QA1 Shock Absorber 27 Series (MPN: 27A684-5M)

High-performance sealed hydraulic mono tube shock for racing applications.

The QA1 Shock Absorber 27 Series is engineered for high-performance racing, featuring a sealed hyperscrew hydraulic mono tube design. With an extended height of 21.81 inches and a compressed height of 13.35 inches, this shock is built for durability and reliability on the track. The electroless nickel plated body provides excellent corrosion resistance and superior hardness, ensuring longevity in demanding conditions.

This shock absorber utilizes deflective disc technology, allowing for precise control of suspension dynamics at low shaft speeds while minimizing extreme forces at high velocities. The linear valving system enhances vehicle stability and driver feedback, making it a valuable component for competitive racing. Additionally, the shock is racer rebuildable and revalveable, offering the flexibility to adjust settings according to specific driving needs.

Designed without shock boots, the QA1 27 Series maintains a clean and efficient profile. The shock features a T-bar upper mount and loop lower mount, making installation straightforward. With its robust construction and advanced engineering, this shock absorber is a reliable choice for racers seeking performance and adaptability.

Features

• Hyperscrew: Threaded Round Port Near The Bearing End Of The Shock Body Is Sealed With A Small Screw
• Deflective Disc Valving: 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
• Non-Fading: QA1 Uses A Premium Proprietary Blend Of Specially Engineered Oil To Prevent Fade
• Racer Revalveable And Rebuildable: Designed For Unparalleled Repeatability
• Electroless Nickel Plated Body: Encapsulates The Base Metal And Completely Seals Out The Elements, Proving Excellent Corrosion Resistance, Superior Hardness, Consistency And Lubricity

Specifications

• Manufacturer: QA1
• Manufacturer Part Number: 27A684-5M
• Type: Hydraulic
• With Coil Spring: No
• Extended Length (IN): 21.81 Inch
• Compressed Length (IN): 13.35 Inch
• Upper Mounting Style: Cross Pin
• Lower Mounting Style: Eyelet
• Adjustable Valving: No
• Quantity: Single
• Universality: Semi-Universal
• Internal Design: Monotube
• Body Color: Silver
• Rod Diameter (IN): 0.59 Inch
• Valving Type: Number 4 Compression And Number 5 Rebound Linear Valving
• Rod Material: Steel
• Body Material: Steel
• With Reservoir: No
• Includes Dust Shield: No
• Includes Hardware: No
• Includes Boot: No
• Estimated Install Time (Hours): 0.5

Compatibility / Fit

• 1973-1973 Buick Apollo
• 1971-1973 Buick Centurion
• 1973-1981 Buick Century
• 1971-1981 Buick Electra
• 1970-1981 Buick Estate Wagon
• 1971-1981 Buick LeSabre
• 1973-1987 Buick Regal
• 1971-1978 Buick Riviera
• 1991-1996 Buick Roadmaster
• 1964-1972 Buick Skylark
• 1964-1969 Buick Special
• 1983-1984 Cadillac Commercial Chassis
• 1977-1984 Cadillac DeVille
• 1965-1975 Chevrolet Bel Air
• 1965-1972 Chevrolet Biscayne
• 1966-1996 Chevrolet Caprice
• 1964-1973 Chevrolet Chevelle
• 1971-1981 Chevrolet Impala
• 1973-1983 Chevrolet Malibu
• 1970-1988 Chevrolet Monte Carlo
• 1973-1973 Chevrolet Nova
• 1964-1971 Oldsmobile 442
• 1971-1984 Oldsmobile 98
• 1971-1976 Oldsmobile Custom Cruiser
• 1964-1981 Oldsmobile Cutlass
• 1978-1984 Oldsmobile Cutlass Calais
• 1980-1983 Oldsmobile Cutlass Cruiser
• 1975-1980 Oldsmobile Cutlass Salon
• 1985-1987 Oldsmobile Cutlass Salon
• 1967-1988 Oldsmobile Cutlass Supreme
• 1976-1976 Oldsmobile Cutlass Tiara
• 1971-1981 Oldsmobile Delta 88
• 1964-1972 Oldsmobile F85
• 1971-1978 Oldsmobile Toronado
• 1973-1975 Oldsmobile Vista Cruiser
• 1963-1964 Pontiac Bonneville
• 1971-1981 Pontiac Bonneville
• 1963-1964 Pontiac Catalina
• 1971-1981 Pontiac Catalina
• 1973-1975 Pontiac Grand Am
• 1978-1980 Pontiac Grand Am
• 1975-1981 Pontiac Grand LeMans
• 1963-1964 Pontiac Grand Prix
• 1969-1987 Pontiac Grand Prix
• 1971-1978 Pontiac Grand Safari
• 1971-1975 Pontiac Grandville
• 1964-1973 Pontiac GTO
• 1970-1981 Pontiac LeMans
• 1987-1989 Pontiac Safari
• 1963-1964 Pontiac Star Chief
• 1964-1970 Pontiac Tempest
• 1973-1974 Pontiac Ventura