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Crankshaft, 420cc & 440cc : Aftermarket Replacement (Chinese), 66mm Stroke Crankshaft, 420cc & 440cc : Aftermarket Replacement (Chinese), 66mm Stroke

OEM Crankshaft for 420 Predators and other 420/440cc engines with 66mm Stroke, 1" Shaft,
Also works in GX390s but has 2mm (0.080") stroke producing 402cc.
New Take Off.

Our Price: $84.99
Crankshaft, Stroker, GX390 & 420 Predators, 414cc to 433cc: Genuine Honda Core 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
ARC Stroker Crankshaft GX390 +.200 ARC Stroker Crankshaft GX390 +.200

GX390 +.200 Stroker Crankshaft. 2.720"(69mm) stroke with standard crank pin diameter. Machined in house from hardened 4340 Chromoly to the exact standard you have come to expect from ARC. Dual plane balanced to eliminate the need for the OEM counter balance system. Design for use with the ARC 6272 rod and the 27-3464 (88mm) piston. 1" PTO shaft. Some internal engine clearancing may be required. If using piston bigger than 90mm, re-balancing may be required.

Our Price: $499.99