The RK 45-tooth steel rear sprocket is a durable, reliable replacement sprocket designed for motorcycles running a 525-pitch drive chain. Built from hardened carbon alloy steel, it prioritises wear resistance and longevity over lightweight performance — making it an ideal choice for street and track riders who demand a sprocket that lasts.
Key Features
- 45-tooth rear sprocket for 525-pitch chain
- Carbon alloy steel construction for superior wear resistance and strength under load
- More durable than aluminium alternatives — less prone to tooth rounding or failure
- Suitable for general street and track use
- Part number: 32-35F-45
Steel vs Alloy — What to Consider
Steel sprockets outlast aluminium significantly, making them the preferred choice for high-mileage street riding and track use where durability matters most. The trade-off is slightly greater weight and rotational inertia compared to lighter alloy options.
Frequently Asked Questions
What chain pitch does this suit? Designed for 525-pitch chains. Always confirm your existing chain pitch before purchasing.
Is steel better than aluminium for longevity? Yes. Steel sprockets offer significantly greater wear resistance, making them the better long-term choice for street and performance riding.
Should I replace my chain and front sprocket at the same time? Yes. Replacing the complete drivetrain together ensures even wear and maximises component longevity.
