The 500-HP Dodge Viper V10 Motorcycle That Hit 207 MPH Is Now For Sale
Allen Millyard has built some genuinely unhinged machines over the years, but his Viper V10 motorcycle stands apart from everything else in his catalog—and everything else on the planet. Completed in 2009, the hand-fabricated British one-off squeezes a full eight-litre Dodge Viper V10 into a motorcycle chassis, producing 500 bhp and a verified top speed of 207 mph. It has never been offered for sale. That changes now.
The bike will be listed for sale next month, making it arguably the most extraordinary private motorcycle transaction in recent memory. This is not a kit build or a heavily modified production machine—it is a ground-up fabrication requiring a custom frame, bespoke fuel and cooling systems, and a purpose-engineered drivetrain to mate a ten-cylinder car engine to two wheels. There is no other one like it.
How Millyard Made a Car Engine Fit on Two Wheels
The engineering challenge at the heart of this build is not subtle. The Viper’s 8.0-litre V10—the same unit that powered the original Gen I and Gen II Dodge Viper—was never designed with motorcycle packaging in mind. It is a long, wide, heavy lump built for a purpose-built American sports car with a dedicated space-frame chassis around it. Adapting it to a motorcycle required Millyard to fabricate essentially everything from scratch.
The frame had to be designed around the engine rather than sourcing an existing chassis and working backward. Cooling presented its own problem: the V10 relies on a liquid-cooling circuit sized for a car, which meant custom radiator placement and plumbing that could handle the thermal load without adding unmanageable bulk. The fuel system required similar attention—eight litres of displacement drinks fuel at a rate that standard motorcycle tanks and fuel delivery components simply cannot support. Millyard solved each problem individually, by hand, in his workshop. The result is a machine where every major system is one-off.
The First Production Motorcycle To Make 200 Horsepower
Kawasaki’s aerospace division built a custom supercharger that made the this the first production bike to hit 200 horsepower.
The MCN Runway Test That Confirmed 207 MPH
A claimed top speed on a one-off build means very little without independent verification. Millyard got it: Motorcycle News conducted a formal runway test and clocked the V10 bike at 207 mph, a number that puts it in the same conversation as purpose-built hypercars and well above anything wearing a production motorcycle badge at the time.
For context, 207 mph was faster than a stock Bugatti Veyron 16.4‘s published top speed when the bike was completed in 2009, and it remains quicker than most production superbikes available today. The MCN test was not a rolling-start GPS estimate or a dyno extrapolation—it was a documented, controlled runway run, which is why the figure carries weight. That verification is part of what makes this listing significant: the speed claim is not folklore.
A First-Time Sale, Seventeen Years After Completion
Millyard finished the V10 motorcycle in 2009 and has kept it since. The listing marks the first time the machine has been offered to anyone outside his own hands—seventeen years of single ownership on a bike that was extraordinary the day it was completed.
For collectors in the extreme-build space, that provenance matters. This is not a barn find in the traditional sense—it is a known quantity, with documented history, a named builder with a traceable reputation, and an independently verified performance figure attached to it.
The Viper V10 bike is the most extreme thing he has produced, and by most measures the most extreme motorcycle build to come out of Britain. When it crossed 200 mph on that runway, it validated not just the engineering but the entire philosophy behind Millyard’s approach: that a single builder, working alone with hand tools, can produce something that outperforms almost everything built by teams with unlimited budgets. Whoever buys this machine is not just acquiring a fast motorcycle—they are acquiring a piece of work that genuinely cannot be replicated.
Gearheads who have followed Millyard’s career know this sale will not sit on the market long. A 500-bhp, 207-mph, hand-built V10 motorcycle with a clean ownership history and an independently verified speed record is the kind of thing that surfaces once. If it belongs in a collection, now is the time.
Source: Motorcyclenews, Carscoops, Thedrive
Related posts
Latest Post
No Comments