Cyclistsย Hub is supported by its readers. We may receive a commission if you buy products using our links.
All content on Cyclists Hub is written by humans, not robots. Learn More
Winspace has officially launched the SLC5, its latest high-performance road bike frame, claiming the title of “All-Terrain Master” at Eurobike 2025. They introduced it alongside the new HYPER 5 wheelset, G3 gravel bike, and T1600 aero frame. The SLC5 targets riders seeking a lightweight, yet aerodynamic frame. By the way, Winspace skipped the SLC4 naming because number 4 is considered unlucky in Chinese culture.
At just 705 grams for an unpainted size Medium, the SLC5 is one of the lightest production frames Winspace has ever made, just slightly heavier than the SLC3 climbing frame. Considering the tubing, it’s a much lower weight than I would expect.
It is designed to compete with (and benchmarked in a wind tunnel directly against) the Specialized S-Works SL8; the SLC5 should bring elite-level performance to a broader audience. The wind tunnel data from Silverstone Sports Engineering Hub and Fuji Aero Performance Center are below:
The frame features a BSA-68 bottom bracket, offers 32mm tire clearance, and comes in five sizes. That tire clearance is today’s standard for road bikes. The frame is made of premium materials, including T1000, T1100, M65, and M46.
A fully built SLC5 with HYPER Light wheels and Shimano Ultegra Di2, weighted around 7.5 kg without bottle cages and pedals.
Positioned as the all-around sibling to the more aggressive T1600 aero frame, but more aggressive and performance-oriented Agile, the SLC5 rounds out Winspaceโs lineup of road frames.
Design-wise, it’s similar to the SL8 mentioned above, especially in the rear end, which seems similar. The head tube has a relatively sharp leading edge, similar to the T1600. This is a feature Winspace wants to implement on their future frames to unify the lineup. Of course, it also has sealed through axles, like the other Winspace frames.
Pricing and availability will be announced soon, but Winspace told me that this one will be a more premium frame, so I expect a price tag above $2000. UPDATE: The price for this frame is expected to be around $2800, and it will be available on the Winspace website starting from July 14th.
Use this Winspace discount code CYCLISTSHUB10 at winspace.cc or lunwheels.ccย during checkout to getย 10% OFFย your purchase. Share this code via email.
Very interesting. After building three Winspace bikes: T1500, T1550, SLC3 I thought I was done with China bikes. The SLC5 might be the one that pulls me back in.
The T series were absolute rockets and really only subtle changes have been made each gen up until the T1600, granted I don’t think D-Type Intakes makes much difference. The one bike that really caught my eye was the recent SLC3. Maybe I fell too hard for the marketing hype in comparing it to the Specialized Tarmac SL8, but for me it was 80%-90% of the performance of the Tarmac SL8 but just without the rear comfort or slight climbing ability due to the more flexy rear end. At the end of the day a Tarmac seems to be the bike everyone is benchmarking against, thus I sold my SLC3 frameset and just bought a Tarmac SL8.
It does seem Winspace has improved the aerodynamics of the SLC5, but again in my experience with the two bikes, the reason the Tarmac is the better bike isn’t weight or aerodynamics but compliance in the rear, which to be frank no Winspace or no China bike in my opinion has been able to replicate.
Thanks for your insights, Joseph. Yeah the SLC5 looks terrific. The question is how well they done the carbon layup. It would be interesting to test these frames side by side.
Honestly, they need to calm down a bit, it’s gonna be the 3rd new road frame (with a similar geometry) in one year.That said, I can see the merit in an upgraded climbing frame, but they are IMO overdoing it a bit with all the similar frames cannibalizing eachother’s sales.
I’m interested to see the stack height. I hope they have went for a higher stack height than the SL8. I think less spacers makes a bike feel much stiffer in the front end. If this is 10-15mm higher stack than the SL8, is be much more interested.
Yeah, let’s see!