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Transmission / Drive Line

Looking to upgrade your transmission or drive line? Zipper’s Performance Products knows a high performance hot rod often requires highly resilient transmission and drive line components, clutches or even a chain conversion. We’ve done the research for you and offer many drive line performance products. Zipper’s extremely popular Chain Conversion Kits take the hassle out of converting your late model belt drive. Looking for clutch that’s easier on your hand? Bandit® and VPC clutches can handle big engine upgrades while easing the ache in your hands.
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    As low as: $459.95

    This trap door can be used as a heavy duty stock replacement or as a rigid backbone for drag racing and high output 4 speed alternator-equipped Sportsters®. Includes a heavy-duty, double-row mainshaft bearing for extra strength and stability for the clutch and shafts. The double-row bearing greatly reduces the clutch shell rocking that occurs under power - which leads to damaged alternator rotor magnets and stators when contact between the two is made. It is a direct bolt-on replacement and includes mounting hardware and countershaft bearing. Made in USA.