Competition Clutch Full Face Dual Friction Stage 3 Clutch Kit Subaru STI 2004-2021 | 15030-2250 vendor_Truhart Tein recommends the following springs:

Tein recommends the following springs: 16

The exhaust is constructed of 4 inch diameter

(1) ORB-10 return port with AN-10 flare adapter port plugs included

maximizing exhaust flow from cylinders 1 and 4 to the manifold collector for faster turbo response

Don't ignore your electrical system

Competition Clutch Full Face Dual Friction Stage 3 Clutch Kit Subaru STI 2004-2021 | 15030-2250 vendor_Truhart Tein recommends the following springs:Part #: 15030 2250 The CCI 2250 Brass Plus Cerametalic performance kit is engineered to deliver up to 65 70% increase in Torque capacity for heavy duty street use. This unit is designed for the cost sensitive enthusiast who still enjoys the benefit of the dissimilar materials. This combination allows superb holding power with great clutch life in moderately enthusiastic conditions. Wheel Torque Rating ~450 Features: Stage 3 Full Face Dual Friction