This 37-tooth precision-machined steel rear sprocket is designed for motorcycles running a 520 pitch drive chain. With a lower tooth count, the 37T provides a taller final drive ratio compared to larger rear sprockets — favouring higher top-end speed and relaxed highway cruising over aggressive low-end acceleration.
Key Features
- 37-tooth rear sprocket for 520 pitch chain
- Precision-machined steel for strength, durability, and efficient power delivery
- Taller gearing ratio suited to top-end speed and highway riding
- Long service life — steel construction outlasts alloy alternatives
What does a 37T rear sprocket do to performance?
A smaller rear sprocket raises the final drive ratio, reducing engine revs at any given speed for a more relaxed cruising character and improved top-end potential. This suits riders prioritising highway comfort and speed over aggressive acceleration.
Frequently Asked Questions
What chain pitch does this suit? Designed for 520 pitch chains. Always confirm your existing chain pitch before purchasing.
How does 37T compare to a larger rear sprocket? Fewer teeth means taller gearing — better top speed and fuel efficiency at the expense of low-end acceleration compared to a higher tooth count sprocket.
Should I replace my chain and front sprocket at the same time? Yes. Replacing the full drivetrain together ensures even wear and maximises component longevity.
