QA1 5Q933-5 Twin Tube Circle Track Shock Large Body Steel 8.63

The QA1 5Q933-5 is a large body twin-tube steel shock designed for circle track racing applications. Part of QA1's proven 5Q Series (formerly known as 51 and 53 series), this stock mount shock features a robust steel construction with an 8.63-inch dimension and a 3C/5R valving configuration ideal for GM mid-size front suspension applications.

Key Features:

• Large body twin-tube design provides excellent tire feel and exceptional traction on slippery tracks
• Two-piece body construction allows racers to rebuild and re-valve shocks in minutes using basic tools
• Black zinc coating ensures consistent finish and tight sealing performance
• Scalloped base loop design increases clearance in tight areas like upper control arms and shock mounts
• High-quality raw aluminum pistons minimize variations found in anodized parts
• Laser-engraved, black-anodized closure nut makes serial numbers and valving easy to read at the track
• 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
• Slip-fit compression tube design simplifies the rebuild process
• Fully tunable—valve with bleed shims or drill out bleeds to maximize performance

The 5Q Series shocks are manufactured in-house for superior durability and strength, and can be used in coil-over configurations with appropriate kits sold separately. Racers can rebuild and re-valve using available QA1 tuning and rebuild kits for ultimate track-side adjustability.