Wiseco 40081M09200 09-12 A-Cat 1000 T-Cat/W-Cat/TRV 12.51 Piston KitWiseco 40081M09200 09 12 A Cat 1000 T Cat W Cat TRV 12. 51 Piston Kit The Wiseco team has remained at the forefront of powersports performance through every era and evolution, including the development of high performance 4 strokes. Today, Wisecos forged 4 stroke pistons are designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength. Proven at every level of riding,