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S&S Cycle 107 in. big bore kits are easy to install and require no machining or re-balancing. These are the largest bores that can be fit in your stock engine case. This is the largest bore that can be fit in a stock engine case. Stock engine height is maintained so there are no manifold or frame fitment issues. Using an 11-fin design, the pre-finished cylinders closely resemble the OEM shape and are ready to install. Take your stock engine case as big as it'll go with S&S Cycle 107 in. big bore kits! Product features include: * CP pistons feature a 3cc pop-up dome for slightly higher compression * Cylinders feature an increased fin area for better heat dissipation * Centrifugal cast gray liner features 40,000 psi tensile strength for superior wear and performance
Not Yet Reviewed
$1,175.36
On Sale
Summit Racing™ SBC crate engine startup kits have assembled all of the gaskets, fluids, and extra parts typically needed to set up a new engine.The small block Chevy kits will save you time and money. These kits include: * Oil filter * Oil dipstick * Intake gasket set * Water pump gasket set * Water neck gasket * RTV silicone * Exhaust manifold gasket set * Oil filter adapter * Break-in motor oil (five quarts) * Dex-Cool coolant (two gallons)
Not Yet Reviewed
$262.10
$258.43
The S&S Cycle 124 in. big bore/stroker Hot Set-Up kits transform a stock Harley-Davidson® engine into a 124 in. monster. It includes: 4 1/8 in. bore pistons; big bore cylinders finished in wrinkle black powdercoat; a dynamically balanced 4 5/8 in. stroke 3-piece flywheel assembly complete with heavy-duty connecting rods and integral mainshafts; 640 gear drive Easy Start camshafts; chromoly steel adjustable pushrods; premium tappets; and Super Stock 91cc cylinder heads. When installed, the kits yield a 124 in. engine with a compression ratio of 11:1. Although the engine is .960 in. taller than stock, there are no frame clearance problems—and a stock EFI throttle body will fit, because the manifold mounting surfaces of the heads have been specially machined to fit a stock length manifold. If you ride a 2006 HD Dyna model, or a balanced or non-balanced Big Twin from 2007-17, these top-end engine rebuild kits are for you. Note: No fuel or ignition system is included. However, for the best results, a larger EFI throttle body, performance intake, and performance exhaust are recommended. The EFI system must be recalibrated. Although not mandatory, S&S recommends adding an oil cooler to bikes ridden in warmer climates. S&S does not recommend compression ratios higher than 10:1 for Tri Glide or other 3-wheel models (including conversions) due to extra loads caused by the lugging nature of these bikes. Detonation and subsequent engine damage may result.
Not Yet Reviewed
$5,636.66
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$6,128.06
S&S Cycle offers 132 in. power packages with chain drive cam for a variety of Harley-Davidson© street bikes from 2017 and up. These packages are the ideal combination of performance and savings designed to transform your engine from mild to wild. They combine S&S's biggest big bore cylinders with matched 550 cam/cam-plate/oil pump and everything else a high performance cam chest needs to make big, reliable horsepower. Additional details: * Available with 132 in. Big Bore pistons/cylinders * 550 lift cam for the perfect combination of horsepower and torque * Works with stock crankcases * Powdercoat finish matched to factory * MLS (multi-layered steel) head gaskets * Includes tappets, tappet cuffs, and high lift springs * Includes 132 cam cover badge * 132 Power Pack: Stock heads, 550 cam, stealth AC, stock throttle body, S&S manifold, power tune duals, MK45 muffler * Recommended for closed course competition racing
Not Yet Reviewed
$3,359.95
In most cases, it just isn't worth it to try to rebuild your old, cracked, worn-out cylinder heads or to bore the stock cylinders again. S&S Cycle 74 In. Shovelhead top end kits provide everything you need to replace the top end. Pistons are pre-fit to the cylinders, so there is no machine work done and very little down time. Compression pistons come complete with rings and wrist pins, manifold clamps seals, all required hardware, and gaskets. You can't go wrong with these kits. When it comes to reliability and durability, you need quality parts. Fit and quality mean life for your Harley®!
Not Yet Reviewed
$2,816.06
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