Part Number = SPR-TS1015-SI_RB25 (Replaces SPR-2081/RB25). Exhaust Spring --> Use OEM Spring Seat + Supertech Seat # SS-2820-E (Not Included).
Supertech MITSUBISHI 4G63 VALVE SET-VALVES / VALVE SPRINGS / VALVE SEALS
SuperTech Valve Springs
Supertech SPR-H1022D-16 Dual Valve Springs for Honda/Acura K20 K24 F20C F22C
Supertech SPR-TS1015 Dual Valve Springs for Toyota 2JZ-GTE Subaru EZ30
Supertech SPR-H1021D-16 Dual Valve Springs for Honda/Acura K20 K24 F20C F22C
Supertech Performance Valve Stem Seals VS-H5.5-I VS-H5.5-E 04-05 ACURA EL D17A2