Shimano RD-R9250 Rear Derailleur Dura-Ace Di2 12-Speed comfort Compression straps

Compression straps

Premium lightweight E5 Aluminum frame

2mm up to 35mm in diameter

2020 S-Works Stumpjumper 29 Frameset

Shimano RD-R9250 Rear Derailleur Dura-Ace Di2 12-Speed comfort Compression strapsOur fastest ever shifting across SHIMANO's widest ever DURA ACE gear range, the RD R9250 is capable of both race wins and personal bests. The DURA ACE RD R9250 integrates the system charging port and a wireless connectivity unit all while delivering super fast, precise shifting worth of any podium. A single cage length that is compatible with 28 34T low sprockets brings new versatility to the world's best road component group Our fastest ever rear