What were you doing when you were 17? If you were anything like us, it definitely didn't involve inventing mountain bike braking systems that made testers such as Velotech.de go all funny.

Jakob Lauhoff has done just that, with a brake that he claims is more powerful than any other, using a patented hydraulic brake booster.

The system is a closed design without the reservoir typical of modern hydraulic discs but he says that it won't suffer from pump due to the large master piston.

We're dying to get a set to test at any rate....

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