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

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.

Vehicle Fitment:
2008-2015 Mitsubishi Lancer Evolution X

More Info:
"CP Groove" stands for Constant Pressure Groove. 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. When used in combination with lateral gas ports, the CP groove helps keep gas ports clear of carbon build up. In addition, the CP groove prevents the top land from smudging into the top ring if the land rubs the cylinder bore.

Features:
- High strength aluminum forging
- Super lightweight designs
- Fully CNC machined and balanced to within +/- 1 gram
- Wrist pins included
- Accumulator groove included
- Double pin oilers, force fed from oil ring
- Pin lock grooves for easy lock removal
- Includes piston rings, wrist pins, and circlips
- 86.5mm Bore Size
- 9.0:1 Compression Ratio