Parts

S&S 103″ Replacement Piston Kit 3.875″ Bore For Harley Twin Cam 2007-2017

This cylinder and piston kit for S&S Cycle 106″ stroker kits may be used to replace the stock cylinders, when building a 106″ stroker engine.

Don’t trust your rebuilt heads with a set of fatigued OEM bolts, upgrade your hardware with a fresh set of 12 Point Head Bolts from S&S Cycle!

S&S 3.5″ Bore Cylinder And Piston Kit

Piston ring set for 4.250″ bore pistons made from some of the highest quality components for longevity and made here in the USA.

S&S® Super Stock® cylinder heads cater to 2006-2016 engines, enhancing performance for stock displacement units and excelling with bigger stroker or big bore engines up to 110″. With an 89cc combustion chamber, it strikes a balance between higher compression ratios and manageability, making it ideal for touring bikes and heavy vehicles. It features large 2.000″ intake and 1.605″ exhaust valves for robust low and midrange response, complemented by intake ports flowing 264 cfm. The heads support camshaft installations up to .650″ lift and are compatible with stock rocker boxes, exhaust, and intake manifolds, all while boasting a wrinkle black powder coat finish for aesthetic synergy with stock engine components.

S&S Cycle Breather Gear For Harley EVO

S&S Cycle Breather Gear Shim Set

S&S Cycle Cam Chain Tensioner For Harley M8

Elevate your motorcycle’s performance effortlessly with these bolt-in heads, designed for compatibility with stock flat top pistons. No need for expert engineering skills—simply install to enhance power. Ideal for use with stock components, their potential is fully unleashed with an optimized exhaust, air cleaner, and cam setup, courtesy of included high-lift springs. Adjustable pushrods complement the setup well, though aren’t mandatory. Remember, gaskets are essential for a complete installation.

If you are doing an engine rebuild and adding displacement or compression, that tired stock hard ware can become a liability. S&S cylinder studs are made from 4140 Chrome-moly steel that is oil quenched and tempered to achieve 180,000 psi tensile strength. S&S studs utilize rounded thread roots that resist fatigue more efficiently that stock flat threads.

S&S Cycle Engine Cases 92-99 Stock Evo

S&S Cycle Flat-Topped Piston Kit For Harley 80″ Stock / S&S Motors

Big lift cams can open up the high rpm potential of the M8 powerplant, but they can also cause their own issues due to the extra stresses and stock valvetrain geometry. Excessive valve thrust and valvetrain wear drove S&S Cycle engineers to design stronger, more durable components that will help you get the most out of your M8. S&S Cycle Forged Roller Rocker Arms for M8 models are stronger, more durable and easier on the rest of your valvetrain, and are essential for increasing the longevity of your valvetrain components on cams with greater than .550″ lift.

S&S Head Bolt Kit
These Head Bolts are reusable and increases strength by 14% over stock.

S&S Cycle Headbolt Kit For Harley

The S&S Super Stock o-ring style cylinder heads maintain a classic stock appearance while significantly improving airflow compared to the original stock heads.

S&S Cycle High Output Super Stock Cylinder Head Kit

For use in stock Twin Cam engines. Bodies machined from 6061 aluminum. Larger diameter piston and tighter tolerance fit of the shoe in the body provide improved stability, no more rocking shoes. Chain oiling feature provides oil to the chain rails right before crossing the tensioner for increased lubrication and greater cooling.

S&S Cycle Hydraulic Lifter Insert For Harley FL / FX