Power Kits
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S&S 883 → 1200 cc Conversion Kit
Boost any 883cc Harley-Davidson Sportster to 1200cc without hassle. No machine ... more
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S&S Sidewinder Kits for 89” Evolution Sportster
200 kph with an Evo-Sportster? No problem with this power package by S&S. Our ... more
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S&S Sidewinder Kits for Evolution Big Twin
Nothing beats cubic inches! The S&S Sidewinder kits for Evolution Big Twin ... more
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S&S 3-5/8” Big Bore Kits for Shovelhead
For all Shovelhead Big Twins. More displacement with stock-like reliability ... more
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S&S 3-5/8” Big Bore Kits for Evolution Big Twin
For all Evolution Big Twins. More displacement with stock-like reliability that ... more
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S&S Hot Set-up Kit for Evolution Big Twin
The economical route to a large displacement motor. The 96cui. (= 1560 ccm) Hot ... more
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Screamin’ Eagle Big Bore Cylinders for Twin Cam 88
Bigger sometimes is better and the formula to prove this statement is: more ... more
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S&S Stroker Flywheel Kits
The legendary S&S stroker flywheel kits - still unsurpassed in quality and ... more
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Truett & Osborn Stroker Flywheels for 45” Flatheads
There is NO Substitute for more cubic inches! Boost your little Flatty up to 54 ... more
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S&S Compression Release
Large displacement high compression engines can sometimes be difficult to ... more
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