MEROCA Bicycle Rear Derailleur Guide Wheel Support 7-12Speed 11/13T Aluminum Alloy sprocket wheel For Shimano Sram MTB Road Bike

Note: For the purchase of 11T and 13T, 13T is usually as choose for long-tail rear, otherwise 11T guide wheels are used. Brand: MEROCA Name: Rear guide wheel Material: 7075 high-strength aluminum alloy + Metal Palin Size: 11T diameter of about 41mm, 13T diameter of about 49mm Specification: Guide wheel with 4/5 / 6mm shaft Weight: 11 T 6.9g 13 T 8.8g Guide wheel selection rules: Please try to use the same size as the original guide wheel. There is no difference, you can choose smaller than the original guide wheel, but you can't choose a big one Note: the price is a price 7075 aluminum alloy material, one price. Support most dialing on the market, support 7/8/9/10 speed! Selection principles: 1: Use the same size as the original guide wheel as much as possible, and there is no difference. You can choose smaller than the original guide wheel, and you can't use large ones. 2: the guide wheel and the tension wheel are not different. Some original rear guide wheels and the idler pulley are not the same in size and can be replaced. It is necessary to re-adjust the length of the chain.