The Avid X0 Silver Disc Brake exploits the mirror-like finish of polished aluminum to harken back to the origin of the X0 components. While they remind us of bygone days, they're as modern as ever.
The X0 brakes make use of forged aluminum for the lever body and caliper where the XX brakes use forged magnesium, and they use Avid's G3 Cleansweep rotor where XX brakes use a two piece Cleansweep X rotor. This is really what sets the two brake systems apart and the difference is measured with a few extra grams and some money left in your pocket.
Since they're part of the Elixir family, these brakes use Avid's Taperbore technology that incorporates the fluid reservoir into the piston assembly. This simplifies the system a bit and saves weight over designs that use separate reservoirs. The carbon fiber levers pivot close to the bars, closer than other makes. The reason for this is that it provides a lever swing that more closely matches the movement of your fingers as they close in towards the handlebars. This is part of what gives Avid Elixirs a natural feel. Combine this lever movement with a tool-free reach adjust and a pad contact adjustment, and they can be dialed in to fit anyone's hands and preferences. The last great thing about the levers is that they're Matchmaker X compatible. This is part of the upgrade from X9 brakes -- only XX and X0 have it. Matchmaker X allows you to bolt your shifters, brake levers, and even X-Loc remote buttons onto one clamp to simplify your control arrangement on the bars. It's a lighter system to boot.
The forged 2-piece aluminum calipers are stiff and have two huge pistons to provide big stopping power when you need it. The top loading design allows you to remove the organic brake pads without removing the wheel. And a banjo fitting on the caliper end of the brake hose swivels just enough to make hose routing clean and easy. Another detail, often overlooked, is that Avid uses DOT 5.1 fluid in their Elixir brakes. Test show that it boils at temperatures 3x higher than DOT 4 fluid. This means more stable and fade resistant performance for incessant braking on lengthy descents. To complete the system, the X0 Disc Brake gets Avid's G3 Cleansweep rotor. The G3 has varying sizes and shapes of cut-outs for a more consistent feeling braking surface and vastly improved heat dissipation.
The Avid X0 Silver Disc Brake is polished aluminum. Front and rear brakes are sold separately. You'll get everything you need for either your front or rear wheel -- one brake for each end. You'll need to select your rotor size -- 160, 180, 200mm.
- Tri-Align caliper adjustment is super simple for pain-free precision
- TaperBore technology provides consistent lever feel and predictable modulation
- MatchMaker X compatibility keeps your bars clean
- Carbon fiber levers drop weight and add envy points
- Ordanic, top loading pads are grippy and easy to replace
- Includes lever, caliper, hose, and rotor
Terms And Conditions
This Usage Agreement (the "Agreement") governs your conduct while using various services on the web site Backcountry.com and its affiliate web sites (collectively, the "Site"). All references to "we," "us," and "our" shall mean Backcountry.com and all references to "you" and "your" shall mean the user of the Site and Site Services. This Agreement applies to various services and activities on the Site as well as to gear review and product ratings (collectively, "Site Services"). Please read this Agreement carefully.
BY ACCESSING, BROWSING, AND USING THE SITE, ANY SITE SERVICES AND OTHER SERVICES THEREIN, YOU AGREE TO BE BOUND BY THIS AGREEMENT AND ITS TERMS. IF YOU DO NOT AGREE TO THIS AGREEMENT OR ANY SUBSEQUENT MODIFICATION THEREOF, DO NOT ACCESS, BROWSE OR OTHERWISE USE THE SITE OR SITE SERVICES, INCLUDING THE SUBMISSION OF ANY REVIEWS OR COMMENTS.
Any comments, reviews (including gear reviews and product ratings), posts, feedback, questions, answers, notes, messages, images, video, audio, materials, documents, data, graphics, ideas, suggestions or other communications (collectively, "User Content") you submit on the Site are not private or proprietary. By submitting User Content on or through the Site, you grant, assign and transfer to Backcountry.com all of your rights, title and interest, including without limitation, all intellectual property rights and moral rights, in and to such User Content. To the extent the preceding assignment and transfer is ineffective, you hereby grant Backcountry.com an irrevocable, royalty-free, worldwide, perpetual right and license to use, copy, modify, adapt, display, publish, archive, store, distribute, reproduce and create derivative works based upon such User Content, in any form, media, software or technology of any kind now existing or developed in the future.
By submitting such User Content on or through the Site, you are confirming that (a) you are the sole author of the User Content and the User Content originated with you and not copied in whole or in part from any other work; (b) you have obtained all necessary permissions associated with the User Content, including without limitation permissions relating to copyrights, trademarks, rights of publicity and/or rights of privacy; (c) the User Content does not contain hate speech or profanity and is not unlawful, threatening, abusive, harassing, tortuous, defamatory, vulgar, libelous, obscene, racially, ethnically or otherwise objectionable, an invasion of another's privacy, or otherwise in violation of this Agreement; (d) that you are not a minor and have the legal right and capacity to enter into and comply with this Agreement; (e) such User Content does not and will not, in any way, violate or breach any of the terms of this Agreement; and (f) Backcountry.com shall not in any circumstances be required to pay or incur any sums to any person or entity as a result of its use or exploitation of the User Content.
With respect to your conduct on the Site or while using the Site Services, you agree not to: (a) attempt to disguise the origin of any User Content transmitted to the Site Services whether through the Site or any third party site; (b) act in any manner that negatively affects other users' ability to use the Site and Site Services; (c) impersonate any person or entity, including without limitation, a manufacturer or owner of any product, or falsely state or otherwise misrepresent your affiliation with a person or entity; (d) interfere with the Site or Site Services, or servers or networks connected to the Site or Site Services, or disobey any requirements, procedures, policies, or regulations of networks connected to the Site or Site Services; (e) upload, post, or otherwise transmit any User Content that with respect to the Site Services: (i) is not relevant to the product, service, person or entity being reviewed; (ii) you do not have a right to transmit under any law or under contractual or fiduciary relationships (by way of example but not limitation, inside information, proprietary and confidential information learned or disclosed as part of employment relationships or under nondisclosure agreements); (iii) contains software viruses or any other computer code, files or programs designed to interrupt, destroy or limit the functionality of any computer software or hardware or telecommunications equipment; or (iv) is unsolicited or unauthorized advertising, promotional materials, "junk mail," "spam," "chain letters," "pyramid schemes," or any other form of solicitation.
User Content does not reflect the views of Backcountry.com, and Backcountry.com does not represent or guarantee the truthfulness, accuracy, completeness, timeliness, integrity, quality or reliability of any User Content, nor does Backcountry.com endorse or support any opinions expressed in any User Content. In no event shall Backcountry.com have or be construed to have any responsibility or liability for or in connection with any User Content, Any gear reviews and/or product ratings submitted on the Site, if displayed, are displayed for entertainment and informational purposes only. Under no circumstances will Backcountry.com be liable in any way for any User Content, including but not limited to, any errors or omissions in any User Content, or for any loss or damage of any kind incurred as a result of the use of any User Content posted, emailed or otherwise transmitted via the Site or Site Services.
If Backcountry.com determines, in our sole and absolute discretion, that you or any User Content you submit violates this Agreement, we reserve the right, at any time, without notice and without limiting any and all other rights Backcountry.com may have under this Agreement, to: (a) refuse to allow you to submit further User Content; (b) remove and delete your User Content; (c) revoke your registration and right to use the User Content Submission Features; and (d) use any technological, legal, operational or other means available to enforce the terms of this Agreement, including, without limitation, blocking specific IP addresses or deactivating your registration, access to the Site and Site Services using your e-mail address, and your user name and password. Without limiting the foregoing, once User Content is submitted to the Site, Backcountry.com may take any or no action with respect to such User Content, including without limitation, deleting, editing, modifying, rejecting, or refusing to post such User Content, but is under no obligation to offer you the opportunity to edit, delete or otherwise modify User Content once it has been submitted. Backcountry.com shall have no duty to attribute authorship of User Content to you and shall not be obligated to enforce any form of attribution by third parties.
If, despite the foregoing assignment and transfer of rights in the User Content, it is determined that you retain moral rights (including the rights of attribution or integrity) in the User Content, you hereby declare that: (a) you do not require that any personally identifying information be used in connection with the User Content or any derivative works of or upgrades or updates thereto; (b) you have no objection to the publication, use, modification, deletion and exploitation of the User Content by Backcountry.com or its licensees, successors or assigns; (c) you forever waive and agree not to claim or assert any entitlement to any and all moral rights of an author in any of the User Content; and (d) you forever release Backcountry.com, and its licensees, successors and assigns from any claims that you could otherwise assert against Backcountry.com by virtue of any such moral rights.
You are prohibited from violating the security of any system or network compromising the Site or the Site Services, including but not limited to the following: (a) unauthorized access to or use of data, systems, or networks, including any attempt to probe, scan or test the vulnerability of the Site or Site Services or to breach security or authentication measures; (b) unauthorized monitoring of data or traffic on the Site or of the Site Services; (c) interference with the Site or Site Services including without limitation, any type of flooding technique or deliberate attempt to overload the system such as denial or service attacks; (d) forging of a message header or any part of a message header; or (e) using manual or electronic means to avoid any use or access limitation placed on this Site or the Site Services. Such violations may result in criminal or civil liability.
Backcountry.com reserves the right to report any activity or persons that Backcountry.com suspects has violated any law or regulation to appropriate law enforcement officials, regulators, or other appropriate third parties (including the disclosure of appropriate subscriber information). Backcountry.com may also cooperate with appropriate law enforcement agencies to assist in the investigation and prosecution of any illegal conduct. Indirect or attempted violations of this Agreement and actual or attempted violations thereof by a third party on behalf of any user shall be considered violations of this Agreement by such user.
BACKCOUNTRY.COM DOES NOT ENDORSE THE USER CONTENT, IS NOT RESPONSIBLE FOR THE USER CONTENT AND SPECIFICALLY DISCLAIMS ANY RESPONSIBILITY OR LIABILITY TO ANY PERSON OR ENTITY (INCLUDING, WITHOUT LIMITATION, PERSONS WHO MAY USE OR RELY ON SUCH USER CONTENT) FOR ANY LOSS, DAMAGE (WHETHER ACTUAL, CONSEQUENTIAL, PUNITIVE OR OTHERWISE), INJURY, CLAIM, LIABILITY OR OTHER CAUSE OF ANY KIND OR CHARACTER BASED UPON OR RESULTING FROM ANY USER CONTENT PROVIDED THROUGH THIS WEB SITE.
Share your thoughts
Agree on all counts.
Running mine on a '09 Heckler set up with a more aggressive-trail-bike build. These brakes are a huge improvement in modulation over my Formula RX's (although the Formula's have serious power, which I love).
I would suggest 180mm rotors if you're really blasting on a trail bike.
Having the opportunity to run the XO brakes front and rear on my 29 inch race setup, Santa Cruz Highball, I can definitively endorse the high end performance of this brake set up. The XO was chosen for its ability for minor adjustments on the fly vs. the upscaled XX that has limited adjustibility. Going into my build I like the ability to adjust the calipers during a long ride if something radically changed in my braking system. The XO performed really well all season including standing up to about 6K miles in varying conditions. I did go through several sets of brake pads but that should be expected when finishing 5 NUE's on the season. The way I see it, I want the brakes PADS to wear not the brake cylinders, so pads are a cheap price to pay for continued performance. I ran the 160mm disc front/rear and could probably go through less pads if I upsized the dia of my rotors (albeit I like the lower wgt and response of the 160 dia rotors).
I did find the cable length that came stock were a bit long for my liking even on my size (L) frameset. Therefore, after about a month of riding I decided to flush the system with new brake fluid and cut down the cable length. The system comes with extra compression fittings so that you can mate the cable system to your frame size (I hav to give kudos for thinking on SRAM's part here).
If you are looking for high end performance, light wgt, and to keep some $$ in your pocket look no further these are your brakes for your high end XC rig. I am sticking with the XO this year again as they proved reliable and easily adjustable.