Mavic Ksyrium SL UST Disc front wheel

Ever wondered what the world’s best alloy road wheel might look like? Lightweight but durable, laterally stiff but vertically compliant, confident braking and easy tubeless compatibility—it’s all here in the all-new Ksyrium SL Disc

Ksyrium has always represented the best of aluminum wheel technology. Following in the footsteps of the venerable Ksyrium Elite and Ksyrium Pro, the all-new Ksyrium SL takes it to the next level. It’s the perfect all-rounder for those seeking a wheel that delivers reliable everyday performance on the road.
This new wheel is lightweight (100g lighter than the former Ksyrium Elite despite its wider rim) and durable as ever thanks to our patented ISM4D technology. This manufacturing process removes all excess material between each spoke hole while keeping the rim wall thick enough where spoke tension and stress is the highest. Those rims are made in France, in our aluminum rim factory.
The double-butted spokes further reduce weight while making the wheel more responsive. These spokes also have a patented elliptical shape that can save 5 watts for added efficiency.

Key benefits

Superlight and durable for everyday performance
ISM4D rim weighs only 400g
Patented lightweight aero spokes and 22mm deep/19mm wide rims keep inertia low and control high
Solid upper rim bridge eliminates the need for rim tape, saving 60g

Laterally stiff, vertically compliant for a more dynamic ride
Fore technology keeps the rim upper bridge solid to make the rim stiffer
New Infinity hub plaform: stiff axle, durable bearings and new hub design guarantees wheel stability
ID360 freewheel technology for improved power transfer

Improved UST Road delivers more speed, comfort and control in an easy to use tubeless system
No tubes means less friction, better efficiency and grip, a reduced risk of punctures
New rim bed shape makes it easier to mount and change tires
Fore drilling technology doesn't require the use of rim tape

Features 

Rims
Material: Maxtal.
Height: 22mm.
Joint: welded (SUP)
Drilling: Fore (fully sealed rim with no rim tape)
Tire: UST Tubeless and tubetype
Internal width: 19 mm
ETRTO size 25": 622x19TC Road

Spokes
Material: steel
Shape: straight pull, elliptical aero, double butted
Nipples: Fore integrated aluminum
Count: 24
Lacing: crossed 2, contactless

Hubs
Auto adjust sealed cartridge bearings (QRM Auto).
Body: aluminium.
Axle material: aluminium.

Compatibility
Front axle: 12x100 thru axle, easily convertible to quick release. Not compatible with 15mm through axles.

Intended use
ASTM CATEGORY 2: road and offroad with jumps less than 15cm
For a longer longevity of the wheel, Mavic recommends that the total weight supported by the wheels doesnn't exceed 120kg, bike included
Recommended tyre sizes: 25 to 32 mm.

Technologies

UST Tubeless Ready tyre
Traction, control and lightweight. The UST concept improves traction, control and comfort while reducing inertia and flats. The 'tubeless ready' construction results in a lighter tyre for improved performance.

QRM Auto bearing preload technology
Mavic latest innovation. Those cartridge bearings are of course double sealed with C3 internal clearance. Their preload is automatically adjusted to guarantee a perfect spin with no play on the long run.

SUP welding technology
Stronger and smoother joint
Soudé Usiné Process. After bending, the rim joint is arc welded. The welded seam is then milled for a smooth finish.

• Extremely strong rim joint
• Eliminates shuddering when braking
• Superior wheel balance

ISM 4D light rim technology
Inter Spoke Milling 4 Dimensions
An exclusive Mavic patented concept, ISM 4D significantly reduces weight and inertia without compromising durability. Quicker accelerations, better handling and more resistance ; the right mix to make the most of any ride. The smooth profile also helps reducing aerodynamic drag

• 15% lighter rim, the lowest inertia for instant acceleration, better handling and faster climbing
• Variable rim thickness optimizes constraints management for more reliability
• Smoother rim profile offers better air flow which reduces drag for higher speed

Fore tapeless tubeless technology
Stiffer and stronger
Instead of being drilled, the lower rim bridge is pushed up on the inside, then threaded to enable the spoke nipples to be directly screwed in it, leaving the upper rim bridge intact.

• Rim is 4 times more resistant to fatigue stress
• 20% increase in the rim rigidity to maximize power transfer
• No rim tape is needed(no added weight), for easier tubeless set up and maintenance and more reliable air tightness

Included

• UST valve and accessories
• User guide