Shimano BR-R451 Rear Mid-Reach Road Caliper Black CheckoutSpec= 290mm Measure trainer at the widest

Measure trainer at the widest setting and measure the bike frame width at the rear hub

Tooth Count 28 Ring Position/Type Chain Retaining Single Ring Drivetrain Speeds 9 Drivetrain Speeds 10 Drivetrain Speeds 11 Drivetrain Speeds 12 Chainring BCD 64 Color Black Defined Color Black Material Aluminum

The classic hub that defines Swiss precision and performance

Tooth Count 25 Defined Color Black Interface Bolt Drive Color Black Material Aluminum

Shimano BR-R451 Rear Mid-Reach Road Caliper Black CheckoutSpec= 290mm Measure trainer at the widestShimano BR R451 Rear Mid Reach Road Caliper Black. Shimano BR R451 Road Brake CalipersCompatible with STI and brake levers that are Super SLR enabled (e. g. Dura Ace Di2 7970 Dura Ace 7900 Ultegra Di2 6770 Ultegra 6700 105 5700 Tiagra 4600) Light action and accurate brake power Adjustable toe in brake shoes Use of these calipers with standard SLR enabled STI and brake levers results in a "mushy" brake response TECH SPECS Brake Mount Type Mid Reach