Corvette QA1 Front Pro Coilover Shock Absorber 8in x 700lb in Alum Step By Step Birth Of A QA1 Adjustable Racing Shocks Qa1 Shock Numbers at Mitchell Trigg blog Qa1 Shock Numbers at Mitchell Trigg blog. 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. Ideal for classes that require stock shock mounting locations to be retained Racer rebuildable and revalveable Multiple valving curve and gas charging options Made in the USA Every QA1 shock is dyno tested and serialized to guarantee peak performance Attributes: Brand Name: QA1 GTIN: 00806990115256 Active or Passive Suspension: Passive Adjustable Compression: No Adjustable Rebound: No Adjustable Ride Height: No Bladder(s) Included: No Body Color: Silver Body Diameter: 2 Body Material: Steel Boot Included: No Coil Spring Insulator(s) Included: No Color: Silver Cylinder Finish: Zinc Plated Dust Shield Included: No Finish: Zinc Plated Gas Charged: Yes Grade Type: Performance Hydraulic Lockout: No Internal Construction Type: Single Tube Manufacturer Part Number: 27A584M Mounting Hardware Included: No Remote Reservoir: No Rod Diameter: 0. 625 Self Leveling: No Shaft Material: Carbon Steel UPC: 806990115256 Extended Information: Country of Origin: US Emissions : Emissions Compliance Exempt Packing Information: Quantity of Each: 1 Package UOM: EA Dimension: 30. 5 x 3. 5 x 3. 5 inches Weight: 4. 4 POUNDS