Shimano BR-R451 Rear Mid-Reach Road Caliper Silver MFPN=Y1XK98010 14mm 4130 chromoly axle bolts

14mm 4130 chromoly axle bolts with 17mm 4130 chromoly female axle

Color Silver Range 11-40 Cassette Cogs 11-13-15-18-21-24-28-34-40 Cassette Body Type Shimano/SRAM 8 9 10 Speed Drivetrain Speeds 9 Defined Color Silver

0 Color Gold Material Aluminum Defined Color Gold S

Built for performance and All Day Comfort

Shimano BR-R451 Rear Mid-Reach Road Caliper Silver MFPN=Y1XK98010 14mm 4130 chromoly axle boltsShimano BR R451 Rear Mid Reach Road Caliper Silver. 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