HARLEY-DAVIDSON Engine Blocks & Accessories Engines & Components - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

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S&S Cycle 4 in. Sidewinder Big Bore Kits

Inspired by S&S Pro Stock drag race engines, S&S Cycle 4 in. Sidewinder big bore kits utilize a ductile cast iron liner wrapped in cast aluminum for optimum thermal conductivity and performance. These bolt-in kits do not require machining, re-balancing, or engine removal, and include just about everything you'll need to complete the installation. S&S Cycle 4 in. Sidewinder kits offer the biggest cylinder bore that can be installed in a stock crankcase without machining! Features: * Low-friction ductile cast iron liner * 10.5:1 compression * Bolts in with no machining, balancing, or splitting the crankcases * 88 in. engines are boosted to 100 in. * 96 in. and 103 in. engines are boosted to 110 in. * Complete kits include cylinders, pistons, gaskets, and instructions * Wrinkle black and silver cylinders that match stock finish

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$1,395.86

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S&S Cycle 100 in. Power Packages

S&S Cycle 100 in. power packages are the ideal combination of performance and savings to transform your Harley® without breaking the bank. Bump that early Twin Cam from 88 cu. in. to 100 cu. in., while adding matched cams/cam plate/oil pump and everything else needed to reliably make big power. Optimize the performance of your bike by using one of these economical 100 cu. in. power packages from S&S Cycle. Features, benefits, and specifications: * Upgrade TC88 to 100 cu. in. * Engineered package to deliver the best bolt in performance * 4 in. bore bolt-on cylinder and piston kit * Wrinkle black finish * 585 Easy Start chain drive cams * TC3 oil pump and cam plate * Cam chain tensioners * Quickee adjustable pushrods with tubes * Precision tappets

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$3,011.36

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$3,121.16

HardDrive Cylinders

HardDrive cylinders are offered as a stock replacement as well as increased displacement (depends upon application) for applications as early as Panhead all the way up to Evolution and Sportster. All cylinders must be finish honed and matched to pistons (sold separately).

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$221.36

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S&S Cycle 110 in. Power Packages

S&S Cycle 110 in. Power Packages are the ideal combination of performance and savings to transform your Twin Cam HD without breaking the bank. Bump the early Twin Cam from late 96ci or 103ci to 110ci, as well as add matched cams/cam plate/oil pump and everything else a high performance cam chest needs to reliably make big power. Features: * 4 in. bore bolt on cylinder and piston kit * 10.5:1 compression * Wrinkle black finish * S&S 585 Easy Start cams in either gear or chain version * TC3 oil pump * TC3 cam plate * S&S cam chain tensioners or outer cam drive gears * Quickee adjustable pushrods with tubes * S&S precision tappets * Low-friction ductile cast iron liner * Bolts in with no machining, balancing, or splitting the crankcases * Cylinders fit to pistons--no machining required * All parts required to upgrade to gear drive cam or hydraulic tensioners in one easy to order part number

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$3,011.36

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S&S Cycle MK-Series Performance Crankcases

S&S Cycle offers MK-Series Performance crankcases for a variety of Harley-Davidson Touring and Softail street bikes from 2017 and up. These assembly replacements enable you to build massive power easily and reliably, particularly with M8 engines, and stock cases can't provide the necessary quality base. MK-Series crankcases are designed to allow for larger bores, scrape more oil than stock, have a larger volume sump, and fit in a stock frame without modification. Order the model recommended for your application.

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$2,849.95