These are the Wiseco Pro Lite pistons you need to replace your old ones on your 421cc Cheetah, Cheetah Cub, Wampus, Serval, or other Banshee 68mm big bore kit using a +4mm crankshaft.   These are the  specially designed forged pistons with rings, pins, and clips to make your motor run right. 

They come sold as a pair.

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