Home > Parts > Racing Parts - Honda GX and Chinese OHV > Pistons, Rings, & Wristpins > Racing Pistons > GX390, 420s, & 460s.
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88mm (GX390) Cast Flat-Tops 88mm (GX390) Forged Pistons 90mm (420cc) Pistons
92mm (460cc) Pistons Stroker Pistons Closeouts & Specials
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Piston, 90mm Dished for 420cc OHV Predators Piston, 90mm Dished for 420cc OHV Predators

90mm Aftermarket Dished Piston 420cc Predators. Will fit most 390 style engines.

Our Price: $15.69
Piston, 90mm Flat Top for 420cc Hemi Predators, New Take Offs Piston, 90mm Flat Top for 420cc Hemi Predators, New Take Offs

NEW TAKE OFFS 90mm Aftermarket Flat-top Piston 420cc Predators and GX390s with 90mm bore

Our Price: $16.99
Piston, 92mm Dished for 440 & 460cc Predators, New Take Offs Piston, 92mm Dished for 440 & 460cc Predators, New Take Offs

92mm Aftermarket Dished Piston for 440 & 460cc OHV GX390 style engines.

Our Price: $16.99
Piston, GX390 Flat Top, Aftermarket, T3 Style (Thin Ring) Piston, GX390 Flat Top, Aftermarket, T3 Style (Thin Ring)

88mm Aftermarket Flat-top Piston for stock bore GX390s.

Our Price: $24.99
Piston, 92mm for 460s & GX390 Type Engines, Cast Flat Top Piston, 92mm for 460s & GX390 Type Engines, Cast Flat Top

92mm Diameter Cast Piston. Up to 460cc when used 69mm Stroker cranks.

Our Price: $25.99
Piston, 90mm Flat Top for 420 OHV & GX390 Type Engines Piston, 90mm Flat Top for 420 OHV & GX390 Type Engines

90mm Aftermarket Flat-top Piston for big bore GX390s. Fits stock bore on 420 Predators (non-hemi).

Our Price: $29.99
Piston, 90mm Flat Top for 420cc Hemi Predators Piston, 90mm Flat Top for 420cc Hemi Predators

90mm Aftermarket Flat-top Piston 420cc Predators and GX390s with 90mm bore

Our Price: $29.99
Piston, GX390 Flat Top, Aftermarket, Cut -.060 for 4.510 Rod Piston, GX390 Flat Top, Aftermarket, Cut -.060 for 4.510 Rod

88mm Aftermarket Flat-top Piston for bore GX390s only. Cut.060 for use with 4.510" Rod.

Our Price: $43.39
Piston, 90mm Flat Top, Aftermarket, Cut -.060 for 4.510 Rod Piston, 90mm Flat Top, Aftermarket, Cut -.060 for 4.510 Rod

90mm Aftermarket Flat-top Piston for bore GX390s only. Cut.060 for use with 4.510" Rod.

Our Price: $43.39
Piston, GX390 Flat Top, Aftermarket, T2 Style (Thick Ring) Piston, GX390 Flat Top, Aftermarket, T2 Style (Thick Ring)

88mm Aftermarket Flat-top Piston for bore GX390s only.

Our Price: $51.99
Piston, GX390 Forged Flat-Top, drop In design, Std Piston, GX390 Forged Flat-Top, drop In design, Std

Forged Flat-Top to fit GX390s (and UT2 GX340s). Stock bore uses factory compression height & stock wrist pin diameter so it will drop in using a standard length rod.

Our Price: $139.99
Piston, GX390 Forged Flat-Top, Stroker Applications Piston, GX390 Forged Flat-Top, Stroker Applications

Forged Flat-Top to fit GX390s (andUT2 GX340s) using ARCs +.200 stroker crank.

Our Price: $139.99
Piston, 420cc OHV & Predator (90mm), Forged Flat-Top Piston, 420cc OHV & Predator (90mm), Forged Flat-Top

90mm Forged Flat-Top to fit 420cc OHV, 420 Predators, & +.080 over GX390s. Pistons have valve reliefs for high lift cams to fit both Honda & Hemi heads

Our Price: $139.99
Piston, 420cc OHV & Predator (90mm), Forged Flat-Top, Stroker Applications Piston, 420cc OHV & Predator (90mm), Forged Flat-Top, Stroker Applications

90mm Forged Flat-Top to fit 420cc OHV, 420 Predators, & +.080 over GX390s - Piston has.050 shorter compression height to fit ARC Stroker Cranks

Our Price: $139.99
Piston, 92mm for 460s & GX390 Type Engines, Forged, Flat-Top Piston, 92mm for 460s & GX390 Type Engines, Forged, Flat-Top

Lightweight flat-top forged piston for 92mm bore clone engine (440 & 460). This piston along with a billet rod will complete your bullet-proof engine build.

Our Price: $149.99