The Millyard Viper V10 is a one-off hand-made, road-legal motorcycle capable of over built by British engineer Allen Millyard. The motorcycle weighs , of which is the engine. Sourced from eBay and originally intended for a Dodge Viper, the 8-litre V10 engine produces at 4,800rpm.

A front subframe mounted to the engine carries the steering and suspension, with the front forks crafted using hydraulic ram components with springs by Hagon. A rear subframe carries suspension created using two monoshock units from the Yamaha R1 model.

Millyard aims to reach with this bike. In early speed tests, it surpassed . Millyard Viper V10 | Motorcycle Review by Ron Lieback April 18, 2010 The bike has been clocked at at the Bruntingthorpe Proving Ground.

On 25 May 2023, rider Allen Millyard, together with passenger television presenter Henry Cole, achieved the fastest tandem motorcycle world speed record, ratified by Guinness World Records at , beating by two mph the previous record held by an American couple for over 10 years. The record was set using the long runway at Elvington Airfield, North Yorkshire, England.Fastest speed on a tandem motorcycle Guinness World Records. Retrieved 30 January 2024Cole & Millyard set new speed record 2-up henrycole.tv, 24 August 2023. Retrieved 30 January 2024'It's got to be done': Millyard and Cole set sights on 200mph pillion record after previous run recognised by Guinness Motorcycle News, 24 August 2023. Retrieved 30 January 2024

See also Boss Hoss Dodge Tomahawk List of motorcycles by type of engine MTT Turbine Superbike

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