Home2020 Alloy Aero Wheels

2020 Kinetic-One “K1-42ST“ Wheelset (HEAVY RIDERS TO 150kg)

2020 Kinetic-One “K1-42ST“ Wheelset (HEAVY RIDERS TO 150kg)




INTENDED USE:  The K1-42ST is the new ULTIMATE STRENGTH version of our best selling K1-42TL deep section alloy aero wheelset. The ST stands for ‘SuperTough’. Our toughest ever aero Clincher/Tubeless wheelset. FOR RIDERS UP TO 150KG.

We believe it is the only tubeless ready wheelset available anywhere aimed at heavier riders.


Tough enough for the hilliest and roughest of Sportives, Fast-accelerating enough for the busiest of bunch races and FULL-ON aero to ensure that you gain every possible watt of drag reduction IN TIME TRIALS AND TRIATHLONS.

Beautifully finished with a stunning matt Gunmetal black finish,  superbly strong UTILISING TRIPLE-WALL rim technology, and packed full of all the latest rim tech for heavy riders and the heaviest duty riding.

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).

Utilising strengthened versions of all the components on our K142TL wheelset, including being built with incredibly strong hubs and 32x3cross spokes per wheel - This is a super-aero road/TT/Tri wheelset aimed specifically at heavier riders.

Features a superb new wider rim profile compatible with both clincher and tubeless tyres and designed to be so strong it can even be used on tandems. Slightly wider rims are the future of road wheels. They enable seamless tyre interfaces for max aero gain, they allow for wider tyres for shorter 'contact patch' and less rolling resistance. Superbly aero and comfortable too - they will take a tyre from 25c up to 40c width!


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.

The balance in the rim is fabulous - and from a geeky wheelbuilder point of view they build up to almost perfectly even tension - with tighter tolerances than any other wheelset we have ever built. From a rider perspective a rounder, truer, faster wheel is the simple result. Sounds basic but this is what wheelbuilders strive for. The rims are all pinned, welded with milled sidewalls. So super strong with beautiful attention to detail. It takes many hours to build a wheelset so using top notch components makes that labour a real pleasure!

The 24mm wide TRIPLE WALLED rim has fabulous cross-sectional strength whilst maintaining a tiny weight. It represents the very apex of the latest developments in the understanding of how to balance forces and tensions in a wheel.

 It's a joy to be able to partner these rims with PSR and SAPIM RACE spokes (or Sapim FORCE if you are towards the higher end of the weight limit or need an even tougher wheelset!)

If you're under 130kg you can go for the Miche Italian steel-axled hubs - if you are heavier or simply want the most durable hubs we use, go for the beautifully made Bitex BX103 hubs, with Japanese ezo bearings. The rear hub has an incredible 6 bearings and the front hub has 4. The unusually high number of bearings ensures lasting smooth rolling for heavier riders - distributing the weight across more bearings than conventional hubs.



RIM Super tough 42mm deep TRIPLE WALLED alloy Clincher/Tubeless compatible
HUB Miche or Bitex BX103 6-Drive hubs
BEARINGS Sealed Cartridge throughout – All hub types
SPOKES PSR Aero, Sapim Race Black or Upgrade to Sapim Force
NIPPLES Alpina Blu power Nyloc Self-locking (the best!)
RIM TAPES Included
WEIGHT ​​​2150 grams
Advised Rider weights 150kg 

 Shipping Weight (Box plus wheels)

Weight: 4kg

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