Shimano 11-Speed Double Hydraulic Disc Brake R685 STI Lever and RS785 Caliper Set w/o Adapter
As roadies who also ride mountain bikes, we often find ourselves obsessing over hydraulic disc brakes. Luckily, Shimano's amazing hydraulic disc brakes have found their way to the world of drop bars and skinny tires. The Ultegra-level Shimano 11-speed Double R685 STI brake levers deliver the smooth, powerful, all-weather stopping power of hydraulic brakes to all of Shimano's 11-speed road groups, making it easy to make the leap. If you are running an 11 speed Shimano mechanical drivetrain and want hydraulic brakes on your road bike, this is the setup for you.
Shimano replicates the ergonomics of their standard Ultegra levers, except they've made the hood slightly taller to accommodate the cylinder. The R685's design uses a 2-piston design with a unidirectional internal fluid circuit that progresses braking control and modulation, as well as make bleeding easier.
The accompanying RS785 road disc brake calipers are modeled after the legendary Shimano XT M785 MTB calipers. This ensures braking performance is strong and reliable, featuring a 2-ceramic piston design and finned ICE Tech pads to provide the same great heat dissipation as the XT brakes.
The lever set comes with a full set of shift cables (enough for 1 bike), hydraulic hose, and Shimano mineral oil brake fluid. As such, the system is not pre-bled, but is very easy and clean to set up, especially if your bike has internal hydraulic brake routing. However, in order to install, you will need a Shimano hydraulic bleeding funnel.
- Ice-Tech pads dissipate heat to maintain braking performance on long descents
- Consistent braking performance in all weather conditions
- Customizable braking performance for ride conditions, terrain, rider size and experience level - Rider tuned
- Ice Tech Resin finned brake pads included
- Reach-adjustable Carbon levers
- Post Mount Brake Calipers
- NOT Pre-bled. Requires hydraulic fluid to be added and a system bleed for proper installation
- Lever: Carbon
- Speed: Shimano 11 speed road (not 11 Speed MTB compatible)
- Hydraulic Fluid: Mineral Oil
- Piston Type: Opposed 2 Piston
- Cable: SP41 outer cable, inner cables are Ultegra-level Polymer-coated
- Model Number: BR-RS785
- Includes: Calipers, pads, shift cable, hydraulic hose and mineral fluid
Braking: Once filled and properly bled (see below), these provide amazingly crisp, responsive, powerful, controllable braking. At one point, I decided to test just how much braking power was available from the hoods, so at a pace of about 60 kph, I took a nice low, rearward position, and grabbed a fistful of brakes. Even as low and rearward as I was, my rear wheel was still floating above the ground until I came to a complete stop. Even with that much power available, it's quite easy to control the exact amount of power needed. If you're used to good hydros on your MTB, these provide exactly what you'd expect.
Now, bleeding: These took a LOT more attention to detail and work to get 100% bubble-free and crisp than the hydros on my MTBs have ever taken. At first, I thought it must have been me, but after consulting with a couple of professional mechanics, they said that their experience is the same, that these brakes are much more finicky over extremely tiny air bubbles that would go completely unnoticed on, MTB brakes. So, definitely plan on a bit more time than you might expect to get these 100% solid.
The kit includes two small bottles of mineral oil, which should be enough if you're experienced with disc brakes. It also includes piston-spacing blocks to use while filling, and pad-positioning blocks to set the final spacing of the brake pads.
1 year ago
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