The QA1 high travel coil-over spring is a 2-1/2 inch inner diameter spring with a 10 inch free length and a 225 lb/in spring rate, finished in silver powder coat. It is wound from high-tensile chrome silicon steel, which uses fewer coils and a smaller wire diameter to cut weight and increase travel for faster suspension response. The spring goes through cold winding, heat treating, and shot peening for improved fatigue life, and the coil design allows it to be compressed to coil-bind without affecting spring rate or free height. Both ends are squared and ground for straight, accurate operation, and each spring is marked with its free length and rate. It is made in the USA and backed by a lifetime guarantee to stay within 2 percent of its original free height and rate under normal use.
Specifications:
- Type: high travel coil-over spring
- Inner diameter: 2-1/2 in
- Free length: 10 in
- Spring rate: 225 lb/in
- Material: high-tensile chrome silicon steel
- Finish: silver powder coat
- Construction: cold wound, heat treated, shot peened
- Ends: squared and ground
- Made in the USA
- Lifetime guarantee to remain within 2 percent of original free height and rate
- Part number: 10HT225
FAQ
What are the specs of the QA1 10HT225 spring?
It is a high travel coil-over spring with a 2-1/2 inch inner diameter, a 10 inch free length, and a 225 lb/in spring rate.
What is the spring made from?
It is wound from high-tensile chrome silicon steel and goes through cold winding, heat treating, and shot peening for strength and long fatigue life.
What finish does the 10HT225 have?
It has a silver powder coat finish.
Can the spring be compressed to coil-bind?
Yes. The coil design allows it to be compressed to coil-bind without affecting spring rate or free height.
Is the spring guaranteed?
Yes. It is made in the USA and lifetime guaranteed to remain within 2 percent of its original free height and rate under normal operating conditions.

