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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30
Best flowing & sounding exhaust on the market today
Price is for a rear axle set(Pair) replacement disc rings only
100/300 lbs/in Progressive
Supports both twin turbo N54 and single turbo N55 BMW 135i variants
Round Wire Linear Rate Bump Springs 3000 lbs/in
Swift Round Wire Linear Rate Bump Springs 400 lbs/in Metric Coilover Springs Best flowing & sounding exhaustRound Wire Linear Rate Bump Springs 400 lbs in Swift Bump Springs are made from a proprietary material. The same springs are used in Super GT, Formula Nippon, F3, F3000, Super Taikyu, IMSA, Pirelli World Challenge, Rally America, VLN, Le Mans Series, Formula Drift, and many other professional racing avenues.
