In the world of custom building, the frame is the bit you leave alone?unless you really know what you are doing.
Anyone can chop and loop a subframe, but creating a stress-bearing main frame from scratch takes patience, guts and familiarity with concepts like torsional stiffness and tensile strength.

That?s one reason the custom scene tends to develop slowly. But occasionally someone comes along and chucks the rulebook in the bin. Which is exactly what a father-and-son team from Greece have just done, with this incredible monocoque built around a BMW R nineT engine.
Dino and his son Marios Nikolaidis run DNA Filters, the company that makes some of the best aftermarket intake systems money can buy. They stunned us with their KTM RC8 a year ago, but they’ve really outdone themselves this time.
Marios grew up buzzing around on a little monocoque 80cc racer, and then studied Motorsport Engineering at London?s Brunel University.
That?s where the inspiration and the skills came from, and DNA?s in-house engineering team helped out too.

The honeycomb monocoque on ?DCR-018 Billet Sting? is CNC-milled from ten billets of 6082-T651 aluminum?a high-strength grade that?s easily machined and commonly found in everything from cranes to beer barrels.
After the honeycomb pieces were welded together, the geometry of the bike was fine-tuned with further machining. DNA have left the machine tool paths visible on the honeycomb, but clear anodized the frame to protect against oxidat...