QA1 MOD Series Front Coilover Kit - Double Adjustable, Tapered Pigtail Spring, 550 lbs/in Rate - 1955-1957 Chevrolet Truck RZR XP 1000 EPS DYNAMIX Edition Every kit is extensively tested

Every kit is extensively tested on the W205 chassis and refined until it balances ride quality with performance — the reason C Class C180 coilovers from BC Racing are the best-selling adjustable kits in their segment worldwide

ST XA Coilovers deliver your 2000-2001 Audi S4 the look you need through a wide range of height adjustment

improving cornering stability

2016 Mazda CX-5 (KE)

2023 Lexus RC300h RWD (AVC10)

QA1 MOD Series Front Coilover Kit - Double Adjustable, Tapered Pigtail Spring, 550 lbs/in Rate - 1955-1957 Chevrolet Truck RZR XP 1000 EPS DYNAMIX Edition Every kit is extensively testeddon't be limited to adjustments! Completely re valve in minutes with the MOD Series Shock. Designed specifically on your 1955 1957 Chevrolet Truck to meet the demands required by today's high performance drag race and handling pro touring cars, QA1's multi patent pending MOD Series shock will transform the way racers respond to changing track conditions and configurations. The key element to this tunability is QuickTune Technology: dry modular valve