QA1 27 Series Stock Mount Monotube Shock Absorber - Sealed Hyperscrew (IMCA) - 4-10 Valving - Steel

This is the QA1 27 Series Stock Mount Monotube Shock Absorber, specifically the Sealed Hyperscrew version with 4-10 valving. It's built to work with the original mounting locations on a wide range of vehicles, including popular models like the 1970-1981 Chevrolet Camaro and Pontiac Firebird, as well as 1978-1988 Buick Regal and Chevrolet Monte Carlo. If you're involved in racing classes that require you to keep your stock shock mounts, this shock absorber is designed to fit right in.

QA1 built this shock using a durable steel body with a zinc plating for good corrosion resistance. Inside, it features a 46mm hard-anodized piston and a sealed hyperscrew design, which helps provide consistent damping control, especially at lower shaft speeds, without creating excessive forces at higher speeds. This linear valving setup is known for helping to make a car more stable and easier for the driver to feel what the car is doing. Every QA1 shock is dyno-tested and serialized right here in the USA to ensure it performs as expected, and they are designed to be rebuilt and revalved by racers for repeatable performance.

With a compressed length of 9.4 inches and an extended length of 14 inches, this shock absorber uses a stud top and T-bar bottom mounting configuration. It's a popular choice for various stock car classes like street stocks, hobby stocks, and mini stocks, especially where IMCA Southern Sport Mod rules apply.