The black Rennen Alloy Cog, made from 7075-T6 Aluminium, has 12 rounded teeth with a single speed specific profile and a central hole, shown from above on a white background.

Rennen Alloy Cog

Black / 13T
$33.42
$33.42 $49.88
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The black Rennen Alloy Cog, made from 7075-T6 Aluminium, has 12 rounded teeth with a single speed specific profile and a central hole, shown from above on a white background.
  • The black Rennen Alloy Cog, made from 7075-T6 Aluminium, has 12 rounded teeth with a single speed specific profile and a central hole, shown from above on a white background.
  • The black Rennen Alloy Cog, made from 7075-T6 Aluminium, has 12 rounded teeth with a single speed specific profile and a central hole, shown from above on a white background.
Rennen Alloy Cog

Rennen Alloy Cog

$33.42
$33.42 $49.88
Title

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.

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