ProTru by Wiseco 23 Degree Flat Top Forged Piston and Ring Kit - 4.030 in Bore - 1/16 x 1/16 x 3/16 in Ring Grooves - Minus 5.00 cc - Small Block Chevy PTS504A3 Ignition Lead Terminal Optional mounting use JM-F-S for

Optional mounting use JM-F-S for flat panel mounting and PTT-HM-MT-6B for steering hub

GMC Canyon

Adjustable from 20 psi to maximum fuel pump capacity

Protect your engine from over revving with the DUI Rev Limiter

ProTru by Wiseco 23 Degree Flat Top Forged Piston and Ring Kit - 4.030 in Bore - 1/16 x 1/16 x 3/16 in Ring Grooves - Minus 5.00 cc - Small Block Chevy PTS504A3 Ignition Lead Terminal Optional mounting use JM-F-S forChevrolet Small BlockWiseco Pro Tru is a division of Wiseco specializing pistons and piston rings for price conscious engine builders. They offer complete kits to fit a wide range of engines. Manufactured by Wiseco Performance Products, ProTru Forged Pistons are affordable with features usually found only in more expensive pistons. Product Description: Piston and Ring 23 Degree Flat Top Forged 4. 030 in Bore 1 16 x 1 16 x 3 16 in Ring Grooves Minus 5.