QA1 6Q55 Twin Tube Large Body Circle Track Shock 5 Inch Stroke

The QA1 6Q55 is a rebuildable twin-tube large body circle track shock engineered for racers who demand performance, consistency, and tunability. Part of the proven 6Q Series (formerly known as 60 and 62 series), this aluminum-bodied shock features a 5-inch stroke and is designed specifically for competitive racing applications where adjustability and serviceability are critical.

Key Features:

• Large aluminum body construction with threaded design for easy coil-over configurations
• 5-inch stroke length provides balanced travel for circle track applications
• Twin-tube design delivers consistent damping performance lap after lap
• Rebuildable and re-valvable in minutes using basic tools—no need to send shocks out for service
• High-quality raw aluminum pistons maximize consistency and can be tuned with bleed shims or drilled bleeds
• Scalloped base loop design increases clearance in tight areas like upper control arms and shock mounts
• Two-piece body construction simplifies disassembly and reassembly
• Gland features relief cuts and hyper screw port for easy filling and bleeding during assembly
• Laser-engraved black-anodized closure nut makes serial numbers and valving easy to read at the track
• Upgraded seal kit minimizes leaks, especially in high-rebound applications
• Compatible with QA1 coil-over kits (sold separately)

The 6Q55 gives racers the ability to fine-tune their suspension setup trackside without specialized tools or lengthy rebuilds. Whether you're dialing in handling for oval track competition or need a reliable shock that can be quickly serviced between races, the QA1 6Q55 delivers professional-grade performance with racer-friendly serviceability.