RaceFace Narrow Wide Direct Mount CINCH Aluminum Chainring - Shimano 12-Speed requires Hyperglide+ compatible chain 34t BLK ModelNumber=D1283 }Shimano Dura-Ace BR-R9170 Brake Caliper

}Shimano Dura-Ace BR-R9170 Brake Caliper Fixing Bolt C for 25mm Thick Chainstay

delivers speeds around 20mph

Some notes:

}Shimano CN-6600-10 Chain - 10-Speed 116 Links Silver/Gray

RaceFace Narrow Wide Direct Mount CINCH Aluminum Chainring - Shimano 12-Speed requires Hyperglide+ compatible chain 34t BLK ModelNumber=D1283 }Shimano Dura-Ace BR-R9170 Brake CaliperRaceFace Narrow Wide Direct Mount CINCH Aluminum Chainring for Shimano 12 Speed requires Hyperglide+ compatible chain 34t Black. Narrow Wide Direct Mount CINCH Hyperglide+ ChainringOnly compatible with Hyperglide + chains Designed for use with 12 speed Shimano drivetrains Narrow Wide tooth profiling ensures consistent chain retention TECH SPECS Ring Position Type Chain Retaining Single Ring Tooth Count 34 Round or Oval Round Drivetrain Speeds 12