QA1 MOD Series Front Coilover Kit - Double Adjustable, Tapered Pigtail Spring, 400 lbs/in Rate - 1964-1967 Pontiac GTO E420 Every kit is extensively tested

Every kit is extensively tested on the V36 chassis and refined until it balances ride quality with performance — the reason G37x coilovers from BC Racing are the best-selling adjustable kits in their segment worldwide

Bilstein B4 OE Replacement Dampers for the 2002-2005 BMW 745i are specifically engineered to be the best choice for maintaining the original ride quality of your vehicle

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BC Racing DS Series Coilovers for the 2006-2012 Lexus GS350 (GRS191) blend street-tuned ride quality with track-ready adjustability

Bilstein B4 OE Replacement Dampers for the 2013-2018 Ford C-Max are specifically engineered to be the best choice for maintaining the original ride quality of your vehicle

QA1 MOD Series Front Coilover Kit - Double Adjustable, Tapered Pigtail Spring, 400 lbs/in Rate - 1964-1967 Pontiac GTO E420 Every kit is extensively testeddon't be limited to adjustments! Completely re valve in minutes with the MOD Series Shock. Designed specifically on your 1964 1967 Pontiac GTO 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