A new line of valve and spring kits available from Twin Power/Biker's Choice includes replacement valve kits and complete engine kits for a wide range of Harley-Davidson models and Buell XB9s.
Each valve kit includes four stock size valves while the engine kits include four valves, a complete O.E.M. style replacement spring kit, steel retainers, keepers and valve guide seals, where applicable.
"From Knuckleheads to the latest Twin Cam models, we are committed to providing you with everything you need in one kit," says James Simonelli, Brand Manager for Twin Power. "If you need to do a complete cylinder head overhaul, we have packaged everything you need under one part number, which makes it easy to order what you need."
The kits comprise high quality 'Black Diamond' stainless steel valves that are impregnated using a special German process to a depth of .002, with a surface build-up of .0002. This process is said to improve wear properties, reduce friction and provide resistance to corrosion. The valves are lightweight, strong, one-piece forgings with precision-machined profiles that have been designed and tested for their excellent flow characteristics.
The spring kits are O.E.M. style replacements that have been engineered to deliver stock pressures and work with stock cam profiles. Made to original O.E.M. specifications using premium design, materials and manufacturing techniques, they are wound from super-clean chrome silicon valve spring wire that has been heat-treated and shot-peened.
The retainers, keepers and bases have been designed to provide the maximum mechanical strength possible, and, where applicable, stock replacement 'Beehive' style springs are supplied.
The valve guide seal kits are red 100% Viton optimum fitment valve stem seals that were designed to allow for maximum lift and maximum life. They are resistant to high temperatures, petroleum products and corrosive gases. Late Shovel kits include a stock-type K-Line seal, while the Knucklehead and Ironhead Sportster kits do not include seals.
BIKER’S CHOICE
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