3 O-done f --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 powerAdjustable toe-in brake shoesUse of these calipers with standard SLR enabled STI and brake levers results in a "mushy" brake responseItem SpecificationsBrake Mount TypeMid Reach Caliper (47mm - 57mm)Brake PositionFrontBrake Lever ActuationShort Pull Super SLRDefined ColorBlackPad TypeCartridge------4 G----1309964 (274 - 277)3/18 #60120:10:9/4--1: rtn on 9/23----1 RTN ON 11/4---52421(7: 6/24:ari 91321(10: 9/16:ari 92021(20 : 9/23:ari------- 92721(15 9/30:ari---1rtn on 10/18-----1:rtn on 10/27--1:rtn on 7/11 112822(10:11/30/22:ari: 11623(10:1/24/23:ari----1:rtn on 2/6/23----#33023(10:3/31/23:ARI

BR-R451.

Date First Available: September 29, 2011. Best Sellers Rank: #84,558 in Sports & Outdoors. Customer Reviews: 4.5 out of 5 stars 141 ratings 4.5 out of 5 stars. : B006GHDD82. Grip Material: ?Alloy. Sport Type: ?Cycling. Size: ?Front. Style: ?Brake Calipers. Model Year: ?2012. Part Number: ?EBRR451AF73XL. Manufacturer: ?Shimano Cycling. Number of Items: ?1. Suggested Users: ?unisex-adult. Material: ?Alloy. Color: ?Black. Model Name: ?R451 Front Mid- Reach Road Caliper. Brand Name: ?SHIMANO. Item Weight: ?0.72 Pounds. Item Dimensions LxWxH: ?6.5 x 4.75 x 3.75 inches. Package Weight: ?0.34 Kilograms. Item Package Dimensions L x W x H: ?6.6 x 4.7 x 3.8 inches.