QA1 · New
QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 550lbs/in - Flat - Aluminum
MPN GS401-10550B · Store SKU qapGS401-10550B
Supplier stock checked 11/7/2026, 7:24:37 AM UTC. Adding a part does not reserve it.
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Product details
These QA1 GM Pro Coil Systems are a great option for anyone looking for fully adjustable ride height and valving control. Choose a spring rate and adjustability that fits your driving style, adjust the valving to match and you are on your way. These shocks also utilize a fully threaded body that allows you to adjust your ride height for the perfect stance or to finely tune the weight balance for superior handling. Specially designed for QA1's Pro Coil Systems, the lightweight high travel springs have fewer coils and a smaller wire diameter, resulting in increased travel due to the larger distance between the coils. They reduce unsprung weight and react faster, optimizing suspension performance. Multiple spring rate options are also available and have been successfully tested in various applications, from casual street driving to hard core race applications. Adjustable Pro Coil System Features: Available in independent compression and rebound double adjustable, simultaneous compression and rebound adjustable, or drag "R" Series adjustable, Lightweight Billet Aluminum Coil-Over Shocks, High Travel Springs, Easy, Bolt-In Installation, Ride Height Adjustable, 100% Dyno Tested and Serialized, Serviceable and Rebuildable by QA1 Authorized Service Centers, Used in drag racing, street performance, autocross, road racing and street rod applications, Sold in Pairs, Non-Adjustable Pro Coil System Features: Steel, Stock Appearing Coil-Over Shocks, High Travel Springs, Easy, Bolt-In Installation, Ride Height Adjustable, Used in drag racing, street performance, autocross, road racing and street rod applications, Sold in Pairs Front Pro Coil single adjustable stock mount shock kit. Compressed length of 10.13" and extended length of 14". Includes 10" spring with rating of 550 and has a tapered flat end. Kit GM Pro Coil Alum S-Adj 10-550 Tapered Flat
Manufacturer fitment & guides
Check GS401-10550B against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
