BMW “Ignite Straight Six” Concept Bikes

Bike Design 28 Apr 2015
BMW “Ignite Straight Six” Concept Bikes

Japanese customizers Kenji Nagai of Ken’s Factory and Keiji Kawakita of Hot-Dock Custom-Cycles have created two original concepts reinterpreting the BMW’s K 1600 GTL flagship model.

The concepts, that are part of the Ignite Straight Six project, are radical modifications of the same production bike, the BMW K 1600 GTL equipped with a 1649 cc six-cylinder engine.

BMW Juggernaut and Ken's Factory Special Concept Bikes

The only retained relations to the original bike are engine and frame, and, in the case of Keiji Kawakita’s creation ‘Juggernaut’, the BMW Motorrad Duolever front suspension.

Ken’s Factory Special

BMW Ken’s Factory Special Custom Bike Concept

Kenji Nagai’s creation named ‘Ken’s Factory Special’ relies on hand-made aluminum girder-type front forks raked out in chopper style using a modified headstock.

BMW Ken’s Factory Special Custom Bike Concept

The K 1600 GTL’s original full fairing was replaced by a small aluminum front cowl housing the headlight and the stock rear subframe and seat were replaced by a low positioned aluminum seat.

BMW Ken’s Factory Special Custom Bike Concept

Kenji Nagai explains: ‘At first I had a bagger style in mind that grew out of the tourer image. But simply transforming a tourer into a bagger was a bit too obvious a choice. So I thought of a different approach. I settled on the digger style. The long, thin digger style would make the in-line six-cylinder engine look even more prominent.’

BMW Ken’s Factory Special Custom Bike Concept

The illusion of a dramatically low seat height and narrow motorcycle is enhanced by the use of a 23-inch front wheel and a 20-inch rear wheel.

More nicely manufactured details made from aluminum like covers for fuel tank and radiator or handlebars are completing Kenji Nagai’s artificial craftsmanship.

Keiji Kawakita’s ‘Juggernaut’ Concept

BMW Juggernaut Concept Bike

Keiji Kawakita’s ‘Juggernaut’ is a complete contrast by way of its dark, masculine stature. There’s no sign of minimalism here and the loud and proud appearance makes ‘Juggernaut’ rather looking like a synthesis of Mad Max metal and Jules Verne’s imaginations.

BMW Juggernaut Concept Bike

A skeleton of aluminum tubing broadens the naked K 1600 GTL’s chassis and instruments at each side of the fuel tank fit neatly with the military look. Reminiscences to the BMW Motorrad GS range are the dual fog lights and the front trail-like beak.

BMW Juggernaut Concept Bike

It’s a monumental feat and the desired custom finish was, according to Keiji Kawakita, inspired by history: ‘I found an old photograph of the cockpit of a convertible that looked like something from the near future, and I got the idea of making a bike that had that kind of atmospheric feel. Looking at the front forks and Duolever suspension, I thought I could do this with the K 1600 GTL. But the actual work was long and hard, a tough job to handle. Even when I finished, I still wasn’t really sure whether the work was complete. But that’s the thing about customizing, isn’t it?‘

(Source: BMW)


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  1. aflo

    These kinda make the Teutul’s work (Orange County Choppers, etc.) look like total garbage.


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