JE Pistons Ring Sets 99.5 79 130.5 30.7 57.0 8.5:1 -16.5 407 TF | JG4904-3917 bundle product and even timed track driving

and even timed track driving

- Helps Reduce Wheel Hop- Reduces Drivetrain Movement

These give you improved traction and reduced wheel hop without too much vibration

maximizing traction on power out

JE Pistons Ring Sets 99.5 79 130.5 30.7 57.0 8.5:1 -16.5 407 TF | JG4904-3917 bundle product and even timed track drivingFitment Information: Subaru Forester XT 2004 2013 Subaru WRX 2006 2014 Subaru STI 2004 2021 Subaru Legacy GT 2005 2012 Sold in sets for 4 pistons. File Fit: Yes Industry: Automotive Oil Ring Thickness: 0. 098 Second Compression Ring Thickness: 0. 0472 Second Ring Facing Material: Phosphate Second Ring Material: Iron Third Ring Facing Material: Carbon Steel Third Ring Material: Carbon Steel Top Compression Ring Thickness: 0. 0472 Top Ring Facing