SHIMANO XTR Rear Derailleur Upgrade kit (Di2 spec.) GS Clamp band

SHIMANO XTR Di2 Upgrade Kit M9250 — Medium Cage / Clamp (Rewritten Version) The XTR M9200 series marks Shimano’s return to Di2 shifting at the top tier, bringing a modern wireless system, exceptional reliability, and the crisp performance expected from their flagship components. With 12‑speed operation, refined ergonomics, and premium construction, this upgrade kit lets riders experience cutting‑edge electronic shifting without replacing their entire drivetrain. If you already run a Shimano 12‑speed setup, this kit provides everything needed to step into wireless Di2 functionality immediately. XTR Di2 Shifter SW‑M9250‑R — 12‑Speed, Clamp Mount Electronic shifting offers instant, effortless gear changes with a simple button press. The XTR Di2 shifter uses Shimano’s Rapid ES technology to deliver precise actuation and a confident tactile feel. Rubberized buttons and adjustable ergonomics ensure secure control even on rough terrain. Communication with the rear derailleur is fully wireless via Bluetooth®, eliminating cable routing and simplifying installation. Through the Shimano E‑Tube app, riders can customize button functions, choose between single or multi‑shift modes, and even assign a secondary button to control compatible bike computers. XTR Di2 Rear Derailleur RD‑M9250‑GS — 12‑Speed, Medium Cage The XTR Di2 rear derailleur brings fast, accurate shifting and extremely quiet operation, especially when paired with Hyperglide+ cassettes. Shimano’s updated Shadow ES chain‑stabilization design keeps the derailleur compact and reduces chain slap on demanding trails. A slimmer, wedge‑shaped profile increases ground clearance by 23 mm and helps deflect impacts. The RD protection mechanism allows the cage to move inward when struck and then automatically return to position—so quickly that the rider barely notices. Closed pulley wheels help prevent debris buildup, and the mix of aluminum and carbon keeps weight impressively low. BT‑DN320 Battery — For XTR Di2 RD‑M9250 Unlike previous Di2 systems, the new generation uses a derailleur‑mounted battery instead of a centralized power source. This removes the need for internal wiring and makes setup far easier. The compact 305 mAh battery fits directly into the derailleur, staying hidden and protected while supplying consistent power. Despite its sealed design, it can be removed quickly for charging. EC‑EN100 Charger — For BT‑DN320 Battery The EC‑EN100 charger replenishes the BT‑DN320 battery using smart charging logic that helps extend long‑term battery health. The included USB‑C cable works with standard smartphone charging adapters. Technical Specifications Use: Cross‑country Materials: Aluminum, carbon, composite plastics Gearing: 12‑speed Shifter Mount: Right‑side clamp Recommended Cassette Range: 9–45T / 10–45T Color: Grey, black, silver Weight (self‑measured): 493 g Manufacturer weight: Not available