QA1 GS501-11250C GM Pro Coil Front Coilover System Single Adjustable 11in 250 lb/in Aluminum

The QA1 GS501-11250C is a front Pro Coil single adjustable coilover system engineered for GM applications. Featuring a lightweight billet aluminum shock body, this kit delivers fully adjustable ride height and valving control for street performance, autocross, road racing, drag racing, and street rod use. The kit is sold as a pair and is designed for easy bolt-in installation using either OE stamped steel control arms or QA1 tubular control arms.

The GS501-11250C shock features a fully threaded body, allowing precise ride height adjustment to dial in the perfect stance or fine-tune corner weight balance. With 18 valving positions of simultaneous compression and rebound adjustment, the single adjustable design allows you to easily transition between a comfortable street feel and a firm, performance-oriented setup. The 18-position adjustment knob is accessible by turning the steering wheel to full lock and reaching in at the base of the shock.

Key Specifications:

• Shock body construction: Lightweight billet aluminum
• Adjustability: Single adjustable (18 simultaneous compression/rebound positions)
• Internal design: Twin-tube
• Compressed length: 10.13 inches
• Extended length: 17 inches
• Included spring length: 11 inches
• Spring rate: 250 lb/in
• Spring end style: Large tapered flat
• Ride height adjustable: Yes (fully threaded body)
• Sold as: Kit (pair)
• 100% dyno tested and serialized
• Made in the USA

Pro Coil Spring Technology:

QA1's Pro Coil springs are American-made, high-travel units wound with fewer coils and a smaller wire diameter than conventional springs. This design increases the distance between coils for greater travel, reduces unsprung weight, and allows the suspension to react faster for optimized performance. Kits are serviceable and rebuildable through QA1 Authorized Service Centers.