The QA1 Cr-Si high travel coil-over spring is built from specially designed high-tensile chrome silicon alloy spring wire, allowing fewer coils and a smaller wire diameter. The lighter design increases travel through greater spacing between the coils, reduces unsprung weight, and reacts faster to optimize suspension performance. Careful heat treating and post-processing improve fatigue life, and the coil design lets the spring compress to coil bind without affecting spring rate or free height. This spring has a 2-1/2 inch inside diameter, a 12 inch free length, and a 450 lb/in rate, finished in silver powder coat and ground square at both ends for straight, consistent operation. Made in the USA.
Specifications:
- Type: Cr-Si high travel coil-over spring
- Inside diameter: 2-1/2 inch
- Free length: 12 inch
- Spring rate: 450 lb/in
- Material: high-tensile chrome silicon alloy spring wire
- Finish: silver powder coat
- Construction: cold wound, heat treated, shot peened
- Ends: ground square for straight, consistent operation
- Marking: free length and spring rate marked on the spring
- Origin: Made in the USA
- Warranty: lifetime guarantee to remain within 2% of original free height and rate under normal operating conditions
- Part number: 12HT450
FAQ
What are the dimensions and spring rate of the QA1 12HT450?
It is a high travel coil-over spring with a 2-1/2 inch inside diameter, a 12 inch free length, and a 450 lb/in spring rate.
What material and construction does this spring use?
It is made from high-tensile chrome silicon alloy spring wire that is cold wound, heat treated, and shot peened for strength, consistency, and long fatigue life.
What finish does it have?
It has a silver powder coat finish and is ground square at both ends for straight, consistent operation.
What size coil-over does the 2-1/2 inch inside diameter fit?
The 2-1/2 inch inside diameter is sized for 2-1/2 inch coil-over shock bodies.
Is this spring made in the USA and is it warrantied?
Yes. QA1 high travel springs are made in the USA and carry a lifetime guarantee to remain within 2% of the original free height and rate under normal operating conditions.
