KCNC Bicycle Lightweight Derailleur Parts with Jockey 11T Pulley Built-in Bearings, Wheel,

---------------------------------------------------------------------- 【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction. 【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary. 【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product. 【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. ----------------------------------------------------------------------

9/10/11 For speed Material: CNC machined 7075 aluminum alloy Bearings: Stainless steel Compatibility: Shimano, Campagnolo, and SRAM 9/10/11 speed derailleurs (not compatible with SRAM guide pulleys). Smooth rotation thanks to ball bearings. Compared to resin pulleys, it has higher rigidity and does not lose power. Ideal for upgrading bushing-type derailleurs found on mid-range and earlier models. Can be used for both the guide pulley (upper) and the tension pulley (lower). We recommend using the tooth count that comes standard with your derailleur. *After installation, please be sure to check the gear shifting operation on a test stand before riding. If the derailleur hanger or other parts are bent, the chain may come off, potentially damaging the frame, rear derailleur, etc.