Crankshaft, Stroker, GX270 (+.160"), 292cc

292cc Stroker Crank, OEM Honda Crankshaft welded and ground producing .160 more stroke, 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.



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

CCs for +.160 Crank
414cc with GX390 Piston (88mm)
433cc with 420 Predator Piston (90mm)
452cc with 92mm bore

CC's for +.200 equals
420cc with GX390 Piston (88mm)
440cc with 420 Predator Piston (90mm)
460cc with 92mm bore.



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.



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.



Engine Kit, 292cc (+.160) Stroker - GX270s

292+cc engine kit for GX270s

OEM Crankshaft welded and ground producing .160 more stroke, Includes Crank, Billet Rod, choice of Piston, & Rings, Wristpin & Clips. Puts piston at TDC, Note: This is not a bolt in kit, but for experienced engine builders. Fully Balanced. Also available for GX240s, please email.

Available in std, .010, .020, and .030.



Engine Kit, 414cc (+.160) Stroker - GX390s

414cc or 420cc Engine kit.

Choice of
Forged OEM Honda Crankshaft welded and ground producing .160 more stroke producing 414 cc or
Chinese OHV Cast Crank with .200 More Stroke, producing 420cc

Choice of
OEM Honda Dished Piston
Forged Flattop Piston

Includes Crank, Billet Rod, choice of Piston, & Rings, Wristpin & Clips. Puts piston at TDC, Note: This is not a bolt in kit, but for experienced engine builders.

Available unbalance or Fully Balanced.

OEM piston available in oversize, Forged in std only