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Crankshaft, Stroker, GX390 & 420 Predators, 69mm (+.200), 420cc to 460cc : Aftermarket Core

69mm Crankshaft producing up to 460cc. This is Chinese OHV core that fits Honda GX340, GX390 or any of the 420 & 440 Chinese OHVs. Gear for balance shaft & Bearing included!

433 cc with 88 mm Bore (GX390)
440 cc with 90 mm Bore (420 Predator)
460 cc with 92 mm Bore

Warning: Piston may need to be cut approx. .060" when using genuine Honda Blocks and Pistons.
Clearancing may be required. This is not a bolt in part, but is for experienced engine builders.

Our Price: $67.99
Crankshaft, Stroker, GX390 & 420 Predators, 414cc to 433cc: Genuine Honda Core

414cc Stroker Crank, OEM Honda Crankshaft welded and ground producing +.160 more stroke for a total of 2.68" (68mm), Puts piston at -.010 to TDC on Honda Blocks (Chinese OHVs will Vary),

Use with stock length rod and OEM Piston (piston must be cut .040)

Crank requires balancing

414cc with GX390 Piston (88mm)
433cc with 420 Predator Piston (90mm)
452cc with 92mm bore


Our Price: $259.99
Crankshaft, Stroker, GX390 +.200 Billet Steel (460cc with 92mm Bore)


Billet Steel 70 mm (+200) Crankshaft producing up to 460cc.

433 cc with 88 mm Bore (GX390)
440 cc with 90 mm Bore (420 Predator)
460 cc with 92 mm Bore

Warning: Piston may need to be cut approx. .060" when using genuine Honda Blocks and Pistons.
Clearancing may be required. This is not a bolt in part, but is for experienced engine builders.

Our Price: $489.99