Garmin HRM600 Heart Rate Monitor - M-XL Maximum Tire Width-37

Garmin HRM600 Heart Rate Monitor - M-XL Maximum Tire Width-37HRM 600, the premium heart rate monitor, is built for data driven performance athletes. It provides accurate heart rate and HRV data plus running dynamics with step speed loss which helps runners improve their form when paired to a compatible smartwatch. After pushing hard, easily remove the module, and throw the strap in the wash. Details Connectivity ANT+ BT Size M XL

5 Primary Color Silver Steerer Tube 1-1/8-1

6 Primary Color Black S

42 BB/Frame Interface BB30 BB Shell Width (mm) 68 BB Shell Width (mm) 73 Weight 63 Spindle Interface Type BB30/PF30 Defined Color Silver

Wolf Tooth 104 BCD Chainring - 36t 104 BCD 4-Bolt Drop-Stop B Black

and legendary

Shimano XTR RD-M9000 11-Speed Rear Derailleur Pulley Set

Wolf Tooth Shimano 110 Asymmetric BCD Chainring - 42t 110 Asymmetric BCD 4-Bolt Drop-Stop Flattop For Shimano GRX Cranks Black

Garmin approved replaceable computer insert protects computer tabs\nHardware included

Shimano Ultegra RD-R8050-GS Rear Derailleur Outer Plate and Fixing Bolt

Ring Position/Type Chain Retaining Single Ring Tooth Count 38 Drivetrain Speeds 12 Drivetrain Speeds 13 Round or Oval Round Offset 6

It also features a revised 10-52T range making even the longest climbs easy

Insert-Compatible: Max-Flow base guarantees air flow