Kinetic-One “K1-40UC” Carbon Wheelset
Kinetic-One “K1-40UC” Carbon Wheelset
Kinetic-One “K1-40UC” Carbon Wheelset
Kinetic-One “K1-40UC” Carbon Wheelset
Kinetic-One “K1-40UC” Carbon Wheelset
2 reviews

£500 Off Clearance: 2022 Kinetic-One “K1-40UC” Carbon Wheelset





INTENDED USE: With weights as low as 1460 grams - This is the latest version of our  full carbon 40/40mm deep aero RIM BRAKE wheelset. Designed to create a fantastic ride performance, with superb braking, cushioning, cross-wind handling and heat dissipation.

It balances weight saving, all-weather handling and superb aerodynamics. Perfect for sportives, and multi-gradient and general road riding.

We offer super-lightweight build options for climbing fanatics - and a range of other build options prioritising robustness or low-drag.

Now in it’s fourth year of evolution - The 40UCcontinues to be one of the most popular wheelsets we produce and is an ideal upgrade for athletes seeking quality British handbuilt wheels on a ‘sensible’ budget.

-Our standard model is the “AEROLIGHT” (1540 gram) version - which employs Italian Ambrosio sealed hubs and invests in lightweight aero spokes to get weights down for more hilly/mixed riding.

- If you go for the SUPERAEROLIGHT build at 1460 grams, (with its 'All Season' Bitex hubs), then you really are creating a wheelset that is superbly aero and extremely light too - by any standard.

Your wheels will be hand built to order here in the UK by Andy Morgan, owner and founder of k1 wheels. (current build times are shown above).

Aimed at riders who prefer an ultra modern rim profile - critically without going too wide to cause frame clearance issues! The handling characteristics and strength of modern U rims is superb - even in pretty serious crosswinds - especially when compared to the V-rims of only a few years ago.

Ar 25mm wide, it is optimised for more modern bikes and is ideal for tyres from 25mm, 28mm,  right up to 40mm and beyond. Please make sure your frame can take a wider rim if you go for this option! Or contact us if you’re not sure... we do like to help our customers get it right first time.

Perfect for running tyres at lower pressure, whether you choose clincher or TUBELESS tyre setup!  And of course .......... far more aerodynamic and faster rolling than traditional hoops! 

In terms of rim width we think we've really hit the sweet spot. We carefully explored all of the many possible widths that aero wheels are being developed in. We developed and continually honed our own testing protocols to this effect - and critically we looked at a whole raft of practical "real-world" issues too that many rim makers simply overlook.

AND IF YOU NEED NARROWER RIMS:  we'll still have the right wheelset for you! And if you have an even narrower clearance frame - we can special order in some 23mm wide or even  20mm wide rims for you and we do find that's the only solution for users of many older bike models.



The 40/50UC wheelsets are ideal for UK roads and descents in all but the hottest weathers. If you are intending to ride/race very long descents in hot weathers (such as alpine summer sportives) or just want a more familiar braking feel - you may want to look at our full-carbon filament wound wheels.. and please do read our page on safe braking and care for your carbon wheels HERE

Technical Specification


700c 40mm Front / Rear, U-shaped, 25mm wide,  

Full Carbon Clincher rim - TUBELESS COMPATIBLE.  


FREEHUB FITTING SHIM/SRAM 7/8/9/10/11/12 or  CAMPAG 9/10/11/12 or XDR 11/12
HUB Italian sealed Ambrosio hubs, Super light Bitex 6-Drive hubs.
BEARINGS Sealed Cartridge throughout – All hub types
SPOKE OPTION K1 Aero, PSR Aero Bladed -  Ultra light/ultra aero versions.
Built. 20/20, 20/24 or 24/24
NIPPLES Alpina Blu power Nyloc Self-locking (the best!)
RIM TAPES Included
Carbon specific brake pads Included
WEIGHT (20/20 spokes)



weights XDR - add 15 gram Shim/Sram. (+/- 15 grams)


Customer Reviews

Based on 2 reviews
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Neil Phelps - Wokingham

Great deep wheels really well made and they roll superbly well . The customer service is excellent too. I would highly recommend Kinetic-One

Joe Doheny - Carlow, Ireland

These wheels have transformed my Cervelo R3. They spin really well and feel very stable. They look great too which is important. They definitely add between 1 and 2 kmh to my average speed. These are wheels which are of excellent quality and stand out from the crowd. Many thanks Andy

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