QA1 27A946-4M 27 Series IMCA Sealed Monotube Shock Absorber 9.17 Compressed / 14.0 Extended Stud/T-Bar 4M Valving

The QA1 27A946-4M is a large steel stock mount monotube shock absorber from QA1's 27A Series — the IMCA-legal, Sealed Hyperscrew variant of the popular 27 Series line. Designed for circle track competitors running street stocks, hobby stocks, mini stocks, and other classes mandating a stock mount shock, this unit delivers race-proven monotube performance in a legal, sealed package.

Key Specifications:

• Compressed Height: 9.17 in.
• Extended Height: 14.0 in.
• Body Material: Large steel, zinc plated for corrosion resistance
• Piston: 46mm hard anodized
• Top Mount: Stud
• Bottom Mount: T-Bar
• Valving: 6-4M (linear)
• Hyperscrew Type: Sealed Hyperscrew — IMCA & Southern Sport Mod legal

Performance Features:

• Monotube design provides superior heat dissipation and consistent damping performance on the track
• Linear valving delivers a stable, predictable damping curve — allowing the driver to feel the car more accurately
• Damping curve engineered for complete suspension control at low shaft speeds without generating extreme forces at high shaft velocities
• Racer revalveable and rebuildable for long-term serviceability and repeatability
• Zinc-plated steel body provides excellent corrosion resistance for demanding race environments
• 100% dyno tested and serialized for verified, consistent performance out of the box
• Made in the USA at QA1's manufacturing facility in Lakeville, MN

The 27A Series builds on QA1's trusted 26 Series platform, adding the stock mount configuration demanded by many sanctioning bodies. The sealed Hyperscrew design makes this shock fully compliant for IMCA and Southern Sport Mod classes. Whether you're campaigning a street stock or hobby stock, the 27A946-4M delivers the control and consistency needed to stay competitive lap after lap.