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 SPR-H1022D-16 Dual Valve Springs for Honda/Acura K20 K24 F20C F22C
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
SUPERTECH PERFORMANCE VALVE STEM SEAL KIT VS-M6.6I VS-M6.6E 4G63 2G DSM ECLIPSE
SuperTech Beehive Valve Spring Set For Mini R56 N14 / N18 - SPR-MC56BE-16