Brand: SHIMANO

Name: Bicycle speed adjustment

Model: RS31-6 speed RS31-7 speed

Caliber: 22.2mm

Suitable for: mountain bikes/city bikes/recreational vehicles/road bikes/folding bikes

Standard configuration: equipped with variable speed stainless steel wire core, left 1800mm, right 2040mm, wireless tube

Optional configuration: short sleeve, if the original equipment is long, it needs to be replaced with a short one

Material: high quality plastic

Weight: 6-speed approximately 237 grams, 7-speed approximately 246 grams

Number of gears: front 3 speeds + rear 6 speeds = 18 speeds Front 3 speeds + rear 7 speeds = 21 speeds

Package includes：

 The parcel will be sent according to the option you choose. Please confirm whether the option is the speed you want before placing the order. Thank you