QA1 MOD Series Front Coilover Kit - Double Adjustable, Large Tapered Flat Spring, 600 lbs/in Rate - 1991-2004 GMC Sonoma RZR XP 1000 High Lifter Edition AST Lowering Springs for the

AST Lowering Springs for the 2007-2015 Audi A4 (B8) are manufactured from a premium high tensile chromium-silicone wire which is handpicked by AST engineers for its quality and metal consistency

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QA1 MOD Series Front Coilover Kit - Double Adjustable, Large Tapered Flat Spring, 600 lbs/in Rate - 1991-2004 GMC Sonoma RZR XP 1000 High Lifter Edition AST Lowering Springs for thedon't be limited to adjustments! Completely re valve in minutes with the MOD Series Shock. Designed specifically on your 1991 2004 GMC Sonoma 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