QA1 5Q99-1 Twin Tube Circle Track Shock Absorber 9-Inch Stroke Bearing Mount

The QA1 5Q99-1 is a large body steel twin-tube shock absorber engineered for circle track racing applications. Featuring a 9-inch stroke length with bearing mount configuration, this shock delivers the performance and consistency demanded by competitive racers in Street Stock, Hobby Stock, B-Mod/Sport Mod, and Modified classes.

Key Features:

• Large body steel construction, formerly known as 51 and 53 series shocks
• 9C/1R valving configuration optimized for circle track performance
• Two-piece body design for simple disassembly and rebuild, with gland relief cuts and hyper screw port for easy filling and bleeding
• Upgraded seal kit minimizes leaks in high-rebound applications
• Laser-engraved, black-anodized closure nut for easy identification of serial numbers and valving
• Black zinc coating ensures consistent finish and tight seal
• Scalloped base loop increases clearance in tight mounting areas
• High-quality raw aluminum pistons minimize performance variations

Tunability and Serviceability:

• Racers can rebuild and re-valve shocks in minutes using basic tools and available tuning kits
• Adjustable with bleed shims or drilled bleeds for maximum tunability
• Compression tube uses slip fit design to simplify rebuild process
• Compatible with coil-over configurations using appropriate kits (sold separately)

Bearing mount configuration with 15.38-inch compressed length. The 5Q Series provides racers with professional-grade performance and the flexibility to fine-tune suspension setup at the track for optimal handling and consistency.