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Long Rod Combo for GX390s, Cast Piston & +.100 Rod Long Rod Combo for GX390s, Cast Piston & +.100 Rod

Economical kit can that produces significant more HP more than the stock rod & piston. Kit uses special long length rod and custom flat-top piston so that it fits a stock bore in a GX390 without any machining or boring.

Our Price: $184.99
Forged Piston & Long Rod Combo for GX390s Forged Piston & Long Rod Combo for GX390s

Forged Wiseco Flat top and Long Billet Rod combo, DROP IN KIT - NO CUTTING or HONING REQUIRED

Our Price: $319.99