Home2020 Deep Alloy Aero Wheels

2020 Kinetic-One “K1-42SL SUPERLITE” Deep Alloy wheelset (From 1587 grams)​​​​​​​ ​​​
24 reviews

2020 Kinetic-One “K1-42SL SUPERLITE” Deep Alloy wheelset (From 1587 grams)​​​​​​​ ​​​


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INTENDED USE:  A superlight deep section wheelset. And  we mean superlight for a deep section. As low as 1587 Grams!


Designed for Sportives, Bunch races and Triathlons (from Sprint to IRONMAN distance.) This is the 40mm deep 2020 K1-42SL. This is our best selling alloy deep section clincher wheelset! A high-end ALLOY aero wheelset for riders who want all the aero benefit and lightness of carbon - but want to stick with a more robust material.  

Your wheels will be hand built to order here in the UK by Andy Morgan, owner and founder of k1 wheels. Turnaround time is most often 7-11 days. (current build times are shown at checkout).

At 1660 Grams in standard " AEROLIGHT" setup with superb Ambrosio sealed hubs and high end PSR 1422 spokes. Aerodynamics can be maximised and weight reduced to 1597 grams approx by upgrading to the SUPERAEROLIGHT version with the lightest Bitex hubs and CXray spokes. The CX-Ray spoke is the most aero spoke available - anywhere!

The use of such wonderful components enables us to produce a true "pro-level" multi-functional aero wheelset, at a reachable price point. Please be aware this is a tough and light wheelset built for UK roads!



Offered With Full Warranty Plus A 14 Day "No Quibble Returns Policy" - If You're Not In Love With These Wheels The Moment You Get Them Just Send Them Back For A Refund Any Time Within 14 Days Of Receipt.

This wheel has a very specific place in our range (and in our hearts!). A semi deep section lightweight alloy wheel is the perfect "do-everything-wheelset" for multi-gradient triathlons, time trials and even sportives. Designed to run best with 25mm or 23mm tyres.

Light enough and comfortable enough to get you up those hills in good shape, (with silky smooth bearings to help even more), and aero enough to gift you free-speed on the flats and the downhills. .

We achieved this combination of aero/strength/lightweight - by marrying; the 
wonderful lightweight kinetic-one aero rim; with superlight hubs; and Sapim CX Ray spokes (which have the distinction of being the lightest, strongest and most aero of all aero spokes



RIM Aluminium welded Niobium Alloy BLACK -CLINCHER ONLY 40mm
HUB Ambrosio, Bitex Rar12/Raf12 6-drive hubs 
BEARINGS Sealed Cartridge throughout – All hub types
NIPPLES Alpina Blu power Nyloc Self-locking (the best!)
RIM TAPES Included
(weights campag - add 20 grams shim/sram)
Advised Rider weights 85kg  20/20 spokes
100kg 24/24 spokes
115kg 24/28 spokes


 Shipping Weight (Box plus wheels)

Weight: 4kg


Based on 24 reviews
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Mark C - South West

Bought a pair in October 2018 on the recommendation of a family member who owns a set of deep carbons for TTs.

Superb set of wheels, after nearly 5 months of pretty shocking welsh winter weather, still dead true and roll smoothly. On par with the weight of the stock 20ish mm bontrager's I had on before, and although I can't measure the aero benefit, they certainly feel rather speedy when you're pushing the pace!

Fantastic communication throughout the buying process, with Andy recommending the 42SLs and a spec based on my requirements.

10/10 nuff said.

Andy Peet - Oxon

Review: I bought my bike from Andy 10 years ago. 1000s of miles later it is still going strong and I love it. So when my old rims became paper thin, there was only one place I was ever going to go to buy replacement wheels.

But these aren't just any old wheels; I've been hitting PB after PB after PB. They hum beautifully and pull me along the flats, they are lighter and quicker up the hills and whistle sweetly in a cross-wind.

And they look fantastic too.

Charles - Derby

Excellent excellent Product and excellent service - though the courier was a day later than I paid for! Though thats not your fault i know. Thanks.

John Williams - Yeovil

I had Campag Zondas on my 2015 SuperSix but I wanted to get some deep section wheels to see what difference they made. Most of the carbon wheels these days have an external rim width of 25mm plus. The gap between the chainstays on my bike is not big enough to take those wheels. I also wanted alloy rims and the wheels to be light. I saw these after surfing online and I'm really glad I did. I bought the SuperAeroLight option. The first ride I really noticed how smooth the bearings were - wow - what a difference. Always wondered what a decent pair of wheels felt like. I've really noticed that my legs are fresher after longer rides.

Fantastic wheels, sooooo smooth! Great service!

Matt - Gloucester

Andy lied to me, I didn't become better looking, more successful or intelligent, however, I did get quicker!

On a serious note, lovely wheels (K1 42SL), so much smother and feels faster than my old ones.

phil stephens - devon

Extremely impressed with how true these wheels have been through full winter training..clean trainer every 3rd day of salt/grime..and they still look smart..bombproof ! update bought. thinner set with bitex hubs for sportives this year..and amazed with floating fast tubeless.....thanks andy

David Brown - UK

Susan Brown added another British Triathlon Championship yesterday, winning the Age Group Standard Distance at Leeds, so she now holds the "double". She was racing as usual on her Kinetic One wheels, which as usual were faultless and fast. The picture is the podium from Leeds, please feel free to use if you wish. (see gallery)

Neil Phelps - Wokingham

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

Paul Beaumont - Enniskillen

I took the plunge and purchased a pair of K142SL's. Best decision I've made with regards to upgrading my bike. These wheels just keep on running! I've knocked over a minute off a 10 mile TT and have found I'm up with at the front when it comes to the bunch sprint. Even when it comes to climbing they're no slouch. Cheers Andy. Great product.

Andrew Henderson - Notts

Have just been out on my best bike for first time since fitting your 42SL wheels (hence delay with feedback). Well i must say that i was immediately impressed with how taut the bike feels, no flex when climbing and i seem more able to push a higher gear, well pleased! Please find picture of Planet X badged Van Nic pro road, Campag Athena groupset and your brilliant stealth graphic wheels. Many thanks Andy, Retford, Notts