Allstar Performance Crank Pulley Mandrel 4101CSMBK 2 features a unique divider

2 features a unique divider system allowing drivers to create separate storage areas for the helmet and device

5 feet of filtering media (18% more than conventional filters)

You can use a large even if your neck is smaller to give more room over a collar bone

All RaceQuip 712 series belts come as a "pull down lap" design

Allstar Performance Crank Pulley Mandrel 4101CSMBK 2 features a unique dividerKit prevents mandrel bolt breakage and is made specifically for use with Allstar ALL31030 crank pulley. Mandrel is attached to the crankshaft pulley with three bolts, while the vibration damper is retained with the stock bolt. The mandrel bolt is then connected to the mandrel not to the crankshaft to reduce engine harmonics (helps prevent loosening or breaking). Kit includes spacers, pulley guides, and bolts to work effectively with most 3 , 4 , and 5