Features Shimano Dura Ace CS-R9200 11-34T CassetteSpeed was the mainspring in the development of this next generation road bike 12 speed groupset. Several years of research produced those innovations that make the Shimano Dura Ace R9200 even faster. DURA-ACE HYPERGLIDE 12-speed road sprocket cassetteThe seamless shifting experience of the DURA-ACE R9200 12-speed cassette range lets you climb, sprint and push your limits without stopping to think about your next gear change. Larger sprockets maximize drivetrain efficiency and create compatibility with Shimano's 11- and 12-speed FREEHUB hub bodies.HYPERGLIDE cassettes have revolutionized off-road gear shifting with their smooth shifting in both upshift and downshift. Now is the time for technology to change road cycling. Even during peak efforts on a climb or near the finish line, riders no longer need to back up to shift.In any gear, DURA-ACE R9250 drivetrains maximize efficiency thanks to larger sprockets while maintaining compatibility with existing 11-speed rear hub bodies. All this increasing to 12 gears and without increasing the weight, the DURA-ACE CS-R9200 cassettes are the new paradigm in road derailleur.FEATURES

• Faster, smoother shifting under maximum pedaling load
• Refined 12-step gear combination provides maximum efficiency and throttle performance for every situation
• Adds the wider specification of 34D for professional use

• Compatible with the new road 11-speed and 12-speed REAR HUB body

PRODUCT SPECIFICATIONSMODEL NO.CS-R9200-12SERIEDURA-ACE R9200 SeriesMiddleweight223 (11-30D) 253 (11-34D)Combination11-12-13-14-15-16-17-19*-21*-24*-27*-30*D | 11-12-13-14-15-17-19*-21*-24*-27*-30*-34*DCombination Name (Group Name)11-30D 11-34DGuyHYPERGLIDE compatible chainHG 12 speedrear speeds12Aluminum Gear_Quantity (Pieces)0Aluminum crosshead_Quantity (pieces)twoSpline type_HG spline L2 (ROAD 12-speed dedicated)✔Steel Gear_Quantity (Pieces)7 (11-30D), 6 (11-34D)Titanium Gear_Quantity (Pieces)5 (11-30D), 6 (11-34D)