


Rennen Alloy CogRennen Single Speed Cogs are precision machined from aircraft quality 7075 T6 Aluminium (83% stronger than 6061) and polished to a beautiful lustre, offering the highest performance at the right price. Rennen Cogs are 3 16" thick at the Spline interface assuring that you won't damage your precious hubs. Only Rennen Cogs offer a single speed specific tooth profile which have been designed to extend tooth life. Get them way up in the 18 19T range to
Quick Dispatch:
Your Rennen Alloy Cog orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your Rennen Alloy Cog ships.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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