QA1 27684-2M 27 Series Monotube Stock Mount Shock Absorber T-Bar/Poly 4C/2R Linear

The QA1 27684-2M is part of QA1's 27 Series — a stock mount monotube shock absorber designed for circle track and performance street applications. Built as an evolution of QA1's proven 26 Series platform, the 27 Series adds a stock mount configuration, making it a popular choice for street stocks, hobby stocks, mini stocks, and other classes that require a stock mount shock.

This shock features a zinc-plated steel body for corrosion resistance, a 46mm hard anodized piston, and a Hyperscrew adjuster for on-car valving changes. The 27684-2M is configured with a T-bar upper mount and polyurethane bushing lower mount, with a compressed length of 13.35 inches and an extended length of 22.55 inches. Valving is set at 4 compression / 2 rebound (4C/2R) using QA1's linear valving profile.

Key Features:

• Stock mount monotube design — direct-fit replacement for OEM shock mounts
• 46mm hard anodized piston for precise, consistent damping
• Zinc-plated body for enhanced corrosion resistance
• Linear valving (4C/2R) — provides a stable, predictable handling balance
• T-bar upper / polyurethane bushing lower mount configuration
• Hyperscrew adjuster — allows valving adjustments without removal
• Deflective disc valving — controls suspension at low shaft speeds without generating extreme forces at high shaft velocities
• 100% dyno tested and serialized at the factory
• Made in the USA — manufactured in Lakeville, MN
• Racer revalveable and rebuildable for long service life

QA1's premium proprietary shock fluid resists fade under race conditions, ensuring consistent damping performance lap after lap. The 27684-2M is an excellent choice for competitors seeking a reliable, affordable monotube shock in a stock mount package.