Free 2-Day Shipping on Orders Over $50 100% Guaranteed Returns
1-888-276-7130
Save 20% or More on Louis Garneau
SRAM Guide RS (B1) Disc Brake
$154.00

Item # SRM00B1

Select options
  • Select options
  • Gloss Black, Front/Left ($154.00)
  • Gloss Black, Rear/Right ($154.00)
  • 100% Guaranteed Returns
  • Free 2-Day Shipping
    on orders over $50

Item # SRM00B1

Description

A trusty trail guide.

When dropping into your favorite flowy run, it's nice to know you've got SRAM Guide RS (B1) Disc Brakes along for the ride in the event of an unexpected mid-trail moose sighting or the perfect #autumncolors photo op. The Guide RS utilizes SRAM's Timing Port Closure, with a sliding cup seal and port mechanism that provides immediate actuation with a light pull action. The Swinglink lever facilitates powerful modulation, with a proprietary cam shape that's claimed to eliminate the jarring on/off feeling found in other disc brake systems so you won't get thrown over the bars when you mash on the brakes in front of that moose. As an extra bonus, the lever features Reach Adjust to quickly personalize your setup.

These brakes feature SRAM's new S4 caliper with Bleeding Edge design that updates the fluid and bleed routing for easier brake maintenance, with a bleed adapter plug that seals off the system from air and dust. The new caliper also boasts SRAM's Heat Shield technology, which consists of stainless steel shields that buffer the connection between the pad and caliper body to reduce head transfer to the hydraulic fluid and reduce its temperature by a claimed 20-degrees Celcius under heavy use.

Note that the Guide RS Disc Brake comes in either front/left or rear/right variants, with included lever and caliper configuration. It's compatible with SRAM's Centerline Rotors (sold separately) and uses DOT 5.1 fluid. Additionally, the Guide R is Matchmaker and Matchmaker X compatible, meaning you can run multiple controls off one lever clamp for a more streamlined set-up.

  • 4-piston, dual-diameter S4 caliper with Heat Shield technology
  • Swinglink lever design offers exceptional modulation
  • Includes SRAM's steel-backed organic brake pads
  • Timing Port Closure with sliding cup seal and port mechanism
  • PiggyBack Reservoir uses DOT 5.1 fluid (brakes come pre-bled)
  • Includes either front/left or rear/right lever and caliper configuration
  • Compatible with SRAM Centerline Rotors (not included)
  • Matchmaker and Matchmaker X compatible

Tech Specs

Lever:
aluminum
Lever Adjustability:
reach (tool-free)
Actuation:
hydraulic
Caliper:
S4 with Bleeding Edge and Heat Shield
Caliper Adjustability:
adjustable banjo
Mount Type:
post mount
Fluid:
DOT 5.1
Pre-Bled:
yes
Claimed Weight:
385 g
Recommended Use:
mountain bike
Manufacturer Warranty:
2 years

Reviews & Community

REVIEWS

Write a review

    Add a:
  • Photos
  • Videos

No file chosen

Rather attach a photo from your computer?

Familiarity:

Only jpg, jpeg, png, gif or bmp files please.

Submit ReviewCancel
Avg. ride time: 3h 53m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Mushy and unreliable

  • Familiarity: I've put it through the wringer

These brakes were awful and took away my confidence when riding. They came stock on a Yeti SB5c Turq and I had problems with them since day one. They were mushy and did not provide decent stopping power. I had continual problems with the rear pistons not retracting on one side, causing endless brake rub (super annoying). My LBS serviced multiple times and eventually warrantied the brakes (widespread problems with the lever on this model), but the problems remained. Very frustrating.

I was hoping that SRAM got their act together with these brakes, but apparently not. I will stick to Shimano brakes, which are cheaper, lighter, and much more consistent and reliable (the ZEEs are an absolute win!).

Inconsistent and Spongy

  • Familiarity: I've used it several times

These brakes came stock on a Santa Cruz Bronson CC I brought from Competitive Cyclist in February, 2018. After around 20 hours of use, I've already needed to have them bled once, and have completely lost braking ability while on a trail ride. Since they're over 30 days old Competitive Cyclist will not accept a return, and Sram won't stand behind their product. After I bought and installed Shimano brakes, Sram will only consider a warranty if I reinstall the Guides and send a video. This is especially frustrating because the braking is inconsistent; it works fine sometimes, but is spongy or even non-existent at other times. Above anything else, I want to know what my brakes will do every time I pull the lever. With these brakes, I have to keep pumping them the whole way down a descent to make sure they will work. This is unacceptable. I highly recommend sticking with Shimano brakes, even the 2-piston XTs are much better and consistent than these. Very disappointing.

Good brakes for most

  • Familiarity: I've used it several times

I like these brakes, however, I also like my brakes extremely sensitive and these are not, so if you like super touchy brakes I would go for a different brand.

Love em

  • Familiarity: I've put it through the wringer

From spinning laps at deer valley to blasting through chunder in southern Utah, these things will stop you, fast. Love em.

Avg. ride time: 21m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Trusty and reliable

  • Familiarity: I've put it through the wringer

I run these in Utah in the summer, in 100+ conditions. Haven't suffered any sluggishness or failure. They brake solid. I pull, I stop. That's what i am looking for in a braking system.

Work fantastic, just not in high heat

  • Familiarity: I've put it through the wringer

The Guide RS brakes install and setup very easily. While at first it may not feel as if there is much power on tap, there definitely is plenty. The brakes offer great modulation with a slightly softer bight point that allows for you to really control how much brake you are using and prevents you from skidding down the trail. The only issue I have run into is that on long rides in very hot temperatures, the brake seems to lose a lot of the modulation that makes these brakes so good.

Avg. ride time: 58m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

How to Bleed Sram Guide [b1] Brakes

Avg. ride time: 58m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Packs A Punch

  • Familiarity: I've put it through the wringer

I've run Guides on my past 3 bikes and absolutely love them. I think both Shimano and Sram make quality brakes and think that Guides have qualities that I prefer over XT or other Shimano brakes.



First of all, the dual caliper / 4 piston design packs a punch. They're powerful brakes. No question using them on hefty downhill trails.



I like the modulation of the brakes - meaning they gradually give more and more breaking power when you pull the lever more and more. Shimano has a more off/on feel and because of this, I like the Sram Guides.



Easy to bleed. Item number SRM005W and easy to follow along video, even someone not hugely mechanically inclined can follow along!



If you're looking for an upgrade to your brakes, you should absolutely consider Guides as a possibility. There are several levels of Guides and I'd be happy to help find the best ones for you - you can call my direct line 801.204.4547 or email me at cojohnson@backcountry.com.

Packs A Punch

Stop on a dime

  • Familiarity: I've put it through the wringer

3 years ago I never would have run a Sram brake on my bike. I was skeptical when Sram introduced the Guide line. After riding several bikes with Sram Guide R, RS, and RSC brakes I was converted. The stopping power on the RS is equivalent to that of a Shimano XT brake but it provides better modulation compared to a Shimano. With modulation you can ensure that you stop when you need to and that you don't just lock your brakes up. For the money these are probably the best stoppers on the market.

Good brakes and easy to install

  • Familiarity: I've used it several times

I've only had them a couple weeks now but so far they've been great

Thanks for the review Kristin! Super helpful to get this feedback out to the community.