QA1 27A945M 27 Series Stock Mount Monotube Steel Shock 9.17/14.0 Stud/T-Bar 5M IMCA Sealed

The QA1 27A945M is a stock mount monotube racing shock absorber from QA1's 27 Series — a purpose-built circle track shock designed for both dirt and asphalt racing. Built as an IMCA-legal sealed version of QA1's proven 26 Series platform, this shock delivers consistent, repeatable performance in a stock mount package.

Key Features:

• Steel monotube construction with a zinc-plated body for excellent corrosion resistance
• 46mm hard anodized piston for maximum car control across all shaft velocities
• Sealed Hyperscrew (27A Series) — gas pressure is sealed and adjustable only by QA1 or QA1 Authorized Rebuilders, making it IMCA Southern Sport Mod legal
• Linear valving with 5-compression / 5-rebound (5M) tuning — provides a more stable car and improved driver feel
• Compressed height: 9.17 in. / Extended height: 14.0 in.
• Stud top / T-Bar bottom mounting configuration for direct stock mount fitment
• Non-adjustable, gas-charged design for class-legal simplicity
• Rebuildable and revalveable by QA1 or authorized rebuilders
• 100% dyno tested and serialized — Made in the USA

The damping curve is engineered to allow complete control of suspension at low shaft speeds without creating extreme forces at high shaft velocities. Linear valving promotes a predictable, balanced setup well-suited to street stocks, hobby stocks, mini stocks, and other classes requiring stock mount shocks. Popular on both dirt and asphalt tracks, the 27A Series is a go-to choice for racers competing under IMCA and similar sanctioning body rules.