*** Now Pre Clearanced for Compression Release ***
This crankshaft is machined from a solid bar of 4340 hardened Chromoly steel and will give you .175"(2.300" total stroke) more stroke than the stock crankshaft with far superior strength. When installed in a Harbor Freight Predator 212cc you will net a +.136" stroke due to the Predator's 55mm stroke OEM crank. You will need at minimum, our connecting rod #6265 and a Wiseco 11132PS(11132P94 in a 212 Predator) or larger piston to run this crank. The crank is properly balanced when run with these parts. Other modifications to the engine are up to you.
*This piston has a thick dome which is designed to be cut down to your engine's deck height. You must cut down the top of the piston by test-installing the parts and measuring to see how much needs to be taken off.
* Now available ARC connecting rod #6765 3.525" "Drop In" rod that does not require machining of the piston in most applications.
* The rod and crank are pre-clearanced for for most cam applications but some additional machining may be required.
*The only way a non-adjustable flywheel can be used with this crank is WITHOUT a flywheel key.