Kinesis Racelight Aithein takes shape

New superlight aluminium road bike from Kinesis UK gets closer to completion

by Mat Brett   March 23, 2013  

We got a quick look at the nearly ready Kinesis Raceight Aithein aluminium road bike out at Taipei Cycle. We showed you the first incarnation when it was displayed at Core Bike Show in January and designer Dom Mason told us about it in an interview earlier in the year too. The new model had just been delivered after manufacture.

In brief, this frame is made using superplastic forming (SPF) – a process that’s patented by Kinesis. High temperature makes the tubing ‘plastic’ with heated compressed air shaping it in a steel mould. SPF allows Kinesis to use very narrow wall thicknesses without the risk of splitting tubes, because this is a method they can control very accurately.

This incarnation is different from the one that we showed you before in that it now has the correct BB386EVO standard bottom bracket for extra stiffness and plenty of chainset compatibility.

The cable stops have been moved higher up the head tube too so that the gear cables will run closer to the down tube. They have to be positioned on the head tube, by the way, because the down tube walls are too thin to accommodate them.

As you can see, the head tube is tapered while the seat tube is asymmetric, bulging out on the non-driveside for stiffness and much flatter on the driveside where the space is needed for the chainset.

Kinesis UK reckon it’ll weigh about 1,200g in a size 56cm. This is the frame straight after being welded, obviously, without any machining.

It’ll eventually be tidied up and orange, a little like this Photoshop rendering. There will be extensive lasering for the finish too. It should look pretty special.

For more info, check out our previous interview with Dom. Kinesis should have the finished product within weeks. When they do, we’ll be sure to let you know because we have first dibs on trying it out.

8 user comments

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I don't really know why but I am really excited by this bike, can't wait to get my hands on one. In fact I'm sure Dom is getting sick of me pestering him about it on Twitter!

posted by mustard [72 posts]
23rd March 2013 - 16:06


Not really sure about that head tube though - proportions look wrong re rest of the bike?


posted by pastaman [261 posts]
23rd March 2013 - 19:29


Frames are being finished now, they will be anodised Orange and anodised Black, with laser etched graphics + special
decals for anodised finish for the contrasting stripes etc.

The headtube needs to be that size to accommodate the taper 1.5 fork, I kept the frame tubes the size they are because I wanted the ride quality to be spot on and didn't want to go for really oversized top and down-tubes.

Once the frameset is built as a bike, it all looks nicely in proportion. We are building 2 bikes and will have exclusive first test, so watch this space...


M∆SON Cycles.

Dom's picture

posted by Dom [132 posts]
27th March 2013 - 11:56


Whoop! Big Grin

posted by mustard [72 posts]
27th March 2013 - 12:04


Did I read somewhere that this frame will have a rider weight limit?

othello's picture

posted by othello [341 posts]
27th March 2013 - 12:12


Any news? Wondered if this will be available before start May?....

posted by richardvaltos [18 posts]
13th April 2013 - 22:26


just heard that it's late May .... still WANT Smile

still on the 3rd switch-back of Bwlch !

posted by therevokid [925 posts]
16th April 2013 - 13:28


Too late May more like. God dammit!

posted by richardvaltos [18 posts]
23rd April 2013 - 17:20