GX200, Clone, Predator, and Other Small GX Wiseco Forged 70mm Two Ring Piston Kit - Optional Compression Heights

Forged aluminum Wiseco two ring piston with 0.640" compression height and .490 wrist pin. Works with ARC .490 wrist pin rods and either clone sized 1.180" rod journals or 1" Briggs "stroker" rods.

Bore: 70mm 

Compression height: 0.640" with optional shorter heights

Wrist pin diameter: 0.490"

Kit includes wrist pin, circlips, and ring set. 

You can use the full 0.640" compression height piston with the 58mm crank in the Predator 224 block with a 3.595" rod and you'll be 0.012" above the deck. We recommend you go to a three ring 0.640" compression height Wiseco piston for this option instead of using a full height two ring.

0.605" option will sit at zero deck in a Predator 224 block with a 60mm stroke crank and ARC 3.595" rod.

0.550" option will sit 0.001" under the deck on Predator 224 blocks with 63.5mm stroke crank and 3.575" ARC rod, and with 63.5mm stroke crank and 3.525" ARC rod in 70mm bore Tillotson Racing Block the piston will sit 0.010" under the deck. 

In either block, this 70mm piston with a 63.5mm stroke crank will yield 244cc. 

Click here for 63.5mm / 2.500" stroke cranks 

Click here for ARC billet 3.525" x 1" stroker connecting rods

Click here for ARC billet 3.575" x 1" stroker connecting rods