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Specs & Information
- Fits Shimano R9100-generation Dura-Ace and R8000-generation Ultegra rear derailleurs
- CNC machined from 6061-T6 aluminum with stainless steel bolt
- Does not change the derailleurs total chain wrap capacity
- Fits standard derailleur hangers only
- Best used with Single or Double Setups - see manufacturer's site for more details
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