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  • Product description

    When disc brake technology started to appear on road wheels, it was natural for us to develop a compatible wheel based on our iconic Ksyrium Pro SL. But disc brakes also throw up a unique set of challenges, so it was a huge benefit to fall back on our experience designing mountain bike disc wheels. The end result is this do-it-all wheel that excels on most rides: flat or hilly, training or racing.

    Versions:

    Shimano/SRAM | 6 bolt disc | 25c tyres

    Campagnolo | 6 bolt disc | 25c tyres

    Shimano/SRAM | Centre lock disc | 25c tyres

    All versions are clincher, 11 speed compatible


    Brilliant brake torque

    The biggest difference between the two braking systems is that braking with discs displaces the brake forces from the rim to hub, moving them further away from the ground. To make its way from the hub to the ground, the braking torque is distributed through the hub, spokes and finally the lower rim. So the spoke dimensions and lacing pattern needs to be tuned accordingly.

    The braking load is higher on the front wheel since the center of gravity is transferred to the front of the wheel when the bike is decelerating. Thus, the front wheel needs to be overbuilt with more spokes (20 instead of 18) and those spokes need to be crossed on each side of the wheel to make sure the brake torque will be efficiently and evenly distributed.

    The lower part of the rim also undergoes higher stress than a rim brake wheel. This stress is about the equivalent of the pedalling torque so what the rear rim can withstand in traction, it can also stand when braking. The front rim however, needs to be redesigned and gets the same dimension as the rear rim, also benefitting from asymmetrical design as the disc creates asymmetry in the wheel dish.


    Matching Yksion Pro tyres

    To make sure all this extra stopping power reaches the ground, Ksyrium Pro Disc comes with our Yksion Pro tyres in 25mm. They offer a supple 127 TPI casing, Kevlar beads, a well-balanced rubber compound that offers the best blend of grip and rolling resistance and a weight of only 205g in 25mm.

    The front wheel comes with the Griplink version that offers a specific tread pattern to evacuate water quickly when cornering, increasing confidence and speed in difficult conditions. It also offers very strong Kevlar puncture protection for added safety.

    The rear wheel comes with the Powerlink version, which sports a more supple nylon puncture protection instead of Kevlar to lower rolling resistance. To reduce rolling resistance and increase speed even further, the tread pattern is optimized to reduce the pressure on the ground, while improving water evacuation from the center to increase traction and efficiency in wet conditions.

    Fully compatible

    The front wheel is compatible with the three existing retention systems and can be easily converted from quick release, to 12mm or 15mm through axles using the adapters gived. The rear wheel is quick release compatible only. As for rotor mount, both wheels exist in International 6 Bolts and Center Lock.

    Key Features:

    Disc specific rim shape

    Disc friendly spoke geometry and lacing

    Brake torque resistant hubs, including 15 mm front compatibility

    New extra light ISM 4D rims

    Light and strong Zicral spokes

    Isopulse lacing for superior stiffness under high lateral loads

    New 25 mm Yksion Pro tyres, featuring GripLink / PowerLink concept

    Proven Ksyrium reliability


    Weight:

    Tyre 700x25: 210 grams

    Pair without tyre: 1535 grams

    Front without tyre: 680 grams

    Rear without tyre: 855 grams


    Rims:

    Material: Maxtal

    Height: 26mm, asymmetrical

    Joint: SUP

    Drilling: Fore

    Disc brake specific profile

    Weight reduction: ISM 4D

    Valve hole diameter: 6.5 mm

    Tyre: clincher

    ETRTO size: 622x15C

    Recommended tyre sizes: 23 to 32 mm


    Spokes:

    Material: Zicral

    Shape: straight pull, bladed

    Nipples: Fore integrated aluminum

    Count: 20 front and rear

    Lacing: front crossed 2, rear Isopulse


    Hubs:

    Front body: carbon with aluminum flanges

    Rear body: aluminum

    Axle material: aluminum

    Adjustable sealed cartridge bearings

    Freewheel: FTS-L steel

    Front: Quick release, 12 thru and 15 thru compatible


    Tyre:

    Yksion Pro GripLink (front) & PowerLink (rear)

    Front and Rear Tread: Single Compound

    Casing: 127 TPI

    Breaker: Front Kevlar, Rear nylon

    Dimension: 25-622 (700x25c)

    Max. Pressure: 25mm 7.7 bars - 110 PSI


    In the Box:

    Quick release skewer/s
    • (Front wheel = 1 X QR skewer)
    • (Rear wheel = 1 x QR skewer)
    • (Pair = 2 x QR skewers)
    Rim tape
    Front QR adapters (supplied with purchase of front wheel or pair)
    Rear QR adapters (supplied with purchase of rear wheel or pair)
    Specific disc bolts
    User guide


    Recommended weight limit : 120kg

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