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Instruction Sheets for Part Number QA1-GS401-10500C
Coilover Kit, Pro Coilover System, Front, Single Adjustable, Buick, Chevy, GMC, Oldsmobile, Pontiac, Pair
See More Specifications
Estimated Ship Date from Texas: Monday 3/16/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
GS401-10500C
Part Type:
Product Line:
Summit Racing Part Number:
QA1-GS401-10500C
UPC:
806990062178
Coilover Kit Position:
Front
Adjustable Valving:
Yes
Number of Valving Selections:
18
Shocks Included:
Yes
Internal Design:
Twin-tube
Coilover Springs Included:
Yes
Spring Rate (lbs./in.):
500 lbs./in.
Suspension Height Adjustment:
0.0-2.0 in. lowered
Recommended Front-End Weight:
2,001-2,100 lbs
Gas Charged:
No
Extended Length (in.):
12.88
Collapsed Length (in.):
8.63
Threaded Adjustment Range:
3.000 in.
Upper Mount:
Stud
Lower Mount:
Bar pin
Shock Body Material:
Aluminum
Shock Body Finish:
Silver
Bushing Material:
Polyurethane
Bushing Color:
Black
Spring Finish:
Gray/Silver
Crossmember Included:
No
Adjustable Mounting Bracket Included:
No
Hardware Included:
Yes
Welding Required:
No
Quantity:
Sold as a pair.
Notes:
Coilover shocks are single adjustable Pro series GS401 shocks. Springs are 10 in. tapered with a large diameter, flat upper end style 10HTBF500 springs.
QA1 Pro Coilover Systems
QA1 Pro coilover systems are engineered from the ground up to offer unmatched performance over stock suspension setups. Pro coilover systems utilize adjustable and non-adjustable coilover shocks and springs designed specifically for replacing the factory shocks and springs. This combination offers ride height adjustment and variable position valving adjustment (where applicable) for performance not found in other kits. Choose QA1 Pro coilover systems for your next suspension upgrade.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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