We build lots of wheels, and the Mavic XM 819 Disc rim is a favorite of our wheelbuilders. Part of the appeal is that it's easy to build. Strong rims usually are. But the greatest appeal is that we can build a set and then forget about them. They're that reliable. We have yet to see one fold, or get reports of one taco-ing. For our customers, they definitely like that the rim comes drilled on only one side -- meaning it's tubeless ready without rim strips. The Mavic XM 819 Disc rim comes in black and is drilled for 32 spokes. You must install the m9 nipple holders along with the spoke nipples before building up the rims. Tubeless 101: The Why and the How Explained.
Weaknesses: Weak, easy to ding and buckle, heavy, difficult to build, doesn't work that well with Schwalbe tyres.
Very disapointed with these rims. Bought the XM819 to replace a cracked ZTR Arch (rider error). Rode the Arch for a year and a half and had only a few dings and buckles. After 5 weeks on the Mavic XM819 i've had to straighten 3 times and remove 4 or 5 dings. Riding the same trails, I've had more buckles on these than any other wheelset (including my superlight Shimano XTRs).
If you are after a strong, light rim, look elsewhere.
I haven't ridden these very hard nor for many miles and they already have two dings one of which is major. I run tubeless and higher than most tire pressure, 35-38 psi. I had the Mavic crossmax slr set and the rims on that set were stronger. I'm just not impressed at all. I will not buy mavic again.
a Weekend Warrior
from Orange, CA USA
Date Reviewed: March 27, 2011
Strengths: Haven't ridden them long enough to know
Weaknesses: Some of them rattle like a penny in a tin can.
Apparently Mavics are known for a manufacturing defect, that I wish I had known about before ordering these rims and building wheels. My rear wheel was built with the new Alfine 11 hub and the XM819 rim. At first I thought the noise was from the hub, but after close inspection, I detected that it was coming from the rim. I was told by several friends (after the failure) that Mavic inserts pins into the rim to align the sides before welding, and some of these pins come loose and rattle around.
I was unlucky with this rim, but Mavic is doing a warranty repair, replacing the rim and rebuilding the wheel. I can only hope that these rims do not start rattling in the future, especially after the 2 year warranty expires.
I give it 3 chilis, only because I am getting warranty coverage. Without warranty, it would be one flaming chili up the sphincter.
Strengths: Super Stiff, True tubeless UST that uses a collar system to hold the spokes/nipples in place. Never replaced a spoke. Only trued twice.
Weaknesses: Sometimes rocks scratch the black paint...
Great affordable wheel-set. I used XT hubs and tipple butted spokes for disc brake use. I put a pretty good flat spot in my rear wheel after after a failed attempt at bunny hopping over two squares of sidewalk under construction. Even after the damage the wheels still hold up fine.
Use a triple butted spoke for added strength and weight savings. Have a professional mechanic build the wheel and bring it back after 10 miles of riding for a check up. After that it should be smooth sailing and you will only need to true wheels after extreme abuse.
Bike Setup: 05 Titus Talas Switchblade, Shimano XT Cranks/cassette/chainrings/chain/front derailleur, Sram X.0 gripshifts/rear derailleur, Formula 2010 The One brakes 180mm f/r, Masterpiece seatpost, Elite stem, Manitou Absolute Elite 140mm MY08 forks, Fox Talas shock, Mavic 819disc rims, DT Swiss 240s hubs, continental Mt. King 2.4 ust front, WTB Weirwolves 2.1 ust rear.
a Cross Country Rider
from Fountain Hills, AZ, USA
Date Reviewed: December 11, 2009
Strengths: - UST rim; no rim strip needed for tubeless operation.
- Easy to tension and true.
Weaknesses: - Special tool needed for building wheel (nipple grommet wrench).
- Prone to cracking with lots of use.
I've cracked three Mavic XM 819 rims. Each has cracked in the vicinity of the stem access hole in the inner channel where you'd put rim tape on a conventional rim. (The XM819 doesn't use rim tape - there's solid metal where you'd normally find spoke access holes.) These cracks leak air if you're running them with tubeless tires. Once the crack gets big enough, it'll snag and rip a tube if you're running them with tubes.
When building a wheel using these rims, a special wrench is needed to tighten the nipple grommets. You also need to use thread locker to glue them in place. Aside from those details, building a wheel with an XM819 rim isn't much different than building with a conventional rim.
The XM819s are very round to begin with and are, therefore, easy to true and evenly tension.
I tensioned the first two rims that I cracked to have a maximum spoke tension of between 110-115 Kgf. Later, I learned that Mavic recommends between 70-90 Kgf for all of their aftermarket rims. I rebuilt the wheel again with a new rim being careful to not exceed 90 Kgf on the drive side. (It's a rear wheel.) I got six months of use out of the rim prior to it cracking. I conclude, therefore, that this problem is most likely not due to the wheel being overtensioned. After all, I got a year of use out of the first rim which had a higher spoke tension.
These rims contribute to some great wheels when new. Unfortunately, for me, they have not held up well over time. More details are available at http://forums.mtbr.com/showthread.php?p=6363555
from Otautau, Southland New Zealand
Date Reviewed: October 30, 2009
Strengths: Nil Maintence and Super Strong
I've had theses rims for about 3 years and have used them on my hardtail and dually with tubes and UST . I've raced/thrashed the crap out of them over rocks, roots,smallish gap jumps, 3 day races etc. I've crashed and burned and these rims have still stayed true . They're rock soild and amazing. Get them !
Bike Setup: Giant XC Hard tail and Full suspension with DT Swiss hubs
a Cross Country Rider
from Miami, FL USA
Date Reviewed: October 15, 2009
Strengths: Bulletproof! Very strong, no need for rim tape, reenforced spoke guides (if thats what they are called)
Weaknesses: not the lightest rim, probably not best for all out racing.
I had these wheels built just under 1 year ago and have had absolutely no complaints. They are bulletproof! I had them built by Chain Reaction Cycles with hope pro II hubs dt swiss comp spokes and have held up very well. They arent the lightest wheel out there, but they are definately stronger than most wheels out there. I have rode them on various terrain in the roots here in Miami, Rocks in n. Tx. singletrack of Arkansas's Syllamo MTB park, Iowa and my home n. michigan. They have not shown any weakness.
Two features that are fairly unique is that the channel where the wheel mounts is completely sealed. There is no need for rim tape. The spokes are mounted from the outside of the wheel and locked to the the rim by the spoke nipples that get screwed it not the "spoke guides?"
All in all they are the best wheel i have rode, and you have the option to mount them to whatever hub you like (all you faithful Chris King followers) assuming they are 32 hole.
I do not consider these a full on race wheel, as they are slightly heavier than other models, but definately a lot stronger!!!!! Great for All Mountain or technical singletrack.
Similar Products Used: Mavic 717, Mavic 317/319, Mavic Crossland
Bike Setup: Santa Cruz XC, Fox F120 RLC, Truvativ 3.3 Stylo OCT, Mavic 819 w/ Hope pro II hubs DT Swiss spokes, SRAM X9 Drivetrain, Easton Monkeylite CF riser bars, Thompson Elite w/ Fizik Gobi XM.
a Weekend Warrior
from Huntington LI
Date Reviewed: September 6, 2009
Strengths: Stiff, strong, and light
I got rid of the crappy alex wheelset with the shimano hubs that came stock.
This wheelset with DT swiss hubs changed the bike so much it's unreal.
There's almost no flex to the rims, even on hard hits where my other bike's rims flex like crazy. I fell today on myother bike that still has Alex rims...I'm getting a second 819 wheelset for it now so I can ride my way with no worries.
Amazing rims...you have to go tubeless if you get these.
a Weekend Warrior
Date Reviewed: June 27, 2009
Strengths: Lightweight and STIFF
Weaknesses: None yet
These rims are an unbelievable improvement on the Crossrides (probably not fair to compare them really). I've had them on the bike for a couple of rides and they are AWESOME! I weigh 100kg and they don't budge under hard corners or crossed up landings. The stiffness really lets you feel the trail underneath you and give good feedback to the bars. Even better, they're ready for tubeless, no messing around with cut up inner tubes and all that mess. GET THEM!!! As they are new I still haven't given them any big hits but will post again if any problems come up, otherwise, they are my perfect rim for enduro type riders!
a Weekend Warrior
Date Reviewed: February 28, 2009
Strengths: Super strong wheelset. Requires almost zero maintenance
These sweet wheels have almost 10K miles on them riding pretty tore up dirt roads in Michigan. By far the best Ive ever ridden...Do yourself favor and invest in these rims, but make sure you couple them up with good hubs.
I'm plan for a new wheel set and have been looking on the Shimano Deore XT 785 hub together with Mavic rims and DT Swiss spokes.
1. Does anyone has the dimensions of this hub set? In shimano hub information on the link below, this hub is yet not listed.
[URL]http://bike.shimano.com/publ ... Read More »
Has anyone using the Mavic UST XM 819 rims ever had one of the spoke nuts pull free of the rim? I built these up in May. Last week on a ride, during a climb, I had to stop and tape a spoke out of the way that had pulled completely free of the rim. The 9mm spoke nut was still attatched, and the threa ... Read More »
Have a new rear wheel arriving today, Mavic XM819 and Hope II hub...... Now for the newbie question. Currently running a Kenda Nevegal UST (with no-tubes conversion)on a non-ust rim. Besides removing the cassette and placing on the new wheel. What needs to be done to mount a UST Tire on XM819? Th ... Read More »
Does the Mavic XM 819 rim require "special" spokes and nipples?
Saturday I totally bent the WTB Laser(something) rear wheel that came on my Trance X2. Trying to learn if I buy the Mavic UST rim will I also need to buy spokes and nipples.
TerryRead More »
Is it OK to build custom wheelset on XM819 using alu. nipples ?
As I see XM819 has alu. eyelets so will it be ok to use alu nipples with these alu eyelets? Or in times on eyelet-nipple contact point there will be chemical welding and it will unable to true the wheel...?
ThanksRead More »