Details
Featuring Mavic's most innovative technologies, such as SUP welding, UB Control machines braking surface and Fore Drilling, XM 819 is the only true UST rim available on the market. Stiff and durable, yet light, toped with the added benefit of riding tubeless.
The performance of a Fore drilled rim combined with the advantages of the UST Tubeless concept.
- Aluminum threaded eyelets (supplied with the rim)
- Cross Country and Cross Mountain UST Tubeless rim
- Technology : UST Tubeless, Fore, SUP, UB Control, Maxtal
- Recommended tires: UST Tubeless
- Do not use any rim tape
FORE
By drilling only one rim wall, Mavic made the rim four times more resistant to fatigue stress. All your energy is transmitted through a 40% increase in rigidity. One wall of the rim is drilled with a tapered point with carbide that heats the alloy, and pushes it inside the rim. It creates a chimney that can then be threaded. The integrated M7 nipple can be screwed directly into this thread.
_The rim is stiffer, which provides a better power transmission
_The rim has better fatigue resistance (4 times stronger)
_On MTB wheels, this makes the rim airtight for UST tubeless compatibility
MAXTAL
Exclusive to Mavic, an aluminum alloy that is 30% more resistant than a 6106 alloy for lighter and spicier rims. Exclusive alloy developed specifically for Mavic by Pechiney Alcan Group, for rim manufacturing and optimizing alloy characteristics vs. that specific use.
_30 % added strength compared to a classic 6106 aluminum rim of same weight
_Lighter than usual aluminum rim of same strength
SUP (Soudé Usiné Process)
A welded and milled rim joint which is extremely strong, eliminates shuddering when braking and offers superior wheel balance. After bending, the rim joint is arc welded. The welded seam is then milled for a smooth finish.
_Strength of the rim up to 90% at the weak point seam vs. 60% on a pin-joint rim.
_Eliminate shuddering when braking
_Easier wheel building for a more balanced wheelset
UB Control (Usiné Brut Control): The braking surfaces are milled to improve braking friction and eliminate shuddering. The sidewalls of the rim are milled with a diamond point on a digitally controlled machine after assembly and anodization.
_Higher coefficient of friction for a powerful braking
_Elimination of shuddering when braking
_Precision of adjustment of brake pads and trueness due to perfectly parallel braking surfaces milling
UST Tubeless (Universal Standard for Tubeless)
A better grip for tighter control. No more tube, no more rim tape: sounds too good to be true? The UST Tubeless concept eliminates heat, friction and guarantees a slow deflating rate if punctured. Creation of an airtight rim thanks to the Fore concept, drilling of one rim wall only. A UST rim profile shows specific humps to fix securely UST compatible tire or any other tube type tire.
_Tubeless brings more bike control, a better grip and traction off road and less pinch flats
_Enable use of lower tire pressure for better comfort and higher traction
_UST eliminates excessive rebound effect, risk of valve and tube torn stems
_No inner tube nor rim tape for a lighter but reliable wheel that is nevertheless compatible with tube type tires too