The QA1 Proma Star single-adjustable coil-over shock brings coil-over performance to custom chassis and suspension builds that have no direct-fit option. It uses a 2.5 inch spring and an included hardware kit for quick ride height adjustment, and a single knob stiffens or softens the ride for street use. This shock has a compressed height of 11-5/8in and an extended height of 16-7/8in with bearing eyelet top and bottom. Every Proma Star shock is made in the USA, dyno tested, and backed by a Limited Lifetime Warranty when registered before installation.
Specifications:
- Series: QA1 Proma Star
- Type: Single-adjustable coil-over shock
- Mounting: Custom mount, Bearing eyelet top and bottom
- Spring: Accepts 2.5in coil-over spring (sold separately)
- Compressed height: 11-5/8in
- Extended height: 16-7/8in
- Made in the USA, dyno tested and serialized
- Part number: DS501
FAQ
What vehicles does the QA1 Proma Star coil-over shock fit?
It is a custom-mount shock made for custom chassis and suspension projects rather than one vehicle, so it fits any build where the compressed height, extended height, and mounting style match.
Is this shock single or double adjustable?
It is single adjustable. One knob adjusts firmness for compression and rebound together, which suits street-driven cars.
What spring does it use?
It is built for a 2.5 inch coil-over spring. Spring length and rate are chosen to match vehicle weight and target ride height, and the spring is sold separately.
What are the compressed and extended lengths?
This DS501 shock has a compressed height of 11-5/8in and an extended height of 16-7/8in with bearing eyelet top and bottom.
Is it made in the USA and warranted?
Yes. QA1 Proma Star shocks are made in the USA, dyno tested, and eligible for a Limited Lifetime Warranty when registered before installation.
