Shimano RevoShift 21 Speed Shifter Set is the outstanding product. Right/Left Revoshift 21 Speed Shifter Set. NEW Shimano RD-TZ31-A 6/7 Speed Direct Mount MTB Mountain Bike Rear Derailleur. Shimano ST-EF51 Shifters / Brake Levers Combo 3/7/8/3x7/8 Spee With Gear Cable.
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