TheSRAM MRX 7 Speed Twist Shifteris versatile, whether your ride of choice includes gently rolling terrain or fast downhill descents, the MRX will follow you there with crisp, positive response on your shifts. SRAM MRX 7 Speed Twist ShifterFeatures Twist shifting at its best and highest performance 1:2 pull ratio – Shimano compatible Rear 2:1 Fits Shimano: 7 Speed
Best Price: £11.00 from Leisure Lakes Bikes