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Amazon.com: Trigger Shifter 1 Pair 22.2mm For SL-TX30-7 Mountain Bike Cycling Bicycle Accessories 6.7/21 Speed Transmission Split Dial : Sports & Outdoors
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Amazon.com: SOONHUA Bike Speed Shifter,TX-30 Right Thumb Gear Shifter,1 Pair Mountain Bicycle Gear Shifters 3X7 Speed Shift Lever and Set with Gear Indicator for Road Bike,MTB : Sports & Outdoors
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3x7 Gears 21 Speed Mountain Bike Cycling Thumb Gear Trigger Shifter Left Right Set with Inner Cables for Mountain Bicycle (One Pair) - Walmart.com
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