Unorthodox Pulleys sets in stock
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Rotating mass robs your engine of power, unfortunately there is no way to remove all the rotating mass, but you can certainly try. These lightweight replacements allow the motor to turn with less resistance adding horse power. The Ultra Street Sets are CNC-machined from lightweight 6061-T6 aluminum billet. Premium 6061-T6 aluminum billet ensures the consistency of the material's strength and balance. Tolerances for each crank and accessory pulley are held to within .001". In addition to the numerous machining steps taken to ensure the crank pulley is the lightest possible design, each accessory pulley is also lighter than the factory piece it replaces and includes lightening holes where possible.

 

So these are NOT underdriven, just light weight? Are they available in any color other than natural?

 

only in stainless and black at this time.

we have underdriven as well

 

many many many left..if i didnt mention that already