QA1 6Q64-850R 6Q Series Twin-Tube Shock Absorber 6 Inch Stroke Rebound Adjustable

The QA1 6Q64-850R is a rebuildable twin-tube shock absorber engineered for circle track racing applications where performance, consistency, and tunability are critical. This aluminum large-body shock features 4/850 rebound adjustable valving, allowing racers to dial in suspension settings at the track for optimal handling across varying conditions.

Key Specifications:

• 6-inch stroke bearing mount design
• Extended length: 18.80 inches
• Collapsed length: 12.88 inches
• Body diameter: 2.000 inches
• 4/850 rebound adjustable valving
• Eyelet upper and lower mounts
• Threaded aluminum body for coil-over configurations

Performance Features:

• Rebuildable design allows racers to service and re-valve shocks in minutes using basic tools
• High-quality raw aluminum pistons maximize consistency and minimize performance variations
• Scalloped base loop design increases clearance in tight mounting areas like upper control arms
• Threaded body enables easy coil-over configurations with QA1 kits (sold separately)
• Valving can be customized with bleed shims or drilled bleeds for maximum tunability
• Non-gas charged twin-tube design provides excellent feel and grip across all track conditions

Formerly part of the 60 and 62 Series lineup, the 6Q Series represents QA1's commitment to American-made racing suspension components. Ideal for dirt and asphalt circle track racing in late models, modifieds, and other competitive classes where adjustability and rebuild capability are essential.