Kit includes Rear derailleur and shifter, battery, charger and QUICK-LINK
Works with the bike's current crankset, cassette and chain
Easiest and most economical way to upgrade a bicycle to Di2
Optimized for impact survivability, the 12-speed mid-cage M9250 rear derailleur is the choice for both Shimano's top enduro athletes and weight conscious XC racers alike.
Featuring all-new wireless Di2 shifting
Automatic impact recovery
Redesigned shape with additional ground clearance
Wide link structure, skid-plate, durable carbon plate and solid pulley
Protected Battery tucked safely inside an enclosed space
Familiar fit and multi-axis adjustability
Shimano's most natural-feeling shifter
Precise, lightning-quick wireless shifting
Features a customizable, and satisfyingly tactile shifting switch
Assign a function to the programmable third button
Tech-packed, with a four-way adjust
Choose between two-step double shift or hold down multi-shift
Rubber traction pad
I-SPEC EV mount or 22.2 band clamp and single/double mode converter
Mid cage / GS for 9 - 45T
Long cage / SGS for 10 -51T
Each kit includes one each of the following: RD-M9250, SW-M9250, BT-DN320, EC-DN100 and SM-CN910-12
PLEASE NOTE: CS-M9200 is compatible with the MICRO SPLINE FREEHUB body standard. 9-45T is compatible with MICRO SPLINE FREEHUB standards and mounts with the use of a special lockring tool (TL-LR021).
California Prop 65 Warning:
This product may contain chemicals known to the state of California to cause cancer and birth defects or other reproductive harm. (California law requires this warning be given to customers in the state of California.)
California CBE Fees:
Some products we sell may be subject to California’s Covered Battery-Embedded (CBE) Waste Recycling Fee (effective January 1, 2026) when a product contains a non-removable rechargeable battery. If applicable, the fee (1.5% fee with a $15 max per item) will either be added to your cart as a separate line item or be invoiced after your order is placed and before it can be fulfilled.
