27 Series monotube shock with sealed hyperscrew (IMCA). Compressed height of 14.3", extended height of 22.63". T-bar top and bushing bottom, with a valving of 7-4M. The 27 Series is a brand new stock mount monotube shock. Featuring a zinc plated body, 46 MM hard anodized piston and multiple valving options, the 27 Series works like our tried and true 26 Series, but with stock mount option. They are zinc plated for corrosion resistance, and are a popular choice for street stocks, hobby stocks, mini stocks and other classes that require a stock mount shock. These shocks are available with Hyperscrew (27 Series), or Sealed Hyperscrew (27A Series) (IMCA Southern Sport Mod legal) Hyperscrew. The damping curve allows for complete control of suspension at low shaft speeds without creating extreme forces at high shaft velocities. Linear valving provides a more stable car and allows the driver to feel the car better. They are racer revalveable and rebuildable, designed for unparalleled repeatability. Made in the USA, these shocks are 100% dyno tested & serialized.