{"product_id":"wiseco-3-3-4-big-bore-piston-kits-for-evolution-big-twin-engine-2","title":"Wiseco 3 3\/4\" Big Bore Piston Kits for Evolution Big Twin – Engine","description":"\u003cp\u003eThese piston kits will convert your 1340 Evolution Big Twin motor to a 93.4CI (1530CC) Big Bore with stock stroke. Must be used in combination with a set of 3.740\" bore cylinders. No cylinder head modification or re-balancing of the crankshaft required, just have your crankcase bored to the spigot size of these big bore cylinders. Compression ratio is 9.5:1 when using the stock Harley cylinder heads. Kit includes a pair of Wiseco forged pistons, Hastings piston rings, wrist pins and piston pin clips. Top end gasket kit for your year motorcycle must be ordered separately.\u003cstrong\u003e\u003cbr\u003e \u003cbr\u003e Note: \u003c\/strong\u003eThese kits are designed for use with 1984-1989 and 1996-1999 stock crankcases or any S\u0026amp;S, Delkron or S.T.D. crankcase. Due to a weaker construction of the stock 1990-1995 crankcases the use of these is not recommended they should be replaced with S\u0026amp;S, Delkron or S.T.D. crankcases.\u003c\/p\u003e\n\u003cp\u003eTop end gasket kits, Fits 3.740\" Big Bore 1992 thru 1999 Evolution Big Twin\u003c\/p\u003e\n\u003cp\u003e3.74\" BigBore Top end gasket Kit BT92-99\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Pistons \u0026amp; Piston Rings\u003c\/li\u003e\u003c\/ul\u003e","brand":"Wiseco","offers":[{"title":"Default Title","offer_id":62566845153610,"sku":"700030","price":823.0,"currency_code":"PLN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0016\/9546\/files\/standard-rgba_fca2c98f-5e41-45f6-9b60-651d58fb2bda.png?v=1782768854","url":"https:\/\/partsdenmark.pl\/products\/wiseco-3-3-4-big-bore-piston-kits-for-evolution-big-twin-engine-2","provider":"Parts Denmark","version":"1.0","type":"link"}