The Rennen Alloy Cog, made from 7075-T6 Aluminium, boasts a 12-tooth single-speed design and intricate inner details on a white background.

The Rennen Alloy Cog is a shiny metallic bicycle sprocket with 12 single speed specific tooth profiles, crafted from 7075-T6 Aluminium, set against a white background.

Description

Rennen 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 really experiment with that race gearing.

Weight: At 17 grams (16T) this makes Rennen Cogs one of the lightest on the market.

Features

7075-T6 aircraft grade alloy. Precision machined from 7075-T6, which Rennen rate as 83% stronger than 6061.
3/16 inch at the spline. Full thickness where the cog meets the driver, so it will not damage the splines on your hub.
17 grams in 16T. One of the lightest cogs on the market, taking weight straight off the back of the bike.
Single speed tooth profile. A single speed specific tooth shape designed to extend tooth life.
Polished to a lustre. The finish is polished rather than coated, so it keeps its shine as it wears in.