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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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  1. Be the first to review this product

    As low as: $53.95

    American-Made rear wheel sprockets for 1973-up wheels. Choose from light weight 7075-T6 aircraft quality hardened aluminum alloy or high quality carbon steel. Manufactured in full width for size 530 chain, for maximum strength. Available in dished (.245" offset) or flat for standard Harley® 3.250" bolt circle 5-bolt pattern. 1994-2002 tube-frame Buell 5-bolt pattern available in flat only. Note: if replacing a sprocket provided in a Zipper's chain conversion kit, measure the center hole size of your existing sprocket and order the same center hole replacement.
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    As low as: $37.00

    One of the less desirable byproducts of increased power is the need for a clutch spring upgrade, and the additional lever effort it requires. By adding the Variable Pressure Clutch (VPC) devise, clutch plate holding pressure is reduced at lower RPM’s, and increased as RPM rises, reducing the chance of clutch slippage as power builds. the VPC system reduces initial pressure and uses weights and centrifugal force to increase pressure as RPM builds. Clutch lever effort is reduced up to 50% at idle and low RPM, resulting in less hand fatigue, smoother engagement and easy neutral location.
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    As low as: $23.99

    These sprockets are offset towards the engine case in a stock application, and use a flat rear sprocket. Direct bolt-on for ‘91-’94 models; ‘95-'05 models require a seal and spacer kit # 850-940.
  4. As low as: $0.00

    We’ve taken the hassle of converting your late model belt driven H-D® to chain drive. Whether you’re interested in a different final drive ratio, added driveline strength or more clearance for a wider tire, these kits will make your life easier. Kits are available with durable, high wearing RK Pro O-Ring chains (best for street use) or RK's brutally strong, non-o-ring DR (Drag Race) chain.
  5. As low as: $1,529.00

    The ‘Zip-Rack’ is a fully assembled shaft and gear set that has been treated with our famous back-cut service. We start with a full set of new Andrews gears and shafts. The engagement dogs are carefully machined to the proper rake and depth by Zipper’s for positive engagement, eliminating missed shifts at high RPM. The gears and shafts are assembled with new thrust washers and bearings, then installed on a billet door. Sportster® Note: 817-180S is designed for street and part-time racing use; for full-race cut, order # 817-180R (additional charge).
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