|Spark Plug||NGK DCPR8E '04-08|
|Battery||YUASA YTX14-BS '04-08|
|Front Tire||120/70-17 '04-08|
|Rear Tire||180/55-17 '04-08|
The XB powertrain still had its roots with the Harley Sportster powertrain, and was designed for both projects. Unfortunately, it was designed by Harley with minimum input from Buell. A turbocharger was to be sourced from Aerocharger to help pump the XB horsepower to 150hp, but the Aerocharger supplier deal fell through and thus Buell began development of a turbo in-house. That project was a failure, despite "millions of dollars" spent.
Before the first XB was sold, the cost was well over the target, leading to a sales price increase from the original price point of $7995 to $9995. It was a popular bike, but never sold at Harley marketing departments expected volume, partly due to the significantly higher price.
- Motorcyclist.com Buell XB9R Firebolt road test
- Motorcyclist.com 2004 Buell XB12R and XB12S Motorcycles First Ride
- Anderson, Steve. "The Demise of the Buell Motorcycle Company", Cycle World, 2010-05. Retrieved on 24 March 2010.