QA1 6Q83-9R 6Q Series Rebound Adjustable Twin Tube Circle Track Shock 8in Stroke

The QA1 6Q83-9R is a rebound-adjustable, large-body aluminum twin tube shock designed for serious circle track racing. Part of QA1's 6Q Series — formerly known as the 60 and 62 series — this shock delivers the performance, consistency, and tunability that late model, dirt modified, asphalt modified, and sprint car racers demand. With an 8-inch stroke and 22-1/4-inch eye-to-eye length, it is offered with 3C compression and 9-step rebound adjustability for precise trackside tuning.

Key Features:

• Twin tube, large-body design — 2-inch threaded aluminum body with black anodized finish for durability and easy identification
• Rebound adjustable valving — 9-step rebound adjustment lets racers dial in shock behavior at the track without disassembly
• Coilover compatible — threaded body works directly with QA1 coilover kits (CK6Q00 or CK6Q01, sold separately) for 2-1/2-inch ID springs
• High-quality raw aluminum pistons — maximize consistency lap after lap
• Scalloped base loop — increases clearance in tight mounting areas such as upper control arms and shock towers
• Hyper screw port gland with relief cuts — makes filling and bleeding the shock quick and easy during assembly
• Upgraded seal kit — minimizes fluid leakage, especially critical in high-rebound applications
• Slip-fit compression tube — simplifies the rebuild process for fast turnaround
• Laser-engraved, black-anodized closure nuts — serial numbers and valving specs remain legible at the track or in the shop
• User rebuildable and revalvable — rebuild and re-valve kits available separately; compatible with bleed shims or drilled bleeds for maximum tunability
• Bearing eyelet mounts — available in 6-, 7-, 8-, and 9-inch bearing mount configurations across the 6Q lineup

Ideal for Late Models, Asphalt Modifieds, and Sprint Cars, the QA1 6Q83-9R gives racers full control over suspension tuning. Compatible coilover spring kits: CK6Q00 (standard billet, 2-1/2-inch ID) and CK6Q01 (billet, 2-1/2-inch ID). Rebuild and revalve kits sold separately.