GSC P-D Ovate Beehive Valve Spring vendor_Competition Clutch or DuroBall kit at the

or DuroBall kit at the rear of the front lower control arm

2004-2021 Subaru STI (with a Front Mount Intercooler)

Part Number: BC8860

this intake kit includes a Lifetime Warranty

GSC P-D Ovate Beehive Valve Spring vendor_Competition Clutch or DuroBall kit at thePart #: TVS1735 GSC Power Division Beehive springs feature some of the most impressive manufacturing techniques in the industry. Our beehive spring uses an ovate wire which utilizes advanced material heat treatment methods for superior load loss capabilities. What this means to you is our spring has the highest level of spring load retention while still maintaining good fatigue throughout the life of the spring. Only the best materials go into the GSC