Bonamici Racing Chain Adjuster For Yamaha YZF-R9 (Tracer 9 / XSR900 Swingarm Conversion)

Description

NOTE: This is a special order product from Bonamici Racing with a 30-45 day lead time. Developed specifically for high-level racing applications, the Bonamici Racing Chain Adjuster is engineered for Yamaha YZF-R9 motorcycles fitted with the Yamaha Tracer 9 / XSR900 swingarm conversion (OEM swingarm code B5U221100000). Designed with track performance in mind, this premium system delivers precision adjustment, rapid servicing capability, and race-proven durability. Created to suit the geometry of the longer Tracer 9 / XSR900 swingarm setup, this racing-focused solution has been designed to meet the demands of professional teams and dedicated track riders seeking improved chassis performance and faster pit lane operation. The system incorporates a specialised quick-release axle arrangement that simplifies rear wheel removal and installation during race conditions. Precision CNC machining and premium materials ensure excellent strength, reliability, and consistent performance under extreme use. Purpose-built for Yamaha YZF-R9 race and track motorcycles Designed for use with Yamaha Tracer 9 / XSR900 swingarm conversion Compatible with OEM swingarm code B5U221100000 Developed exclusively for racing and closed-course use Quick-removal rear axle system for efficient wheel servicing Axle manufactured from solid CNC-machined 39NiCrMo3 steel Internal lapping process improves machining precision and fitment accuracy Protective phosphated surface treatment for enhanced durability M24x1.5 thread configuration Recessed hex-drive axle head allows rapid tightening and removal Left-hand side designed for direct axle insertion Right-hand adjuster integrates threaded axle fastening without requiring a separate nut Integrated support bracket for OEM Yamaha YZF-R9 rear brake caliper Compatible only with genuine Yamaha YZF-R9 rear brake calipers Fitment Information: This product has been developed specifically for Yamaha YZF-R9 motorcycles using the Yamaha Tracer 9 / XSR900 swingarm conversion. It is not compatible with Yamaha MT-09 swingarm configurations. Compatible Bikes: Yamaha YZF R9 2025-