Wiseco VW 1.8L 8V Head 81.5mm Bore 9.5:1 CR Pistons (Inc Rings) Kuromiuniverse2023's Parents Hello yoshi Wiki Fandom. Professional Series forged racing pistons from Wiseco are no expense spared pistons designed for the serious racers and builders. Packed full of custom level performance and durability features and provided with premium rings, Professional Series pistons are designed and built for use in heavy to severe duty race builds. Remove your limits with Wiseco? s Professional Series. This Part Fits: Year Make Model Submodel 1985 1986,1988 1989 Volkswagen Golf Base 1987 1992 Volkswagen Golf GL 1987 1988 Volkswagen Golf GT 1985 1987 Volkswagen Golf GTI 1990 1992 Volkswagen Golf GTI 8 Valve 1984 1989 Volkswagen Jetta Base 1988 1992 Volkswagen Jetta Carat 1984 1992 Volkswagen Jetta GL 1984 1987 Volkswagen Jetta GLI 1987 Volkswagen Jetta Wolfsburg Edition