport Master version is offered for 520–600 hp installations; version-specific fitment is essential.

Blades

3

Finish

Lab

Diameter

12 in

Pitch range

22 in

Rotation

RH

Factory specifies 40–60 hp outboards, primarily cats and tunnels, with limited V-bottom use.

Blades

4

Finish

Pro / Lab / Lab Satin

Diameter

15 in

Pitch range

18–27.5 in

Rotation

RH / LH

Pitch increments

0.5 in

Factory specifies the Flo-Torq HD modular hub for boats over 65 mph.

Current page lists outboard and sterndrive applications. For 500R, use the correct 1.50 in Ultralock hub and required gearcase seal ring.

Factory power envelope

Up to 600 hp

Factory speed envelope

Up to 85 mph

Installations

Single, twin or triple

Factory lists 520, 565 and 600 SCi engine packages. Exact ratio, transom and propeller combination require confirmation.

Intended speed regime

Above 85 mph

Water pickups

Four low-water slots

Current factory pages list 520, 565 and 600 SCi. Specify rotation, ratio, transom height and propeller clearance.

Length difference

2 in shorter than standard Sport Master

Installation difference

Engine / transom X dimension can be lowered 2 in

Current factory pages list 520, 565 and 600 SCi; boat-specific installation engineering is required.

Gear ratios

1.69:1, 1.53:1, 1.40:1, 1.30:1

Factory power rating

1100 hp

Factory input torque rating

1600 lb-ft

Rotation

RH / LH

Factory lists M6 with 700 SCi and 1100 packages. Ratio, transmission and transom selection must follow the engine package.

Gear ratios

1.69:1, 1.53:1, 1.40:1, 1.30:1

Factory power rating

1650 hp

Factory input torque rating

1600 lb-ft

Rotation

RH / LH

Factory lists M8 with 1100 and dual-calibration QC4 packages; selected 700 SCi installations also use M8. Confirm complete engine/transmission package.

Propeller arrangement

Counter-rotating pair

Factory engine association

520

Current factory drive page explicitly pairs Bravo Three XR with the Mercury Racing 520. Confirm ratio, transom and propeller configuration for the boat.

Control system

Mercury Digital Throttle & Shift

Handle finishes

All silver; or red throttle / black shift

Features

Synchronization and shadow-mode configurations

Same page says both up to six and up to five engines; maximum engine count is withheld until exact rigging generation is confirmed.

For compatible Mercury DTS installations; factory describes integration with Joystick Piloting for Outboards.

Maneuvering

Sideways, diagonal and rotation

System family

SmartCraft / DTS

Racing accessory page references older VesselView 4/7 and Skyhook/Autopilot bundles. Do not represent every old bundle as current or compatible with every R-Series model.

Requires a compatible Mercury steering, DTS and engine package; available features depend on rigging generation.

Operating range stated by factory

Up to 50 mph

Control system

SmartCraft DTS

Specifically for compatible Mercury Racing DTS outboards and sterndrives running partially surfaced. Factory directs non-surfacing applications to standard Mercury Marine Active Trim DTS.

Built-in setback

7 in

Steering

Integral power-steering cylinders

Factory specifies Bravo One XR sterndrives. Confirm package-specific engine, drive and transom compatibility.

Size models

150S, 280S, 380S

Factory color options

12

Position indication

Electronic sender; compatible VesselView / NMEA systems

Factory variants

name: 150S; part_number: 841944A02; recommendation: 21–30 ft boat length; name: 280S; part_number: 842768A05; recommendation: 31 ft and longer; name: 380S; part_number: 841945A02; recommendation: 31 ft and longer

The sheet remains linked by the current page but carries a 2015 copyright and 2016 introduction text; part numbers and supply require supplier confirmation.

Metric equivalents in the old sheet conflict with its 31 ft minimum; use imperial limits pending factory confirmation.

Factory-linked recommendation sheet lists 150S for 21–30 ft boats and 280S/380S for boats 31 ft and longer; final tab sizing requires hull-specific confirmation.

Configurations

Stage 1; Stage 2

Stage 2

Includes transom-mounted mufflers

Factory variants

name: Stage 1; description: Underwater/off-plane outlet arrangement without transom-mounted mufflers.; name: Stage 2; description: Complete arrangement with transom-mounted mufflers.

Factory describes regional noise compliance for specific complete packages; catalogue listing is not a blanket compliance certification.

Current 600 SCi page lists X-Haust as an option. Accessory history also mentions HP600 SCi and EU662 SCi; confirm the precise engine and exhaust installation.

Applications

Single-engine Mercury DTS

Sensor packaging

Approximately 20% of predecessor sensor size

Factory states compatibility with current and legacy DTS rigging in single-engine performance boats; confirm harness and control configuration.

Fixture choices

M6/M8 cleavers; outboard cleavers / Flo-Torq propellers

Choose the internal fixture matching the propeller. Factory includes the case with new Precision CNC cleavers and Altitude and also sells it separately.

Sizes

Small 15 in; large 18 in

Small fit range

14.50–15.63 in propeller diameter

Large fit range

M6/M8 sterndrive cleavers

Factory variants

name: Small; size: 15 in; fitment: 14.50–15.63 in propellers; name: Large; size: 18 in; fitment: M6/M8 sterndrive cleavers

Choose cover size and verify the specific propeller fit.

Part number

835258K1

Propeller shaft diameter

1.00 in

Factory page repeats the 835258K2 photograph for this variant; image omitted to avoid a misleading product photo.

Factory examples include Lightning E.T. and legacy Pro E.T., Chopper II and Cleaver. Do not assume legacy and current small-engine Chopper II interchange.

Part number

835258K2

Propeller shaft diameter

1.00 in

Factory examples include Bravo I, Tempest Plus, Fury and Pro Max.

Part number

8M0183487

Propeller shaft diameter

1.25 in

For 1.25 in shafts and Flo-Torq-equipped propellers.

Part number

8M0217764

Propeller shaft diameter

1.50 in

For 500R and compatible Flo-Torq props such as Ventera/MAX5. The labyrinth seal ring is required at the 5.9 in gearcase.

Part number

8M0179579

Propeller shaft diameter

1.25 or 1.50 in

Replaces hardware for 8M0183487/8M0217764 and is the required hardware set for Outboard CNC Cleavers on 1.25/1.50 in shafts.

Viscosity

10W-30

Base

Full synthetic

Current factory page recommends MRX for all 250R, 300R, 400R and 500R outboards, alongside Apex competition use. Check the engine manual for other models.

Viscosity

25W-50

Factory page erroneously shows hub-kit photos in lubricant content; unsuitable images omitted.

Package sizes, supplier part numbers and Canadian prices were not verified.

Factory recommends it for selected outboards and Mercury Racing sterndrives from 520 to 1550 hp; use the exact engine manual to confirm.

Viscosity

85W-90

Base

Full synthetic

Factory page erroneously shows hub-kit photos in lubricant content; unsuitable images omitted.

Package sizes, supplier part numbers and Canadian prices were not verified.

Current Racing page describes use in all Mercury Racing outboard and sterndrive applications; follow the specific gearcase service manual.

Engine family

500R

Gear ratio

1.60:1

Torpedo diameter

5.9 in

Propeller shaft

1.50 in

Maximum propeller diameter

17 in

Factory application range

85–100 mph

Listed as a current factory engine configuration option. Replacement assembly, shaft length, ratio, rotation and installation compatibility must be selected by engine serial number; not a universal standalone kit.

Specific to Mercury Racing 500R. Choose the correct rotation, skeg camber, shaft length and water-inlet configuration.

Engine family

500R

Gear ratio

1.60:1

Torpedo diameter

5.9 in

Propeller shaft

1.50 in

Maximum propeller diameter

17 in

Factory application range

Above 100 mph

Listed as a current factory engine configuration option. Replacement assembly, shaft length, ratio, rotation and installation compatibility must be selected by engine serial number; not a universal standalone kit.

Specific to Mercury Racing 500R surfacing installations. Factory describes no-camber and RH-camber skeg choices.

Factory application range

Above 85 mph

400R ratio

1.60:1

300R 15 in HD CMS ratios

1.60:1 or 1.75:1

200R ratio

1.75:1

Listed as a current factory engine configuration option. Replacement assembly, shaft length, ratio, rotation and installation compatibility must be selected by engine serial number; not a universal standalone kit.

Engine-specific versions are listed for current 200R, 250R, 300R and 400R. The variants are not interchangeable by name alone; match the engine, shaft length, rotation and skeg.

300R 15 in HD CMS ratio

1.75:1

200R ratio

1.75:1

Factory 200R application range

Up to 85 mph

Listed as a current factory engine configuration option. Replacement assembly, shaft length, ratio, rotation and installation compatibility must be selected by engine serial number; not a universal standalone kit.

An isolated, unambiguous Torque Master product photo was not verified; generic combined gearcase image omitted.

Current 200R and 300R 15 in HD CMS pages list Torque Master. Confirm engine-specific shaft, rotation, ratio, skeg and hub before quoting.

Engine family

V10 400R

Gearcase size

5.44 in

Gear ratio

1.60:1

Listed as a current factory engine configuration option. Replacement assembly, shaft length, ratio, rotation and installation compatibility must be selected by engine serial number; not a universal standalone kit.

Verified on the current 5.7 L V10 400R page. Do not infer interchange with earlier Verado or other R-Series generations.

Engine family

60R

Gearcase diameter

4.25 in

Gear ratio

2.33:1

Engine shaft length

15 in

Skeg

Straight

Listed as a current factory engine configuration option. Replacement assembly, shaft length, ratio, rotation and installation compatibility must be selected by engine serial number; not a universal standalone kit.

Factory configuration of the Mercury Racing 60R. Select replacement assemblies by engine serial number; the current Racing page calls it High-Thrust rather than Command Thrust.

Engine family

150R

Gearcase diameter

4.8 in

Gear ratio

1.85:1

Engine shaft lengths

20 or 25 in

Counter-rotation

25 in shaft configuration

Listed as a current factory engine configuration option. Replacement assembly, shaft length, ratio, rotation and installation compatibility must be selected by engine serial number; not a universal standalone kit.

Factory configuration of the current 3.4 L V6 150R. Match exact shaft length and rotation; the factory states LH/RH twin-engine capability for the 25 in configuration.