Allen Millyard's 500-Horsepower 'Viper V10' Motorcycle Up for Sale

How many of these engine-transplant builds has Millyard actually done?

Purely curious how high the auction hammer price will go.

Even among Millyard's body of work, this one seems to fall into a particularly off-the-charts category.

An extreme multi-cylinder bike like this should be judged on artistic merit rather than practicality.

500bhp — just the number alone gives me chills, truly a flagship example of the off-the-charts category.

Building a bike around an 8.0-liter V10 is on a whole different order of scale.