New MBP Adjustable Cam Pulleys for Desmoquattro Motors.

Advantages: Lighter weight (Stock pulley- 156 grams, MBP Adjustable Pulley- 99 grams) - reduces rotational inertia, increases belt life, increases engine response.

Adjustable Cam Timing (25 degrees) to optimize engine performance. Stock timing can be off as much as 15 degrees due to tolerance in key way placement and gear timing.

Made from 7075 Aircraft Grade High Tensile Aluminum. Hard Anodized.

Race Track Tested.

Fits 851, 888, 748, 916, 996, ST4, ST4S, Monster S4, S4R

Price is for set of 4 pulleys

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