No hay artículos en el carro
No hay artículos en el carroBR-R451 Pinzas de freno de carretera Características: zapatas de freno ajustables. El uso de estas pinzas con STI estándar habilitadas para SLR y palancas de freno da como resultado una respuesta de freno "blanda". Compatible con STI y palancas de freno que están habilitadas para Super SLR (por ejemplo, Dura Ace Di2 7970, Dura Ace 7900, Ultegra Di2 6770, Ultegra 6700, 105 5700, Tiagra 4600) Acción ligera y potencia de freno precisa. Especificaciones del artículo: Actuación de la palanca de freno: tracción corta Super SLR-Defined Color: plateado. Tipo de montaje de freno: pinza de alcance medio (47 mm. 57 mm )-Tipo de almohadilla: cartucho de freno posición: parte trasera
Pork Chop
Comentado en los Estados Unidos el 18 de agosto de 2023
Shimanao makes really quality dual pivot brakes. These are medium cage so they will work on lots of the older bikes also. I used it on a 20 some year old Surly pacer road bike.
Festus Necrogums
Comentado en los Estados Unidos el 24 de julio de 2023
Bought this to replace a 2011 Shimano 105 caliper that had finally worn. This caliper is identical in design, and works great. It's heavier, but if would rather save a few dollars than a few grams, you can't go wrong.
Soichiro
Comentado en los Estados Unidos el 13 de mayo de 2023
I purchased this Shimano brake (got the front one at the same time) to replace the calipers on my 2009 road bicycle, which came with Dia-Compe BRS 101 caliper brakes. Both these brakes are mid-reach - Shimano 47-57mm and Dia-compe 43-57mm. The original brake lever/caliper always felt soft (mushy) and not crisp. I changed the levers but felt the same, so I decided to purchase this Shimano calipers which are much beefier and has matte finish, which happen to match my other components. The difference between Dia-compe and Shimano is very clear - unlike Dia-compe's soft feel, Shimano brakes are much more responsive, likely due to rigid brake arms. Keep in mind that, I am comparing with the old, used brakes with brand new ones, so I am sure that is a part of it, but I am pretty happy with the purchase.
John P.
Comentado en los Estados Unidos el 19 de julio de 2016
Nice quality construction. I gave it 5 stars even though I couldn't use it on my bike. My fault - I should have read the Q&A section before ordering. I converted a 1975 Schwinn Le Tour to a fixie with 700cm rims. In this configuration, the rear caliper needs a loooong reach. Had to go with a Tektro long reach unit instead. Make sure you measure your bike before ordering, because there are long reach calipers and really long reach calipers. Included a photo of my rear caliper to illustrate the reach measurement.EDIT: Max reach on the Shimano R451 is about 57mm. Max reach on the Tektro R559 extra long reach is about 82mm (As measured by me. Manufacturer's spec is 72mm.)
Steph
Comentado en los Estados Unidos el 10 de agosto de 2014
A year or so ago I bought a Giordano Libero bike because I wasn't ready to make the investment in a more expensive bike (mainly because I wasn't sure how much I was going to use it). Turns out I used it a lot, but there was a few things I needed to upgrade to make it less infuriating to ride. The main thing was the brake calipers. I searched far and wide for something that would fit (and those shorter-reach calipers that apparently everyone is using just wouldn't reach far enough. ) Finally I found these. FINALLY something fit. My ride has changed so much, I can finally brake from the hoods without feeling link my hand is going to snap in half. I also ride a four-mile 2,000 ft elevation gain ride frequently, I used to have to stop half-way down to give my hands a rest. Not anymore. I can go straight down and straight up. Definitely worth the investment. Easy to install and adjust. If you're installing this on a Giordano Libero you will probably have to do what I did - bore out the existing hole for the caliper just a little bit - it wasn't quite big enough.
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