GSC Power Division Products
STM carries GSC Power-Division high-quality performance cams and valve train components for the Mitsubishi Evo and DSM 4G63 and 4B11, Subaru WRX, STi, Nissan GTR, Audi R8, Lamborghini, Honda, Acura and more!

-
GSC 4B11 Evo X Beehive Valve Spring Kit (5042) $386.39
-
GSC 4B11 Evo X Conical Valve Spring Kit (5062) $466.33
-
GSC 4B11 Evo X Exhaust Valve Guides (3011) from $5.18
-
GSC 4B11 Evo X Exhaust Valve Guides with Stopper (3013) from $5.18
-
GSC 4B11 Evo X Exhaust Valves from $15.04
-
GSC 4B11 Evo X Intake Valve Guides (3012) from $5.18
-
GSC 4B11 Evo X Intake Valve Guides with Stopper (3014) from $5.18
-
GSC 4B11 Evo X Intake Valves from $15.17
-
GSC 4B11 Evo X Valve Stem Seals (1010) $53.55
-
GSC 4G63 Beehive High Pressure Spring Kit (5057) $425.47
-
GSC 4G63 Beehive Race Spring Kit (5058) $469.88
-
GSC 4G63 Beehive Spring Kit (5040) $386.39
-
GSC 4G63 Beehive Spring Kit High RPM (5041) $386.39
-
GSC 4G63 Evo 8/9 Beehive Springs (5039) $208.74
-
GSC 4G63 Evo DSM Exhaust Valves from $15.04
-
GSC 4G63 Evo DSM Intake Valves from $15.17
-
GSC 4G63 Evo DSM Valve Stem Seals (1002) $15.00
-
GSC 4G63 Evo DSM Zero-TICK Lifters (4042) $178.50
-
GSC 4G63 Exhaust Valve Guides (3001) from $5.18
-
GSC 4G63 Exhaust Valve Guides Shorty with Stopper (3005) from $5.18
-
GSC 4G63 Exhaust Valve Guides with Stopper (3003) from $5.18
-
GSC 4G63 Intake Valve Guides (3002) from $5.18
-
GSC 4G63 Intake Valve Guides with Stopper (3004) from $5.18
-
GSC 4G63 OEM Replacement Valve Keeper Set (1003) $29.75
-
GSC 4G63 OEM Replacement Valve Spring Seats (1004) $20.40
-
GSC 4G63 Oversized Valve Spring Seats (4041) $46.19
-
GSC 4G63 Race Balance Shaft (8042) $191.25
-
GSC B16 B18 Honda Exhaust Valve Guides (6mm) with Stopper (3049) from $5.18
-
GSC B16 B18 Honda Exhaust Valve Guides with Stopper (3051) from $5.18
-
GSC B16 B18 Honda Intake Valve Guides with Stopper (3052) from $5.18
-
GSC Billet Cams for 2004-2007 STi USDM AVCS $956.25
-
GSC Billet Cams for 2008-2020 STi $998.75
-
GSC Billet Cams for DSM $599.25
-
GSC Billet Cams for Evo 4-8 $599.25
-
GSC Billet Cams for Evo 9 MIVEC $616.25
-
GSC Billet Cams for Evo X $658.75
-
GSC Billet Cams for R35 GTR $1,338.75
-
GSC BRZ/FRS/86 Beehive Valve Spring Kit (5056) $432.58
-
GSC BRZ/FRS/86 Dual Valve Spring Kit (5256) $424.15
-
GSC BRZ/FRS/86 Exhaust Valve Guides (3063) from $5.18
-
GSC BRZ/FRS/86 Exhaust Valve Guides with Stopper (3105) from $5.18
-
GSC BRZ/FRS/86 Intake Valve Guides (3064) from $5.18
-
GSC BRZ/FRS/86 Intake Valve Guides with Stopper (3106) from $5.18
-
GSC BRZ/FRS/86 Single Valve Spring Kit (5756) $288.68
-
GSC D16 Honda Valve Guides with Stopper (3060) from $5.18
-
GSC EJ WRX/STi Beehive Valve Spring Kit (5043) $386.39
-
GSC EJ WRX/STi Conical Dual Valve Spring Kit (5074) $604.01
-
GSC EJ WRX/STi Conical High Pressure Valve Spring Kit (5073) $488.54
-
GSC EJ WRX/STi Exhaust Valve Guides (3027) from $5.18
-
GSC EJ WRX/STi Exhaust Valve Guides with Stopper (3025) from $5.18
-
GSC EJ WRX/STi Exhaust Valves from $15.04
-
GSC EJ WRX/STi Intake Valve Guides (3028) from $5.18
-
GSC EJ WRX/STi Intake Valve Guides with Stopper (3026) from $5.18
-
GSC EJ WRX/STi Intake Valves from $15.04
-
GSC EJ WRX/STi OEM Replacement Valve Spring Seats (1005) $20.40
-
GSC EJ WRX/STi Single Valve Spring Kit (5743) $266.48
-
GSC EJ WRX/STi Valve Stem Seals (1022) $15.00
-
GSC FA20 WRX Exhaust Valves from $15.04
-
GSC FA20 WRX Intake Valves from $15.17
-
GSC FA20 WRX/BRZ Valve Stem Seals (1023) $15.00