Redefining Alloy Performance
ULTIMA RX
Transform your ride with the ULTIMA RX.
Weighing just 1,454 grams, it’s an uncompromising fusion of lightweight agility, superior ride quality, and durability. As the lightest alloy road disc wheelset in the Ultima Series, it’s built for cyclists who demand performance, speed, and comfort. Whether you’re conquering steep climbs, carving through technical descents, or chasing personal bests, the ULTIMA RX is designed to deliver unmatched performance and ride quality.
Shipping $29.95 Australia Wide
Why Choose ULTIMA RX?
Effortless Climbing
Shed the extra weight and feel the difference on every ascent. At 92 grams lighter than the SLD LITE, the ULTIMA RX delivers faster, more efficient climbing performance.
Precision Handling
Exceptional responsiveness and control let you tackle descents with confidence, your bike will feel more maneuverable and surefooted going into and out of bends and when cornering.
All-Day Comfort
Enhanced compliance minimizes road vibrations, delivering a smoother, more comfortable ride, even on rough road surfaces. The benefit? You feel less fatigued on and off the bike.
faster acceleration
Lighter rotational mass and the 45-tooth ratchet drive hubs work together delivering instant power transfer. Sprinting out of the saddle or surging out of corners, ULTIMA RX responds with speed and enthusiasm.
UNDERSTATED STYLING
PURE PERFORMANCE
From the start, Craftworx set out to create dynamically balanced wheels that deliver an exceptional riding experience. The ULTIMA GEN3 Series is the culmination of over a decade of relentless innovation, combining advanced materials, cutting-edge manufacturing techniques, and modern, minimalist styling.
The sleek, clean lines and refined design aren’t just for show—they embody the confidence, precision, and performance these wheels deliver on every ride.
CRAFTWORX ULTIMA SL
Premium Alloy Rims
Crafted from advanced T6 6069 aluminum alloy, the Ultima SL rims achieve the perfect balance of strength, lightweight performance, and ride compliance. With a 20mm internal width, they are designed to pair seamlessly with 28mm–32mm tires.
Running tires in this range increases volume,
providing a more stable and comfortable ride while reducing rolling resistance for greater efficiency. The wider setup flattens the contact patch, enhancing grip, control, and overall handling.
FASTER BY DESIGN
RATCHET DRIVE HUBS
The all-new high engagement, R-Series ratchet drive freehub system features a 45-tooth mechanism that delivers instant power transfer and improved climbing efficiency.
By delivering faster engagement and a more direct connection between pedal strokes and forward motion, these hubs enhance responsiveness and provide a competitive edge on steep climbs and technical courses.
Wheel Specification
ULTIMA RX
Disc Brake Compatible Model
Combined Wheel Set Weight - 1,454 grams
- Front Wheel - 675 grams
- Rear Wheel - 779 grams
Max. Rider Weight - 95kg
Tyre Compatibility
- Tyre Widths: 25mm - 32mm
- Hooked Style Tyres
- Clincher (with tubes) or Tubeless
ULTIMA SL Rims - GEN3 Model
- High Strength Blended 6069 T6 Aluminum
- Invisible Welded Join for Max. Strength
- Tubeless Ready
- Hooked Tyre Bead
- Disc Brake Specific
- Aerodynamically Accurate Profile
- External Rim Width - 24mm
- Internal Rim Width: 20mm
- Sand Blasted Surface with Anodized Finish
- Lazer Etched Graphics
Craftworx R Series Hubs
- 28H Front
- 28H Rear
- CNC Machined 7075 Body
- J-Bend Design
- Center Lock Compatible (can be converted for IS 6-Bolt Rotors)
- TPI Performance Series Bearings
- 45 Tooth Ratchet Drive Freehub System
SapimCX-Ray Blade Spokes
CX-Ray Spoke Benefits:
- Improved cornering stability
- More efficient power transfer
- A smoother, more compliant ride
Not only are they the lightest, strongest stainless steel spoke we use, they dramatically improve performance and ride quality.
Sapim Polyax Secure Lock Alloy Nipples
The secure lock system, when used with our specified thread lock compound creates an incredible strong and reliable long term build.
The Polyax system in addition to the special lubricant applied to the rim/nipple contact points ensures a smooth high tension build without any damage to the contact surfaces.
Hand-Built Excellence
HAND-BUILT By Craftworx
At Craftworx, precision isn’t just a goal, it’s a standard. Every wheel is meticulously hand-built in our state-of-the-art workshop by skilled wheel builders using proven techniques and meticulous attention to detail.
With decades of collective expertise, we ensure that every Craftworx wheel delivers the performance, reliability, and quality you expect.
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