Polaflex Hub Kit for Mercury/Honda/Yamaha/Force D/E GROUP - 40-140 HP

For Mercury:

Mercury - 4 1/4" Gearcase - 15 tooth spline
40HP (4-Stroke/big foot)
50HP (4-Stroke/big foot)
60HP (4-Stroke/big foot) 1995-
60HP (Sea Pro/Marathon) 1995-
65HP (Model 650 4-Cyl) 1961-70
65HP (Model 650 2-Cyl) -1971
70HP 1987-89
75HP (2&4-Stroke) 1984-
75HP (Sea Pro/Marathon)
80HP 1978-89
80HP (Mariner) 1978-83
80HP (Yamaha) 1977-83
80HP (Model 800 2&4-Cyl) -1977
80HP (Model 850 2&4-Cyl) -1977
90HP (2&4-Stroke) 1978-
100HP 1988-
115HP (2&4-Stroke) 1978-
125HP 1994-
140HP (Inc. Sea Pro/Offshore) 1978-81
Models 900-1500 -1977
Force 75HP 1999-
Force 90/120/150HP 1995-

Mercury - 4 3/4" Gearcase - 15 tooth spline
90, 100, 115HP Command Thrust 2014-
135HP 1987-
150HP 1978-
175HP 1978-
200HP 1978-
220HP 1987-88
225HP 1980-
225 HP (Sea Pro/Marathon)
250-400 HP (2 & 4-Stroke) 1990-
3.4 Liter 1984-86
MERCRUISER STERNDRUVES
MODELS 1S, 1B, 1C -1982
MODELS 120, 140, 145 DTS -1982
MODELS 165, 228, 470, 485, 888, 898 -1982
MODELS 225S, 233, 255TRS, 260, 280TS, 330TRS -1982
MERCRUISER 120-260HP 1983-85
ALPHA ONE DRIVE (GEN.1 & GEN.2 ALL MOTORS & HP)
BRAVO ONE DRIVE (BRAVO ONE & BRAVO ONE X DRIVES ONLY)

For Honda:

15 spline tooth 4 1/4” Gearcase 75-90 HP

BF75-90HP 1995-98

For Force:

15 spline tooth 4 1/4” Gear case

75-150 HP (Thru Hub Exhaust) 1995-1999
85-150 HP (Duel Exhaust) 1988-1994

For Yamaha:

Product information about the Polaflex Hub Kit F21:

Cross Reference: SOLAS RBX-102B, Michigan Wheel 202 and 202SH, Turning Point 701"

The Polastorm F21 Hub Kit is an essential component specifically designed to enhance the performance of boats powered by Mercury, Honda, Yamaha, and Force engines. This complete kit is designed to optimize your boat's functionality and ensure smoother operation in a variety of marine conditions. With a comprehensive range of essential components, the F21 Hub Kit enhances your boating experience with improved stability and responsiveness.

The main difference between an aluminum and brass hub kit is that brass is softer and therefore more compliant in a crash, protecting the motor. Aluminum is stronger, lighter, and more durable, but less compliant. Brass is therefore more suitable for recreational use where the risk of contact with objects is higher, while aluminum is better for applications where durability and weight are crucial.

Brass hub kit:
- Material: Softer than aluminum.
- Advantage: Provides better protection for the engine and gears because the material can yield in the event of an impact or collision with an object.
- Disadvantage: Less strong and durable than aluminum.
- Application: Often used for recreational boats where the chance of contact with objects is greater.

Aluminum hub kit
- Material: Stronger, lighter and more durable than brass.
- Benefit: Provides greater durability and lighter weight.
- Disadvantage: Less compliant, which increases the risk of damage to the engine gears in the event of a collision.
- Application: Suitable for situations where durability and weight are important and the risk of impact is lower.

This kit contains:

- Shock absorber: Minimizes vibrations and shock transfer, for a comfortable ride.
- Thrust Stopper: Prevents unwanted thrust movements and ensures optimal alignment and performance.
- Front Ring: Provides a secure fit and good seal to protect critical components.
- Spacer: Ensures correct spacing and alignment within the structure, for better durability.
- Nut: Ensures a firm and secure connection of all components, improving overall reliability.

The F21 Hub Kit is carefully designed for seamless integration with your existing engine configuration. Its robust construction and innovative design not only enhance your engine's performance but also extend the life of critical components by reducing wear.

Important technical information:

- Compatibility: Mercury, Honda, Yamaha and Force engines
- Installation: Easy to install with standard tools
- Material: High-quality, corrosion-resistant brass and rubber