Coilover Kit Proma Star Struts

The Coilover Kit Proma Star Struts from QA1 is a complete suspension hardware package designed for builders and enthusiasts who demand precision coilover assembly and adjustment capabilities. This kit provides all essential components needed to properly mount and tune 2.5-inch diameter coilovers with 2-inch shock bodies, making it ideal for custom suspension builds, performance vehicles, and competition applications where ride height and spring preload adjustability are critical to handling performance.

The kit includes a complete hardware assortment comprising a cap, seat, adjuster nut, washers, and thrust bearings—each precision-engineered to ensure smooth preload adjustment and reliable load transfer. Manufactured from aluminum and finished in contrasting red and black anodize, these components resist corrosion while providing visual appeal and durability under demanding conditions. The thrust bearings enable smooth rotation during adjustment without binding, while the adjuster nut allows fine-tuning of spring preload for optimal suspension geometry and vehicle behavior across varying track or street conditions.

Suspension tuners, fabricators, and performance-focused vehicle owners benefit most from this hardware kit when building or upgrading independent coilover systems. The compact, lightweight design (0.63 lbs) makes installation straightforward on single-seater racecars, drift platforms, road course competitors, and street-driven performance cars where coilover adjustability maximizes grip and stability. Proper assembly of these components is essential to prevent spring seat migration and ensure predictable suspension response during aggressive driving or load transitions.