Shimano BR-R451 Front Mid-Reach Road Caliper Black MFPN=952104 reduced Q-factor and a lower

reduced Q-factor and a lower center of gravity

(mm) 40 Manufacturer Number MR006 Bearing O

The Marathon Efficiency is a state-of-the-art touring tire that sets standards for others to follow

BCD Direct Mount SRAM 3 Bolt Crank Spindle Diameter 28

Gemma Semi-Metallic G2

Shimano BR-R451 Front Mid-Reach Road Caliper Black MFPN=952104 reduced Q-factor and a lowerShimano BR R451 Front 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 Lever Actuation Short