Brand new 6.3kg bike from German company Storck will be limited to only 51 units

With thousands of bikes on show at the Cycle Show this weekend, German brand Storck was going to have to do something special to stand out. Something, for example, like unveiling the limited edition Storck Aernario Disc Signature, a bike that it is claiming is the world’s lightest disc brake road bike.

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So how light is it exactly? 6.3kg, meaning that it is 500g lighter than the Focus Izalco Max Disc that received its launch back in June (although Focus has been able to put together a non-production model that comes in 5.5kg).

storck aernario disc signature top tube

The Storck Aernario Disc Signature has been stripped off its paint in order to save weight

Ok, so compared to some of the latest lightweight rim brake-equipped bikes, the Storck Aernario Disc Signature is not super-light, and featherweights such as the 4.96kg Fuji SL, 4.55kg Merida Scultura 9000 LTD, and 4.4kg Ax-Lightness VIAL evo ULTRA hit it out of the park, put to put together a disc brake road bike for less than the UCI’s 6.8kg weight limit is still a very considerable achievement.


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The frameset is actually the same as that on the standard Aernario Disc that we reviewed last year, but has been stripped of its paint to give a raw carbon finish. Less is more, huh? This means that the frame now comes at less than a kilogram, and the fork less than 500g, complete with thru-axles both front and rear.

storck aernario disc signature disc brake

The disc brakes make it difficult to build a truly lightweight bike

The bike has been put together to celebrate company founder Marcus Storck’s 51st birthday, so as a birthday present to himself, he’s built the complete bike according to his dream specification.

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That means that you get Shimano Dura-Ace Di2 shifting (despite the fact that SRAM Red would have been lighter), Praxis Works chainrings, Storck’s own Power Arm cranks, seatpost and handlebars, and P38T rims from fellow German company Ax-Lightness, that at just 290g each, built around DT-Swiss hubs.

storck aernario disc signature

Each of the 51 bikes is signed by the man himself

So how much will all of this cost? Well, brace yourself, it’s £10,499. How does that sound? Still reaching for your wallet? Better move quickly then, as only 51 of these bikes are being produced, each of them signed by Markus Storck himself.