Clutch Rollers, Set of 4, for TAPP Primary SIZE:+3 mm All programs have the following

All programs have the following features:

a DNC microphone for clear transmissions

EVP Big Injector Tunes also require upgraded BOV or BRV

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Polaris RZR RS1 Complete Communication Kit provides comprehensive in-car communication

Clutch Rollers, Set of 4, for TAPP Primary SIZE:+3 mm All programs have the followingDESCRIPTION All EVP. MOde Spec TAPP primaries are calibrated with +2mm rollers. Bigger rollers make the low end "quicker RPM's" but shift out quicker and lower the full shift RPM. This has to do with the angle of the arms combined with the weight difference of the rollers. +1mm Rollers Outside Diameter 16. 5 mm with a weight of 12. 5 grams each. +2mm Rollers Outside Diameter 17. 5 mm with a weight of 15. 3 grams each. +3mm Rollers Outside Diameter 18.