Raleigh - Durham - Chapel Hill - Cary/ApexCarrboro   Hours At All Locations: Mo-Sa 10-7, Su 12-5  Dedicated Parking At All Locations


Visa MasterCard American Express Discover
> Special Order Catalog > Components > Brake > Road Caliper Brake > Road Caliper Brake > Shimano R451 Front Mid-Reach Road Caliper Black

R451 Front Mid-Reach Road Caliper Black (BR4648)


Features and Information

  • Adjustable toe-in brake shoes
  • Compatible 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)
  • Use of these calipers with standard SLR enabled STI and brake levers results in a "mushy" brake response
  • Light action and accurate brake power
Item Specifications
Brake Lever Actuation Short Pull Super SLR
Defined Color Black
Brake Mount Type Mid Reach Caliper (47mm - 57mm)
Pad Type Cartridge
Brake Position Front

Feature Items

Specialized Pitch 650B
Specialized Pitch 650B - 2015/2016
Product Rating
3.0 stars
 (1 Review)

Ride it all with newfound confidence aboard Specialized’s Pitch 650B. A lightweight aluminum frame with balanced geometry is matched to 650B wheels… [more]

Specialized Ruby Compact - Women's
Specialized Ruby Compact - Women's - 2013
Product Rating
5.0 stars
 (1 Review)

Specialized's Ruby Compact balances comfort with speed and stability. The secret is Specialized's super-light, comfortable FACT 8r-carbon frame with… [more]

Raleigh Sojourn
Raleigh Sojourn - 2014
Product Rating
5.0 stars
 (2 Reviews)

Raleigh's Sojourn is a bike built for the open road and exploring the far side of every hill. Its renowned Reynolds chromoly frameset is strong,… [more]

Specialized Jynx Comp 650B - Women's
Specialized Jynx Comp 650B - Women's - 2015

Specialized’s Jynx Comp 650B comes ready to tackle everything in its path. Its lightweight aluminum frame has a balanced, women’s-specific geometry… [more]

Specialized S-Works CruX Di2
Specialized S-Works CruX Di2 - 2015

Looking to dominate the cross series? Specialized's S-Works CruX Di2 uses a lightweight FACT 11r carbon frame that's full of cross-oriented touches… [more]