QA1 27689-4M 27 Series Monotube Shock Absorber 13.35" Collapsed / 22.55" Extended T-Bar/Poly Bushings

The QA1 27689-4M is part of QA1's 27 Series — a stock-mount, monotube shock absorber designed for performance street and racing applications. Built as a direct evolution of QA1's proven 26 Series platform, the 27 Series delivers improved damping performance and durability in a familiar stock-mount package.

This shock features a zinc-plated steel body for corrosion resistance and a 46mm hard-anodized piston for reduced friction and extended service life. The monotube design separates the oil and gas charges, resulting in more consistent damping performance and improved heat dissipation compared to twin-tube designs. This unit comes valved at position 4M and is fitted with T-bar and polyurethane bushings for secure, low-maintenance mounting.

Key Features:

• 27 Series stock-mount monotube design
• Zinc-plated steel body for corrosion resistance
• 46mm hard-anodized aluminum piston
• Collapsed length: 13.35 inches
• Extended length: 22.55 inches
• T-bar upper mount / polyurethane lower bushing
• Valving code: 4M (medium valving)
• Multiple valving options available for tuning flexibility
• Monotube construction for consistent, fade-resistant damping
• Direct replacement for OEM-style mounting locations

The QA1 27 Series shock absorber is an excellent upgrade for enthusiasts seeking improved handling and ride control without modifying existing mounting points. QA1's monotube technology provides superior heat management and consistent performance under demanding street and track conditions.