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Join Date: Feb 2012
Location: Rochester, NY
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Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
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You could replace the grip shifters with basic friction thumb levers. If you can find indexed ones then the right side could still be indexed. However you might consider going to the Shimano brake/shift intergrated units of the proper index count (3x7). You'll need to maintain the brake cable pull spec to match up with your brakes (which are vee brakes IIRC). These levers will cost around $15 each side and likely have replacement cables with them. Don't forget that the grips will be replaced too, maybe about $10. Can you buy from your LBS? This way they can make sure of the specs matching and if you run into a problem installing the parts they can help you out. Andy.