Darton Seal Tight Sleeves for 4G63 Evo DSM (300-050-SF/DF) FPR Rebuild Kit Our award winning performance systems

Our award winning performance systems are what all others are measured by

Lighter is faster

(Manual Transmission Only)

47020CSL Rear (Right) Slotted (Cryo-Treated) 126

SPL FLCA FRS

Darton Seal Tight Sleeves for 4G63 Evo DSM (300-050-SF/DF) FPR Rebuild Kit Our award winning performance systemsDarton Dry Seal Tight sleeves for 4G63T replace your factory cylinder liners with a stronger, more durable and longer lasting surface that can hold more power and may be bored further than stock. A "Dry Sleeve" means that the sleeve does not contain water or coolant passages bored through the top flange. This solid design provides a more rigid structure to prevent warping and sleeve expansion. Darton sleeves must be finished at the machine shop and