ProTru by Wiseco 23 Degree Flat Top Piston Forged 4.165" Bore 1/16 x 1/16 x 3/16" Ring Grooves - Minus 7.0 cc Helmet Shield Pivot Kit Degrees left or right and

Degrees left or right and 11 degrees up and down for ease of engagement

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ProTru by Wiseco 23 Degree Flat Top Piston Forged 4.165" Bore 1/16 x 1/16 x 3/16" Ring Grooves - Minus 7.0 cc Helmet Shield Pivot Kit Degrees left or right andChevrolet Small Block 400Wiseco 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. 165 in Bore 1 16 x 1 16 x 3 16 in Ring Grooves