{"product_id":"zippers-performance-twin-cam-muscle-107-kits-harley-models-07-17-copy","title":"ZIPPERS PERFORMANCE TWIN CAM MUSCLE 117\" KITS HARLEY MODELS 07-17","description":"\u003cp\u003eZIPPERS PERFORMANCE TWIN CAM MUSCLE 117\" KITS HARLEY MODELS 07-17\u003c\/p\u003e\n\u003cp\u003eEXCHANGE KITS - CORES REQUIRED \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eZipper’s Muscle 117” Kit for Twin Cam® 96\/103” engines increases displacement with new 4-1\/8” bore cylinders while retaining the factory 4-3\/8” stroke.\u003c\/strong\u003e\u003cspan\u003e New cylinders are stress-relived before being fitted with 10.6:1 forged pistons using the latest Sunnen equipment, while your heads receive Zipper’s high-breathing Stage III treatment with CNC porting, new guides, oversize valves and performance springs. Our Red Shift 577 cams are perfectly matched with the heads and piston to provide big torque \u0026amp; HP across the entire RPM range. Red Shift Dual-Piston cam tensioners are included with Pro-Taper pushrods for a stable valve train and EZ-Adjust covers, with all the gaskets needed for assembly. Case boring required for 4-1\/8” cylinders, Timken® bearing conversion and cam chest\/oil system upgrade recommended. \u003c\/span\u003e\u003cstrong\u003eAmazing increase in Power and Torque!\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eThis Kit uses your factory head cores sent in for modification. An exchange may be possible once your cores are cleaned, inspected and qualified for exchange.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"ZIPPERS","offers":[{"title":"Default Title","offer_id":55573671641256,"sku":null,"price":7199.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/8273\/6552\/files\/ZIP_SPORT_KIT_d4817585-76ce-4281-b596-205d23ea7030.jpg?v=1780288289","url":"https:\/\/speedguyscanada.com\/products\/zippers-performance-twin-cam-muscle-107-kits-harley-models-07-17-copy","provider":"THE SPEED GUYS CANADA ","version":"1.0","type":"link"}