QA1 MOD Series Front Coilover Kit - Double Adjustable, Large Tapered Flat Spring, 350 lbs/in Rate - 1973-1977 GMC Sprint 840Ci 2018 BMW X6 50i xDrive

2018 BMW X6 50i xDrive (F16)

Every kit is extensively tested on the C218 chassis and refined until it balances ride quality with performance — the reason CLS63 Sedan AMG coilovers from BC Racing are the best-selling adjustable kits in their segment worldwide

2008 Lotus Elise (S2)

It's Eibach's legendary spring system that dramatically improves both a vehicle's street performance and appearance

2006 BMW M5 (E60 Type M560)

QA1 MOD Series Front Coilover Kit - Double Adjustable, Large Tapered Flat Spring, 350 lbs/in Rate - 1973-1977 GMC Sprint 840Ci 2018 BMW X6 50i xDrivedon't be limited to adjustments! Completely re valve in minutes with the MOD Series Shock. Designed specifically on your 1973 1977 GMC Sprint 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 packs