ProTru by Wiseco Dome Piston and Ring - Forged - 4.280" Bore - 1/16 x 1/16 x 3/16" Ring Grooves - Plus 21.0 cc - Big Block Chevy M59L3 Available in standard and XD

Available in standard and XD

Pressure Injected Aluminum Alloy Pump Bodies

7percent fuel economy improvement versus a 15W-40 reference

Mechanical Secondaries(Dual Accelerator Pumps)NOTE: Due to the natural color variations of the dichromate plating process

Helps prevent thin cylinder walls from cracking and improves ring seal by keeping cylinders round

ProTru by Wiseco Dome Piston and Ring - Forged - 4.280" Bore - 1/16 x 1/16 x 3/16" Ring Grooves - Plus 21.0 cc - Big Block Chevy M59L3 Available in standard and XDChevrolet Big 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 Dome Forged 4. 280 in Bore 1 16 x 1 16 x 3 16 in Ring Grooves Plus 21. 00 cc Big Block