REBUILD KIT LARGE BODY

The QA1 Rebuild Kit Large Body (model RK13) is a professional-grade seal and bushing replacement assembly designed for high-performance coilover suspension systems and adjustable dampers that demand precision and reliability. If you're maintaining or rebuilding a QA1 large-body shock absorber—whether on a street-tuned muscle car, autocross competitor, or road-course platform—this rebuild kit provides OEM-equivalent components to restore full damping integrity and eliminate oil seepage or performance degradation. This compact service kit is essential for suspension technicians and serious enthusiasts who refuse to compromise on handling responsiveness or seal longevity.

The rebuild kit contains precision-machined seals, o-rings, and internal bushings engineered to OEM specifications for QA1's large-body monotube and dual-tube shock platforms. These components work together to eliminate internal friction variability, maintain consistent oil retention, and restore the damper's ability to respond predictably across compression and rebound cycles. The kit's compact 4 x 6.88-inch package weighs only 0.1 pounds, making it easy to store in your garage or shop cabinet; the small footprint belies the critical role these precision seals play in preserving ride quality and suspension geometry under cornering loads or track abuse.

Street and track builders benefit most from this rebuild kit when refreshing aging suspension systems or performing preventive maintenance on competition vehicles where damper performance directly affects lap times and driver confidence. Installation requires basic mechanical skill and access to a shock press or specialized QA1 disassembly tooling; many suspension shops offer rebuild services using this kit, or experienced DIY mechanics can tackle the job at home. Verify your shock absorber's body size and internal architecture against QA1's product documentation to ensure compatibility—the "large body" designation applies specifically to QA1's full-size monotube and twin-tube platforms, not their compact or remote-reservoir designs.