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Zipper's Performance Representative
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Here at Zipper's, we are all about Sportsters®.
We cut our teeth and built our reputation racing Sportsters®! Between 1985 and 1995, Zipper's drag racing yielded 5 National Drag Racing Championships and set over 60 National and World Records. Building for both power and reliability, this strategy was central to the legendary record of wins. Today, Zipper's Performance Products uses the performance knowledge gained by racing to create street-to-strip performance strategies for riders of all kinds.

Red Shift® Performance Cams
Zipper's Performance has Red Shift® performance cam grinds for Evolution®, XR1200®, Buell® XB® and even Ironhead® Sportster® models. No other manufacturer has more performance cams for Sportsters®! Red Shift® Cams are engineered and manufactured by Zipper's here in the USA with the most advanced engineering design processes built into every cam. Get the power and performance you want without sacrificing your engine and valve train.

We Can Configure Your Sportster® Cams for Special Applications Such as 2 Front Heads (XR® Style) Contact Us to Learn More!

Click to View the Red Shift® Cam Selection Matrix and Available Grinds!

Click Here to Learn More about Red Shift® Cams for Sportster Models!


Transmission Upgrades for Sportster® Models

At Zipper's Performance, we know a high performance hot rod often requires highly resilient transmission components. Get a rock-solid foundation for your high performance build with a Zipper's Billet Trap door. Strengthen your Sportster® transmission with Trap Door options for 4-speed and 5-speed XL's. Zipper's also stocks the full line of Andrews® gears and shafts for Sportsters®.

Zipper's Billet Trap Door for 5 Speed Sportster® Models

Zipper's Billet Trap Door for 4 Speed EV Sportster® Models


Chain Conversion Kits for Sportster® Models
We've taken the hassle of converting your late model belt driven Sportster® to chain drive, whether for greater durability, altered final drive ratio, clearance for a wider tire, cool old school looks, or all of the above! Front sprockets are steel, rear are made from extremely tough hardened 7075-T6 aircraft quality aluminum. Choose between high-wearing RK Pro O-Ring chain or RK's brutally strong, non-o-ring DR (Drag Race) chain.

Zipper's Chain Conversion Kits for Sportster® Models


Fuel and Ignition Upgrades for Sportster® Models
Zipper's racing heritage and constant R&D has lead to our guru status for performance fuel and ignition upgrades. For EFI Sportsters® and XR's®, our industry-leading ThunderMax® with AutoTune EFI system boasts simple installation, easy set-up, and does not require a dyno for a great tune. For carbureted Sportsters®, we offer fuel systems from ThunderJet®, S&S® and Mikuni® with our own proprietary line of MAXFlow air cleaners. Finally, don't forget fully programmable ignition systems in single and dual-fire.

ThunderMax® with AutoTune EFI System for 2007-2013 Sportster Models

Ignition and Electrical Systems for Harley-Davidson® Models

Fuel Systems for Carbureted Harley-Davidson® Models
 
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