INTENDED USE: With weights as low as 1330 grams - This is the latest version of our Premium full carbon 40/40mm deep aero 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 new AEROFLOW build with K1 aero spokes and the lowest drag hubs available anywhere, the Miche Primato. These add a little weight but being so fast and so very durable does make them a fantastic all round investment. Especially for heavier riders or those riding in all weathers.
- Or for very little more upgrade to our “AEROLIGHT” (1430 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 1395 grams, (with its 'All Season' Bitex hubs) Or the even lighter SUPERAEROLIGHT++ build at 1330 grams) then you really are creating a wheelset that is superbly aero and extremely light too - by any standard.
Or for the ultimate in resilience and exquisite engineering go for our DTSWISS 350 build.
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 wheelset is 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
|RIM||Full Carbon Clincher 700c 40mm Front / Rear, U-shaped, 25mm wide, Full Carbon Clincher rim - TUBELESS COMPATIBLE. UD MATTE CARBON|
|FREEHUB FITTING||SHIM/SRAM 7/8/9/10/11 or CAMPAG 9/10/11|
|HUB||Miche Italian sealed hubs as standard or upgrade to the Amazing Ambrosio hubs, Super light Bitex 6-Drive hubs. Or DTSWISS 350 hubs.|
|BEARINGS||Sealed Cartridge throughout – All hub types|
|SPOKE OPTION||K1 Bladed aero black as standard
or PSR Aero Bladed - Ultra light/ultra aero
|NIPPLES||Alpina Blu power Nyloc Self-locking (the best!)|
|Carbon specific brake pads||Included|
1515 GRAMS PER PAIR AEROFLOW VERSION
1430 GRAMS PER PAIR AEROLIGHT VERSION
1330 GRAMS PER PAIR SUPERAEROLIGHT++ VERSION
weights XDR - add 15 gram Shim/Sram. (+/- 15 grams)
|SUGGESTED MAX RIDER||110kg|
Shipping Weight (Box plus wheels)