American Motorcycle Dealer AMD 180 July 2014 | Page 47

Zipper’s high compression pistons ZIPPER’S is making its high compression pistons for use in 110ci Twin Cam engines available in a choice of dome heights. Codesigned by Zipper’s/Wiseco, the forged pistons can be purchased with a 10.9:1 or 12.7:1 compression ratio. The new pistons are said to have a lightweight design that results in a 555g assembly and which includes additional clearance for high lifts and/or oversize valves. Additional features of the pistons include the use of an ArmorGlide bonded skirt lubricant allowing a tighter fit and ArmorPlating applied to the piston crown, ring grooves and pin bore. Zipper’s say the piston, also available in +.007in, +.014in and +.022in over-sizes, have a dome design that more closely conforms to the CVO 110 chamber shape for a tighter quench area, improving combustion and power. PARTS AND ACCESSORIES ZIPPER’S PERFORMANCE PRODUCTS Elkridge, Maryland, USA Tel: [phone] [email protected] www.zippersperformance.com ‘Wrath’ exhaust headers WRATH is a new three-step, 2-into-1 header system from Rush Racing. The header starts with a diameter of 1.75in at the cylinder head before opening out to 1.875in and then 2in before joining a 2.5in collector for the S model or 3in collector for the SS model. Rush describe the header system as being suitable for use with big motor builds, engines with 10.5:1 compression, and bikes with forced air induction, with the SS model designed for heavily modified engine builds. Wrath is designed to accept up to a 3in diameter baffle with Rush's 4in mufflers for maximum flow and performance, and is offered in a choice of chrome or black finishes with a heat shield that wraps over half of the way around its equal length head pipes. All of Rush's full systems are ceramic coated inside and outside and said to provide a cooler ride and better performance. RUSH RACING PRODUCTS Merrillville, Indiana, USA Tel: [phone] [email protected] www.rushracingproducts.com