The QA1 Stocker Star non-adjustable smooth body shock, part number TN401, is a stock-mount billet aluminum shock absorber. Non-adjustable valving delivers a fixed, street-friendly ride with no tuning required. It is built as a fitment for 1964-1977 Ford Mustang & Mercury. The lightweight smooth body housing is made in the USA, installs in the stock location, and is 100 percent dyno tested, serialized, and rebuildable through QA1 authorized service centers.
Specifications:
- Series: QA1 Stocker Star smooth body shock
- Adjustment: Non-Adjustable
- Length (collapsed / extended): 10.57 in / 14.4 in
- Mounting (top / bottom): T-bar / stud
- Body material: billet aluminum, smooth body
- Origin: made in the USA
- Testing: 100 percent dyno tested and serialized
- Service: rebuildable by QA1 authorized service centers
- Part number: TN401
Vehicle Applications:
- 1970 Ford Maverick
- 1971 Ford Maverick
- 1972 Ford Maverick
- 1973 Ford Maverick
- 1974 Ford Maverick
- 1975 Ford Maverick
- 1976 Ford Maverick
- 1977 Ford Maverick
- 1964 Ford Mustang
- 1965 Ford Mustang
- 1966 Ford Mustang
- 1967 Ford Mustang
- 1968 Ford Mustang
- 1969 Ford Mustang
- 1970 Ford Mustang
- 1971 Mercury Comet
- 1972 Mercury Comet
- 1973 Mercury Comet
- 1974 Mercury Comet
- 1975 Mercury Comet
- 1976 Mercury Comet
- 1977 Mercury Comet
- 1967 Mercury Cougar
- 1968 Mercury Cougar
- 1969 Mercury Cougar
- 1970 Mercury Cougar
FAQ
What vehicles does the QA1 TN401 shock fit?
It fits 1964-1977 Ford Mustang & Mercury applications, including 1970 Ford Maverick, 1971 Ford Maverick, 1972 Ford Maverick, 1973 Ford Maverick, 1974 Ford Maverick, 1975 Ford Maverick and more. The full fitment list is shown above.
Is the QA1 TN401 shock adjustable?
Non-adjustable valving delivers a fixed, street-friendly ride with no tuning required.
What are the collapsed and extended lengths?
The TN401 measures 10.57 in collapsed and 14.4 in extended, with T-bar / stud mounting ends.
Is this shock made in the USA and rebuildable?
Yes. It is a lightweight billet aluminum smooth body shock made in the USA, 100 percent dyno tested and serialized, and rebuildable through QA1 authorized service centers.

