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MotoAmerica: Tech Details Of ARCH’s New Hooligan Racebike

By Michael Gougis
By Michael Gougis

MotoAmerica: Tech Details Of ARCH’s New Hooligan Racebike

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The second generation ARCH 2s-R under the team's awning at WeatherTech Raceway Laguna Seca. Photo by Michael Gougis.

ARCH Motorcycles unveiled the second iteration of its Mission Super Hooligan racebike at WeatherTech Raceway Laguna Seca. The main upgrades are to the chassis and swingarm, while the bodywork is heavily revised as well. In addition, the team announced that it would field a second rider, the mega-experienced Jeremy McWilliams, on a second bike for the next MotoAmerica Super Hooligan outing at VIRginia International Raceway. 

 

The Arch 2s-R features a new chassis with a massive aluminum headstock and beefy side spars that mount to the front and rear cylinders. There’s also new bodywork.

 

The biggest difference in the new machine is the chassis. The current version, which Corey Alexander raced at Laguna Seca, features a round-tube chassis with the model number KRGT2-001. The company offers a street-going KRGT-1 power cruiser with forward-mounted footpegs, suggesting that its first racebike was based on an adaptation of that chassis. The new 2s-R has a massive aluminum headstock and short spars that serve as mounting points for the front and rear cylinders.

 

Left side of the ARCH 2s-R. The new machine has a revised swingarm to accompany the new chassis. The new chassis shown at Laguna had footpegs fixed in one location, unlike the pegs on the prior model that had a wide variety of possible positions. Photo by Michael Gougis.
The swingarm pivots in a pair of aluminum castings that appear to bolt to the rear of the engine. Ohlins TTX shock handles suspension duties in the rear – when starting from scratch, it’s generally good to go with known quantities whenever possible. Photo by Michael Gougis.

 

The version of the ARCH 2s-R shown at Laguna had a powerplant from the original version of the machine. It has a five-speed transmission, while most of the other bikes in the Hooligan class have six-speed transmissions. “I’m behind the Harley-(Davidson) riders and I hear them shifting twice on the straight and I’m in the same gear,” rider Corey Alexander said at the prior round, held at The Ridge. The big Suter V-Twin spins to 7,000 rpm. Photo by Michael Gougis.
Jeremy McWilliams, far left, will ride for the ARCH team at the next round. Here, he poses for a selfie with a fan along with current rider Corey Alexander (back), ARCH co-founder Gard Hollinger (front) and Keanu Reeves. Photo by Michael Gougis.

 

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