NEW SRAM MRX COMP 6 SPEED TRIPLE RIGHT REAR GRIP TWIST SHIFTER | eBay
SRAM MRX Comp 3x7 Grip Shift 21-Speed Bike Twist Shifter Set Cables fits ShimanoRear shifter has a 2:1 actuation ratio which is compatible with Shimano.., By ZEERMENG - Walmart.com