Bottom End

Made of high-strength forged steel and designed for stock and high-performance custom applicationsSpecial keyed 6° large diameter tapered sprocket shaft that provides more contact area for increased strengthStandard S&S tapered crankpin and pinion shaft...

The exact same assembly used in S&S SH80 Alternator enginesCan be used to overhaul an S&S engine or to build a custom engine using similar crankcases and pistonsFeatures 4-1/4" stroke, 8-1/2" diameter flywheels, and 7.440" connecting rodsMade in the U.S...

Made of high-strength forged steel and designed for stock and high-performance custom applicationsSpecial keyed 6° large diameter tapered sprocket shaft that provides more contact area for increased strengthStandard S&S tapered crankpin and pinion shaft...

Stock Bore Stroker Flywheel Kit 84"Upgrades 74" and 80" Shovelhead engines to 84" displacement at approximately 8.4:1 or 7.3:1 compression (depending on pistons used)Includes a dynamically balanced 41/2?" stroke flywheel assembly complete with S&S...

Made of high-strength forged steel and designed for stock and high-performance custom applicationsSpecial keyed 6?? large diameter tapered sprocket shaft that provides more contact area for increased strengthStandard S&S tapered crankpin and pinion shaft...

Cam Chain - T106Er - 110 Links - Gas Gas | Husqvarna | Ktm 31.6356 Gas Gas -- MC 250F -- (2022, 2021, 2023); Gas Gas -- EC 250F -- (2021, 2023, 2022); Gas Gas -- MC 350F -- (2023); Gas Gas -- EC 350F -- (2023, 2021, 2022); Gas Gas -- EX 250F -- (2022,...

Sprocket spacer for S&S Super Stock® and Special Application Crankcases

Cam Chain - 82Rh2010 - 128 Links - Gas Gas | Kawasaki | Suzuki 31.3403 Suzuki -- DR-Z 400 S -- (2000, 2005, 2009, 2002, 2007, 2008, 2001, 2003, 2006, 2004, 2014, 2015, 2016, 2010, 2011, 2020, 2017, 2019, 2021, 2012, 2013, 2022, 2018, 2023); Suzuki --...

New-style breather is not dependent on the rotation of the crankshaft to make it open and close. Instead, reeds open when pressure in the crankcase becomes greater than pressure in the cam chest, and close when pressure in the cam chest is equal to or...

Cam Chain - 82Rh2015 - 102 Links - Honda 31.1384 Honda -- XR250R -- (1993, 1991, 1995, 1994, 1988, 1990, 1987, 1989, 1992, 1984, 1986, 1985)

Cast from A356 T-6 heat-treated aluminum alloyMachined to accept an oil filter assembly that mounts on the front of stock motor casesAll races are line-honed and breather cavity is precision-machined to optimize breather timing for maximum oil...

Cast from A356 T-6 heat-treated aluminum alloyInclude crankcase bolts, washers and nuts, cylinder mounting studs, timing hole plug, magnetic drain plug, assorted breather and oil line fittings, top end oil screen spring and plug, sprocket shaft Timken®...