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Sram Red eTap WiFli 11-Speed Electronic Rim Brake Mini Groupset Upgrade Kit | eBay
SRAM RED eTap Disc Upgrade-Kit - S-TEC sports
SRAM Red ETAP WiFLi Upgrade Kit (Rear Derailleur & Battery, XG-1190 11-32 Cassette, PC Red22 Chain) TotalCycling.com
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