SRAM Trail House Part 2: Avid XO Trail Brakes
Welcome to day two at the SRAM Trail House.
TSage, wake up! It's learnin' time. Day two's agenda: get familiar with two new brake offerings from Avid, then hit the trails to test them out.
As Tyler Morland runs through some of the XO Trail lever body highlights, take a closer look at the sexy and slim four piston caliper.
See the bearing at the pivot point on the lever? Paul McClain spills the details. Despite having one less bearing than the Codes, the XO Trails have the same feel. It's smooth and there is absolutely no wiggle in this lever setup.
The XO Trail four piston caliper has two 16mm and two 14mm pistons. For comparison, Codes have two 16mm and two 15mm pistons. The intent with this brake was to tone the power down slightly for all purpose use.
XO Trail brakes use a larger pad than standard XO brakes. Paul notes that the main benefit here is actually improved wear characteristics, not power.
Also new from Avid is a refined dual piston XO brake.
Both versions of XO brakes gain the improved Taperbore design.
Introduced last year, the Air Trap feature of Taperbore solves a lot headaches by keeping air out of the crucial part of the system.
Another big improvement Avid introduced last year were the HS Series rotors. They were originally released in 140, 160, 180, and 200mm sizes.
Now they are bringing back the 170mm rotor. This happy medium between 160 and 180 allows you to tune in braking power. The 170mm rotor will be especially beneficial for those on 29ers.
While rides get prepped for the afternoon, reigning BoXXer World Champ, Evan Warner, weighs in on how to properly setup your brakes. Listen closely, because doing this correctly makes a big difference.
SRAM brought us to the Trail House to ride, and we certainly did. Day two brought us back to the Demo Forest trail area. The relatively steep terrain and our XO Trail equipped Yeti SB-66's certainly allowed us to let it rip. Because the brakes were more powerful, I found myself braking into turns later.
Several of SRAM's athletes are now using the XO Trail brakes, including Kyle Strait. Danny Hart is also testing them for full on DH use at select World Cups, a testament to how capable they really are.
While out on the trail the term "quiver killer" came up. Due to their comparatively light weight and strong, yet usable power, these brakes truly are suitable for just about any type of riding, just as Avid intended.
Lever feel? The shape hasn't changed, but thanks to the pivot bearings, the levers felt incredibly smooth and solid. Brake noise? There was only one point on the trail where the brakes chirped for about half a second. Very acceptable. Power? We found the XO Trails to be substantially more powerful than the previous dual piston version of the XO brake. They're all-around winners, and we think Avid nailed it with the XO Trail.
The Trail House adventure isn't over just yet. SRAM brought Grip Shift back, and Kyle Strait still has to tell you his story. Check back next Thursday.
Before you go, soak up some of the action from our stay.





wakaba
3/24/2012 9:43 PM
If I see this marketing innovation 4 thingy with blingy. Elixir 1 does it at a fraction of the cost.
bturman
3/26/2012 12:30 PM
The Ford Focus gets the job done as well, but wouldn't you rather drive a Ferrari? There are several big differences between the Elixir 1 and the XO Trails.
wakaba
3/26/2012 1:41 PM
No I would rather drive a Lotus - oh I did. Now I drive a pickup because it is practical.
XO is overcomplicated crosscountry brake best left to the funny color shirt crowd. I run Elixir 1, 3 and 5 in my DH stable. Elixir 1 is best and easiest to work on. I chucked Magura, Formula because they sucked. Leaves Hayes, Hope and Shimano. Too pricey and fragile. Which brings me to the point - a simple lowly and well engineered pickup beats Ferrari and Focus in versatility, practicability and endurance. So does an Elixir 1. If Elixir 1 is good enough for me - it is probably overengineered for most the rest of the crowd. XO is a figment of imagination of marketeers - not rooted in reality.
ColoradoDirt
3/23/2012 6:42 AM
Great article. Innovation is a key element to bicycle growth. That is why you can buy Elixir 1 and have a great hydraulic brake for like 69.99, or something close. Allowing new riders into our sport. I want XO Trail!
TEAMROBOT
3/22/2012 11:13 PM
I'm sorry, did they say the difference in weight between the regular x.o brake and the trail brake is 25 grams? That's less than the difference between rotor sizes. Why even offer the old x.o brake anymore? Why not just offer the bigger, more powerful, marginally heavier caliper and have people bump down a rotor size.
Also, watching mtb journalists ride is still my favorite thing ever. I can't wait for my first Interbike dirt demo. With all the journalists and LBS owners tearing up the trails, it must be the mountain bike equivalent of Woodstock- all the masters of their craft all in one place at the same time.
bturman
3/23/2012 12:44 AM
Mr Roboto, I believe the dual piston is sticking around for now because OEMs still want it. I was told the plan is to phase it out.
And yes, I'm slow and clumsy on a bike. Thanks for rubbing it in!
wakaba
3/22/2012 9:07 PM
4 Pistons and less power than let`s say an Avid 1? 2 more seals to wear and break? Another type of brakepad? More discs to lessen brakepower - thought you wanted max. brakepower and modulate with your fingers? Adjusting cups and shims on top of the caliper serve no purpose and look unprofessional. All new shiny stuff - shinier than last years and outblings Shimano. Marketing innovation - do people really buy into it?
James_Doc
3/22/2012 5:02 PM
Where and when can I buy these expensive and unreliable brakes then?
JoeBernard88
3/22/2012 11:28 AM
Sweet. Just what I've been wanting. A toned down version of the sweet sweet codes. Those pads are going to be expensive, though.
k.shiz
3/22/2012 8:54 AM
Better than last year's already great XO brakes... I'll take two please.