Craftworx Ultima Disc Rear Wheel for Time Trial/Triathlon - Disc Brake - Craftworx Cycling

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Ultima Carbon SL DISC - 3K - Rim Brake Wheel

$1,500.00 $2,290.00 YOU SAVE 34% ($790.00)

SL DISC  =  Pure Speed

WARNING:  DISC wheels are FAST!

Our DISC wheels are designed for serious racing and experienced riders. If you are not competing in triathlons or club time trials, there are other models that will be better suited to your needs.

Technically Advanced Engineering:

Our DISC wheels are nowhere near as simplistic as they look!

More than 3 years of R&D went into the design and construction of our DISC wheels. The technology hidden underneath the perfectly laid 3K and 12K carbon sheets blows my mind every time I see it. The prototype images you see here gives you a glimpse of what lies underneath the surface and a better understanding of why these DISC wheels are so dynamically efficient and effective.

Radiating out from the central carbon core are 8 I-Beam styled carbon supports which are in turn attached to the outer rim. This system has been engineered to optimize power transfer and structural strength while at the same time eliminating unwanted weight. Part of this weight loss plan includes the use of (what our composite engineers call) "structure" foam. The structural foam core is incorporated into the carbon layers, providing additional strength and support to key areas of the wheels design while minimizing weight gain.


The SL DISC has a single design purpose, to go faster for longer, using less energy. To achieve this we focused on 3 key design elements.

1. Power Transfer: Underneath the perfectly laid 3K carbon skinincreasing torsional and lateral stiffness in the wheels, which in turn transfers power more efficiency. This means it takes less energy to generate more speed.

2. Centrifugal Force: The heavier rotational mass of the SL DISC increases the effects of inertia (momentum) as your speed increases. This means it takes less energy to maintain high speeds.

3. Advanced Aerodynamics:SL DISC outer shape is designed using high tech computer program to create what we term, an "Aerodynamically Accurate" profile.

Rim External Width:27.5mm

Rim Internal Width:Wide 21mm

Compatible Tyre Widths: 25mm - 28mm

Weight: 1320 grams

Shimano HG
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