QA1 5Q74-650R 5Q Series Twin-Tube Rebound Adjustable Circle Track Shock, Large Steel Body, 7in. Stroke, 5C/650R

The QA1 5Q74-650R is a large-body steel twin-tube shock absorber from QA1's 5Q Series, engineered specifically for circle track racing applications. Formerly known as the 51 and 53 Series, the 5Q line delivers the performance, consistency, and on-track tunability that serious racers demand. This shock features a 7-inch stroke with a bearing mount configuration and is valved at 5C/650R with a rebound-adjustable piston rod, allowing competitors to fine-tune damping characteristics right at the track.

Key Features:

• Rebound Adjustable: Piston rod allows valving adjustments at the track without disassembly
• Rebuildable Two-Piece Body: Simple to disassemble and reassemble using basic tools in minutes
• Hyper Screw Port Gland: Relief cuts and hyper screw port design make shocks easy to fill and bleed during assembly
• Upgraded Seal Kit: Minimizes leaks, especially in high-rebound applications
• Slip-Fit Compression Tube: Simplifies the rebuild process
• Laser-Engraved, Black-Anodized Closure Nut: Makes serial numbers and valving easy to read at the track or in the shop
• Black Zinc Coating: Ensures a consistent finish and tight seal
• Scalloped Base Loop: Increases clearance in tight areas such as upper control arms and shock mounts
• Raw Aluminum Pistons: High-quality construction minimizes variation compared to anodized parts
• Bleed Shim Tunability: Valve with bleed shims or drill out bleeds to maximize performance tuning
• Coilover Compatible: Can be used in coilover configurations with appropriate kits (sold separately)

Suited for Street Stock, Hobby Stock, B-Mod/Sport Mod, and Modified classes, the 5Q74-650R is a proven platform for racers who want the ability to rebuild and re-valve their own shocks using QA1's available tuning and rebuild kits. The 13.38-inch collapsed length and 7-inch stroke bearing mount body make it a versatile choice across a wide range of circle track setups.