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...

Hello, Everyone! Just wanted to let you know... Zipper's Performance Products has released two new products: RedShift Dual Piston Cam Chain Tensioners and Red Shift 525 Performance Cams. Both of these products are for 2007-Up Twin Cams - Sorry, not XR1200's. Some of you have more than 1 bike...