{"product_id":"zippers-performance-big-bore-kits-harley-gen-2-m8-models","title":"ZIPPERS PERFORMANCE BIG BORE KITS HARLEY GEN 2 M8 MODELS","description":"\u003cp\u003eZIPPERS PERFORMANCE BIG BORE KITS HARLEY GEN 2 M8 MODELS \u003c\/p\u003e\n\u003cp\u003eSELECT IN OPTIONS \u003c\/p\u003e\n\u003cp\u003eIncreasing the size of a Milwaukee-Eight® engine is easy with Zipper’s Big Bore Cylinder Kits.  These Big Bore kits are designed for the new Gen 2 M8 engines, which have oval port heads and center cooling.\u003c\/p\u003e\n\u003cp\u003eThe Milwaukee-Eight® engines design is made for displacement increases and Zippers offers cylinder kits for Factory stock 4-valve head, SE heads and many Custom High Flow Heads to provide huge torque and horsepower gains.\u003c\/p\u003e\n\u003cp\u003eEach of this specific bore sizes are designed to fit on the factory engine base without case boring just like like-stock installation.\u003c\/p\u003e\n\u003cp\u003e4.250- 4.280 Bores\u003c\/p\u003e\n\u003cp\u003eZipper’s offers new alloy castings with bore sizes from 4.250 to 4.280\u003c\/p\u003e\n\u003cp\u003eThese castings are designed with additional aluminum for added strength vs a O.E. casting with a larger bore liner with the following features:\u003cbr\u003e• Cast Aluminum has 1 lb. additional material for Strength and Reliability\u003cbr\u003e• Stress Relieved Iron Liners\u003cbr\u003e• Precision Sized on Sunnen SV-30 by Zipper’s skilled craftsman\u003cbr\u003e• Special Ring Packs for Advanced Cylinder Sealing\u003cbr\u003e• Gasket Surface Finish Improved for Superior Seal using Cometic MLS Gaskets\u003cbr\u003e• Zipper’s Forged “Spec Built” Pistons manufactured by CP\u003c\/p\u003e\n\u003cp\u003eWe have many dome configurations to choose from so you can target various compression ratios. Contact Zipper’s support if you have a special requirement.\u003c\/p\u003e\n\u003cp\u003e4.250 x 4.500 stroke = 128ci\u003c\/p\u003e\n\u003cp\u003eKits include precision fitted cylinders with tight tolerances, 2618 forged pistons with advanced ring packs, pins \u0026amp; clips, head and base gaskets and new head bolts. The rings custom sized to each cylinder.\u003c\/p\u003e","brand":"ZIPPERS","offers":[{"title":"128\" DISHED PISTONS (STOCK HEADS 117-128)","offer_id":42498691956823,"sku":null,"price":2799.95,"currency_code":"CAD","in_stock":true},{"title":"128\" DISHED PISTONS (MODIFIED HEADS 117-128)","offer_id":42498691989591,"sku":null,"price":2799.95,"currency_code":"CAD","in_stock":true},{"title":"128\" FLAT TOP PISTONS ( MODIFIED HEADS 117-128)","offer_id":42498692022359,"sku":null,"price":2799.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/2276\/2583\/files\/zippers-engine-black-zippers-performance-big-bore-kits-124-harley-twin-cams-99-17-26486344843351.jpg?v=1793599448","url":"https:\/\/valleyspeed.net\/products\/zippers-performance-big-bore-kits-harley-gen-2-m8-models","provider":"The Speed Shop Canada","version":"1.0","type":"link"}