QA1 Precision Products 6Q64-400R Rebound Adjustable Circle Track Shock 6" Stroke Twin Tube

The QA1 6Q64-400R is a high-performance rebound adjustable twin tube shock absorber designed specifically for circle track racing applications. Featuring a 6-inch stroke with 4C/400R valving (4 compression, 400 digressive rebound), this shock delivers exceptional performance and tunability for dirt and asphalt tracks where precise suspension control is critical.

Key Features:

• Large-body aluminum construction with threaded body for easy coil-over configurations
• Rebound adjustability allows racers to dial in valving at the track for optimal performance
• Racer rebuildable and revalveable in minutes using basic tools
• High-quality raw aluminum pistons maximize consistency and performance
• Scalloped base loop design increases clearance in tight areas like upper control arms and shock mounts
• Twin tube design provides excellent feel and grip across all track conditions
• Gland features relief cuts and hyper screw port for easy filling and bleeding during assembly
• Upgraded seal kit minimizes leaks, especially in high-rebound applications
• Compression tube uses slip-fit design to simplify rebuild process
• 100% dyno tested and serialized for quality assurance

Formerly known as the 60 and 62 series, the 6Q series shocks offer racers the perfect balance of performance, consistency, and tunability. The deflective disc valving can be customized with bleed shims or drilled bleeds to maximize adjustability. Whether you're running late models, modifieds, or other circle track classes, the 6Q64-400R delivers the control and performance needed to compete at the highest level.