Product Overview

CP Carrillo 4B11 Evo X 9.0:1 86.5mm Bore Pistons (SC7221)

Verified Details

• Vehicle Fitment
• More Info
• This groove works as a channel on the lower part of the top land that equalizes pressure to the back of the top ring groove.
• In addition, the CP groove prevents the top land from smudging into the top ring if the land rubs the cylinder bore.
• High strength aluminum forging
• Fully CNC machined and balanced to within +/- 1 gram
• Accumulator groove included
• Pin lock grooves for easy lock removal
• 86.5mm Bore Size
• The CP/Carrillo Piston Set for the Evo X include 4 pistons, rings, wrist pins and pin clips with a 86.5mm bore size and 9.0:1 compression ratio.
• 2008-2015 Mitsubishi Lancer Evolution X
• "CP Groove" stands for Constant Pressure Groove.
• When used in combination with lateral gas ports, the CP groove helps keep gas ports clear of carbon build up.
• Features
• Part number: CP-SC7221