Craftworx Ultima C50 Aero SL Carbon Road Wheels - Craftworx Cycling

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Ultima C50 Aero SL Carbon Road Bike Wheelset | 1423g*

Looking to go faster?  Then look no further.

At 1455 grams, the Craftworx Ultima Aero SL is the new standard for speed on two wheels. Weʼve distilled the very essence of riding fast into pure carbon fiber pleasure without making a single compromise on stiffness or durability.

Whether youʼre a budding amateur, a hardened rouleur, or a rider with a deep affinity for all-day soul rides in the mountains, the Ultima Aero SL is built to deliver effortless aerodynamics and best-in-class power transfer.
The 50mm deep wheel generates and maintains airflow attachment, reducing drag and thereby keeping your speeds higher for longer.

With low weight, and bomber durability, the Ultima C50 Aero SL achieves a rare trifecta of qualities that admit them to the hallowed pantheon of truly versatile wheelsets. Climb, descend, or prowl the flats with confidence knowing that youʼre ready for whatever the road can throw at you.

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The Craftworx Standard

Wondering how we achieve such a high standard? We do it one handbuilt wheel at a time in our Brisbane workshop. Our craft is building the best wheelsets available anywhere. Everything we create is built to meticulous standards that are constantly improved through marginal gains. With an industry-leading quality control practice in place, we are on the never-ending quest for wheel-building perfection.


The Ultima Aero SL carbon wheelset is equally at home racing UCI calendar bikes races and local after work group rides. Thatʼs because weʼve built them to the discerning standards of professionals like world-class triathlete Emma Jackson, who rode our Ultima Carbon wheels to two World Cup race podiums.

With invaluable feedback like hers, weʼve conclusively built the Ultima Aero SL wheelset to manufacturing standards that meet and exceed UCI testing requirements.



Our proprietary braking system resists heat build up.

Ultima Aero SL carbon wheels resist heat build up when youʼre flying downhill and apply the brakes.

Regardless of conditions, the Ultima Aero SL stop on a dime. Weʼve specially developed our proprietary carbon rim and brake pad system so that, when paired, create the perfect match.

Real Life Testing Conditions

Over a four-month training period in the Alps, world cup triathlete Emma Jackson barely scratched the surface of her Ultima Aero SL wheelset. All told, brake pad wear came in at a mere 55%, and there was zero wear on the carbon rims.

Ultima C50 Aero SL | Carbon Road Wheels | 1455g


Customer Reviews

Based on 1 review Write a review

*Wheelset weights will vary based on the configuration chosen.

Customer Reviews

Based on 23 reviews
Great experience end to end, completely recommended

I purchased a set of Ultima 38 Aero SL, both the product itself and the help I received were superlative.

I was interested in the 50s and the 38s, I asked about a mixed set, was told it'd be ok. After a nice yarn with Mark, it was clear that I needed a set of 38s, not a mixed 38/50. Mark didn't push me either way, just offered opinion and advice freely, which made it a very pleasant experience unlike when you go to a big box store and they simply try to push the most expensive item onto you ASAP.

I was offered a customized red set for which Mark sent the photos within 5 minutes of the call. Within an hour of putting in my order, they had it packed away and sent to the post office. I received it within a week, and had a question for which I sent an email. I got a phone call back within 1hr of my email. You just can't this kind of service anywhere else!

The wheels themselves are amazing. I've put them onto an old Cervelo Team Soloist, and it flies when my legs to their part. :) Compared to a set of Bontrager Aeolus 3s I have on my other bike, these are in no way inferior - I'd happily ride these against any other wheel on the market. I will be recommending these to my mates when they start getting the upgrade itch.

Thanks guys.


Ultima 38 Aero SL | Carbon Road Wheels | 1375g | 38mm Deep | 25mm Wide

No excuses

I don't have any excuses any more, these wheels are light and stiff and roll true and forever. Its now down to my legs! Great to see a local wheel builder doing good things. Highly recommend buying direct rather than via numerous middlemen, result being the consumer ends up paying margin on margin.

Aero SL Carbon 38/50

Awesome set of wheels, buy right, buy local you won’t be disappointed.

Amazing in every aspect

Having had a discussion with Nathan it was established that the C28’s would be the most suitable Wheelset for my needs, and I am very pleased with the quality and performance. Remarkable build quality!