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M8 Stage 3 & 4 Essentials

M8 Stage 3 & 4 Essentials

Go big or go home. Our Harley-Davidson Stage 3 Upgrade Kits are designed for riders demanding a massive increase in displacement and power. By increasing the cylinder bore and adding high-compression pistons, a Stage 3 kit transforms your engine into a high-performance powerhouse without sacrificing reliability.

12 products

VTP M8 Intake Manifolds 55-60 mm, 65mm, (stock style & mounting)

VTP M8 Intake Manifolds 55-60 mm, 65mm, (stock style & mounting)

$349

#534-821 ZIPPER'S 4.085 M8 +.010 121

#534-821 ZIPPER'S 4.085 M8 +.010 121" +3.7CC PSKT

$619

HPI 70MM M8® Center-Flo 2.0 Throttle Body

HPI 70MM M8® Center-Flo 2.0 Throttle Body

$880

S&S Roller Rocker Arms - 1.640 Rocker Ratio - M8

S&S Roller Rocker Arms - 1.640 Rocker Ratio - M8

$675

Save $44.96 S&S 132

S&S 132" Big Bore Cylinder Kit - Black/Highlighted Fins - M8

Regular price $1,544.95 Sale price $1,499.99

Save $45.95 S&S 129

S&S 129" Big Bore Cylinder Kit - -107 M8 4.3/8 stroke

Regular price $1,544.95 Sale price $1,499

HPI Milwaukee 8® Throttle Bodies

HPI Milwaukee 8® Throttle Bodies

$770

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