QA1 10HT750 High-Travel Linear Coilover Spring, 2.5in ID x 10in, 750lb/in

Compatibility

• Universal - fits any front or rear coilover shock with a straight (non-tapered) 2-1/2 in. I.D. spring perch
• Compatible with standard 2.5 in. I.D. coilover hardware, including QA1 Pro Coil and Stocker Star systems

Fitment Notes

• Sold individually
• Linear (constant) 750 lb/in. rate - not variable/progressive
• A black-finish version of this same rate and length (10HT750B) is sold separately if you need that finish instead

Features

• Linear spring rate stays constant through the full stroke for predictable, consistent handling
• High-travel design - smaller-diameter chrome silicon wire and fewer coils allow more compression before coil-bind
• Lightweight construction reduces unsprung weight for quicker suspension response
• Ground, squared ends for straight, consistent operation
• Suitable for racing, off-road, and high-performance street use
• Lifetime warranty - guaranteed to remain within 2% of original free height and rate

Specifications

• Length: 10 in.
• Rate: 750 lb/in. (linear)
• Inside Diameter: 2-1/2 in. (upper and lower)
• Spring Type: Straight (non-tapered)
• Upper Grind: Flat
• Finish: Silver powder coat

Included Components

• 1x Coilover Spring

Product Description

The QA1 10HT750 is a high-rate, high-travel coilover spring for builds that need serious support - heavier cars, aggressive alignment setups, or higher-load applications - without giving up the extra suspension travel QA1's high-travel design is built around. The 750 lb/in. rate is linear rather than progressive, so it holds a consistent, predictable feel throughout the full stroke instead of stiffening as it compresses.

Built from chrome silicon alloy wire with fewer coils than a standard spring, it compresses further before hitting coil-bind, letting you use more of the available travel before bottoming out. As a 2.5 in. I.D. spring, it's compatible with any coilover shock built around that diameter, not tied to a specific vehicle.