Shimano BR-R451 Rear Mid-Reach Road Caliper Black MFPN=XLCAQ 55mm chainline compatibility for more

55mm chainline compatibility for more moderate chain angle

Bearing hardware compatible both sides Air valve location offers improved frame fitment and pump access Stroke (mm) 50 Lockout Switch Shock Mounted Switch Metric Yes Eyelet Diameter (mm) 12

This makes it much easier access to the bottle

0 Length 289 Defined Color Black Spoke Interface J-Bend

Shimano BR-R451 Rear Mid-Reach Road Caliper Black MFPN=XLCAQ 55mm chainline compatibility for moreShimano 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 Brake Lever Actuation Short Pull Super SLR Pad Type Cartridge Brake Position Rear Brake