The Corso California RT is a Hayabusa-engined trike from the US | Top Gear
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The Corso California RT is a Hayabusa-engined trike from the US

Three wheels, a carbon fibre body, a kerbweight of less than 500kg and an 11,000rpm redline. Blimey

Published: 13 Oct 2021
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Well, this is absolutely brilliant. Welcome to the Corso California RT – a three-wheeled, motorbike-engined reverse trike (hence the RT) that has been designed by Michigan-based company Corso Concepts.

As you can see it’s a little single-seater with full carbon bodywork and just a single rear wheel like a Polaris Slingshot. That helps with regulation in the US, as anything with three wheels can be registered as a motorcycle and doesn’t have to meet bumper height/windscreen rules. 

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As a result, the California RT only weighs around 450kg, whilst power comes from a 1.3-litre Suzuki Hayabusa engine that’ll rev up to 11,000rpm. Fantastic. You can use any generation of Hayabusa as a donor too – so up to around 200bhp is available. It also gets a paddle-shift sequential gearbox and a carbon ducktail spoiler is apparently in development. It just keeps getting better, doesn’t it?

The aim is for Corso Concepts to build between three and five California RTs a year, although if you’re handy with a spanner you’ll also be able to buy one as a kit to build yourself. If you fancy that, the RT will set you back $49,995. For lazy folk like us, it’ll be $69,995.

Thoughts, Internet?

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