** On Sale While Supplies Last **
The best keep getting better! We've taken your feedback, added new technology and developed an improved 50 Series shock absorber - the 51 Series. QA1’s 51 Series features a brand new in-house machined body, which has a large inside diameter for easy installation of gas bags. The 51 Series is the premium twin tube choice for dirt and asphalt modifieds, late models and super stocks.
• Available in seven and nine inch strokes
• Racer revalveable & rebuildable
• Twin Tube Shock Absorber features hard anodized internals
• Steel Large Body style
• Zero gas pressure design provides great grip on slick tracks and an outstanding feel
• Premium Aluminum piston - dual bleed circuits for standard or custom valvings
• Premium proprietary blend of specially engineered oil prevents fading
• 15mm centerless ground, hard chrome plated, solid piston rod
• Deflective disk valving allows control of suspension at low shaft speeds without creating extreme forces at high shaft velocities
• Can run upside down with no rate change to reduce unsprung weight
• Replaceable 1/2" I.D. bearings
• 100% Dyno tested & serialized
Additional Piston Option: QA1 also offers a brand new high-flow linear two port piston for the 51 Series as an additional accessory. This two port piston design allows the valve discs to open consistently which results in a smoother force curve and accommodates independent compression and rebound bleed circuits for precision low-speed force control.
Starting at$123.99Reg: $124.99
Details
Conventional Springs are high-performance, aftermarket suspension springs primarily used in motorsports and motor racing. The outer diameter size and free length, along with Hyperco’s Dynamic Travel Response™ spring design, allow for optimization of the total vehicle performance on many Circle Track vehicles and applications.
• More usable deflection
• Less weight than standard suspension springs
• Designed to fit all standard hardware
• Maintain free length and rate throughout a near infinite operational life
• Free length range: 5” to 20”
• Spring rates: 100 lb/in to 250 lb/in
• Material: High tensile chrome silicone
• Finish: Hyperco Dark Blue powder coat
Starting at$67.89Reg: $96.99
Details
Conventional Springs are high-performance, aftermarket suspension springs primarily used in motorsports and motor racing. The outer diameter size and free length, along with Hyperco’s Dynamic Travel Response™ spring design, allow for optimization of the total vehicle performance on many Circle Track vehicles and applications.
• More usable deflection
• Less weight than standard suspension springs
• Designed to fit all standard hardware
• Maintain free length and rate throughout a near infinite operational life
• Free length: 12”
• Spring rates: 175 lb/in to 300 lb/in
• Material: High tensile chrome silicone
• Finish: Semi-gloss black powder coat for OE appearance
Starting at$64.39Reg: $91.99
Details
Conventional Springs are high-performance, aftermarket suspension springs primarily used in motorsports and motor racing. The outer diameter size and free length, along with Hyperco’s Dynamic Travel Response™ spring design, allow for optimization of the total vehicle performance on many Circle Track vehicles and applications.
• More usable deflection
• Less weight than standard suspension springs
• Designed to fit all standard hardware
• Maintain free length and rate throughout a near infinite operational life
• Free length range: 5” to 20”
• Spring rates: 150 lb/in to 250 lb/in
• Material: High tensile chrome silicone
• Finish: Hyperco Dark Blue powder coat
Starting at$60.89Reg: $86.99
Details
Conventional Springs are high-performance, aftermarket suspension springs primarily used in motorsports and motor racing. The outer diameter size and free length, along with Hyperco’s Dynamic Travel Response™ spring design, allow for optimization of the total vehicle performance on many Circle Track vehicles and applications.
• More usable deflection
• Less weight than standard suspension springs
• Designed to fit all standard hardware
• Maintain free length and rate throughout a near infinite operational life
• Free length: 11”
• Spring rates: 800 lb/in to 1300 lb/in
• Material: High tensile chrome silicone
• Finish: Semi-gloss black powder coat for OE appearance
Starting at$57.39Reg: $81.99
Details
Conventional Springs are high-performance, aftermarket suspension springs primarily used in motorsports and motor racing. The outer diameter size and free length, along with Hyperco’s Dynamic Travel Response™ spring design, allow for optimization of the total vehicle performance on many Circle Track vehicles and applications.
• More usable deflection
• Less weight than standard suspension springs
• Designed to fit all standard hardware
• Maintain free length and rate throughout a near infinite operational life
• Free length: 12”
• Spring rates: 800 lb/in to 1300 lb/in
• Material: High tensile chrome silicone
• Finish: Semi-gloss black powder coat for OE appearance
Starting at$57.39Reg: $81.99
Details