{"product_id":"s-s-cycle-91-9001-88-sidewinder-3-5-8-big-bore-cylinder-kit-for-1979-84-big-twins-gloss-black-finish","title":"91-9001 | 88\" Sidewinder 3-5\/8\" Big Bore Cylinder Kit for 1979-'84 Big Twins - Gloss Black Finish","description":"\u003ch1\u003eS\u0026amp;S Cycle 91-9001\u003c\/h1\u003e Installing this 3-5\/8\" big bore kit will increase the displacement of stock 80\" HD\u003csup\u003e®\u003c\/sup\u003e shovelhead engines to 88\" using the stock 4-1\/4\" flywheels. This may also be used to build an 88\" engine in 74\" shovelheads if a 4-1\/4\" stroke flywheel assemble is also installed. The kit includes S\u0026amp;S 3-5\/8\" bore cylinders, 3-5\/8\" bore forged pistons with rings and wristpins, S\u0026amp;S stainless steel head bolts, base nuts, head gaskets, base gaskets, exhcaust gaskets, and instructions. Compression is 7.5:1. The cylinders are stock length so stock length pushrods and manifold may be used. \u003ca href=\"https:\/\/www.sscycle.com\/content\/document_center\/Instruction_Sheets\/510-0036-gasketlabel.pdf\" target=\"_blank\" alt=\"Download Instructions\"\u003eInstall Instructions Download\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/www.sscycle.com\/content\/document_center\/Instruction_Sheets\/51-1169.pdf\" target=\"_blank\" alt=\"Download Additional Instructions\"\u003eAdditional Install Instructions\u003c\/a\u003e\u003ch3\u003eFITMENT DISCLAIMER\u003c\/h3\u003e\n\u003cp\u003eFitment information is provided as a general reference only and is not guaranteed for any motorcycle, whether stock or modified. Compatibility may vary by year, model, and individual configuration.\u003c\/p\u003e\n\n\u003cp\u003eCustomers are responsible for verifying fitment prior to purchase. House of Harley-Davidson assumes no liability for purchases made based on incorrect or unverified fitment information.\u003c\/p\u003e\n\n\u003cp\u003ePlease TEXT 414-282-2211 with any questions before ordering, or use the chat below.\u003c\/p\u003e","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":53260296585523,"sku":"SS+91-9001","price":1995.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0720\/6764\/5747\/files\/ss-91-9001-ss-cycle-91-9001-88-sidewinder-3-5-8-big-bore-cylinder-kit-for-1979-84-big-twins-gloss-black-finish-2.png?v=1776705091","url":"https:\/\/houseofharley.com\/products\/s-s-cycle-91-9001-88-sidewinder-3-5-8-big-bore-cylinder-kit-for-1979-84-big-twins-gloss-black-finish","provider":"House of Harley®","version":"1.0","type":"link"}