Let customers speak for us
I have cycled more than 300,000 miles on many different high end bicycles and brands. I already have a couple sets of WinSpace wheels so I thought the SLC 5 could be a great bike. I've only ridden it 3 times on the road (terrible winter weather here) but I am impressed with the ride and the Mirage paint job. I have railed some downhills and corners and the SLC 5 handles as well or better than my other bikes. It is fairly comfortable, too.
Wesley King
SLC5.0 Ultegra Di2
Ruote rigide e performanti, ottime anche in salita.
Cristiano
Lún HYPER 23 SE D45 Disc Brake Wheelset
Good quality frame. Everything fitted seamless. Looks aero and a real race machine.
Tyre clearance for 50mm mtb tyre and still enough space for mud and dirt to pass. Clearance in the front even bigger.
Good bike for good price.
Wouter DG
G3 Gravel Bundle
Just what I needed on my brand new Winspace G3 Gravel bike, thise wheels just make the ride feeling in full control, Just perfect.
Henrik M. Jensen
Lún Gryper
Light frame set, nice and accurate protuction.
Realy happy with the outcome of a light gravel bike ready to tackle the mud!
Gunnar Atli Friduson
G3 Gravel Bundle
Stuur ziet er geweldig kan niet wachten deze uit te proberen!
Joost Greven
HYPER Integrated handlebar
Hi. Yes in fact I got just a couple of weeks ago. I love it. It looks great. The job paint is flawless. Sounds great. I have not had the chance to ride it, the weather is not on my favor. I will get back to you as soon as I can take it for a ride. Thanks
Anonymous
T1600 Ultegra Di2
Winspace Endurance Di2 Series: Professional Carbon Road Bikes for Long-Distance Performance
Winning on the road often depends on how long a rider can maintain high power outputs without succumbing to fatigue. The Winspace Endurance road bikes collection addresses this by balancing aerodynamic efficiency with an ergonomic geometry designed for high-mileage sustainability. Since 2008, Winspace has focused on delivering carbon fiber road bike builds that remove the "brand tax" of legacy labels, providing UCI-certified frames spec'ed with professional Shimano Di2 electronic shifting.
Our Endurance series is defined by three core advantages:
- Reduced Fatigue: A higher Stack-to-Reach ratio allows a more upright position, alleviating strain on your lower back during 100km+ rides.
- Electronic Precision: Shimano Di2 groupsets provide effortless, perfect shifting even when your hands are cold or tired after hours in the saddle.
- Modern Versatility: A Disc Brake Road Bike platform with 32mm tire clearance ensures confidence on varied road surfaces and unpredictable weather.
The C5 Series: Your Strategic Edge in Gran Fondos
The Winspace C5 platform focuses on "Fast Comfort"—ensuring that a more compliant ride does not mean a slower ride. Unlike traditional race frames that demand an aggressive, low-profile stance, the C5 series preserves energy for the climb ahead.
C5 Di2: The All-Day Performance Standard
This build is for the rider who values structural reliability and smooth power transfer.
- Vibration Damping: A specific carbon layup in the seatstays filters out road buzz, keeping you fresh into the fourth hour of your ride.
- Precision Specs: Available with Shimano 105 or Ultegra Di2, paired with Lún carbon wheels to minimize rotating mass on steep gradients.
C5 Aero Di2: Endurance Meets Aerodynamics
Why choose between comfort and speed? The C5 Aero Di2 utilizes truncated airfoil tube shapes to minimize drag while maintaining the stable handling of a dedicated endurance frame.
- Aero-Efficient Design: Truncated wing shapes on the head tube and down tube cut through wind resistance while maintaining vertical compliance.
- Total Integration: Features a fully integrated cockpit to keep hydraulic lines hidden, providing a professional, clean aesthetic.
Technical Specifications and Professional Standards
At Winspace, we maintain full transparency regarding our materials and testing protocols.
| Material | T800 and T1000 High-Modulus Carbon Fiber |
| Braking | Hydraulic Disc Brakes (Flat Mount Standard) |
| Drivetrain | Shimano Di2 Electronic Shifting (105 / Ultegra / Dura-Ace) |
| Bottom Bracket | T47 Threaded Standard for creak-free maintenance |
| Tire Clearance | Optimized for 28mm–32mm road tires |
| Certification | UCI Approved for Sanctioned Competition |
FAQ: Insights for the Informed Rider
What is the difference in an endurance bike vs road bike comparison?
An endurance bike features a geometry with a taller head tube (higher Stack) and a shorter Reach. This allows for a more sustainable riding position. Endurance frames like the C5 also have increased tire clearance for 30mm or 32mm tires, providing better grip than standard road bikes.
Which Di2 groupset should I choose: 105 or Ultegra?
For most riders, Shimano 105 Di2 offers the best value, providing the same wireless shifting speed as higher tiers. Ultegra Di2 is ideal for those looking to save approximately 250–300 grams and who desire Hyperglide+ technology for smoother shifting under high pedaling loads.
Is the Shimano Di2 system difficult to maintain?
Once set up, Di2 requires almost zero maintenance because there are no cables to stretch or fray. You only need to charge the battery once every few months, depending on your shifting frequency.
Can I use these endurance bikes for racing?
Yes. Both C5 and C5 Aero frames are UCI-approved. While the geometry is more comfortable, the high-modulus carbon construction ensures they respond efficiently during sprints and climbs.