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Dirt Bike Project Bikes

Motorcycle USA holds onto these dirt bikes for some long-term testing and product evaluation. Read the results on the dirt project bike page.
Featured Dirt Project Bikes
Ride Engineerings 2015 Suzuki RM-Z450
Tuesday, March 31, 2015
Ride Engineering adds a host of goodies to improve the performance of the 2015 Suzuki RM-Z450, so we took the machine to LACR MX to see how the upgrades translate to the dirt.
2014 Kawasaki KX250F Project Bike
Thursday, May 22, 2014
We continue to rack up the hour meter around tracks and trails on our long-term Kawasaki KX250F motocross bike with some interesting results.
2013 Yamaha YZ250F Project Bike
Monday, December 30, 2013
We keep our long-term YZ250F running tiptop with routine maintenance and high-quality components from Yamaha and the aftermarket.
MotoUSA Staff Motorcycles - Suzuki RM-Z450
Thursday, November 21, 2013
Suzuki’s 2012 RM-Z450 is one of our favorite motocrossers. So much so, we purchased one second-hand and build it into the ultimate motocrosser.
Honda CRF450R Project Racing Loretta Lynns
Friday, October 25, 2013
Loretta Lynn’s is one of the toughest tests of rider and machine. MotoUSA’s friend and veteran motocross racer Kevin Foley chases a 10th Championship at the historic race.
2013 Honda CRF450R Project Bike
Wednesday, July 31, 2013
Find out how MotoUSA's long-term CRF450R performs as it racks up time on the clock riding on trails, tracks and desert.
2012 Honda CRF450R Project Bike
Friday, September 28, 2012
Replacing wear and tear components is a part of dirt bike ownership. We upgrade our Honda CRF450R with some hard parts from Pirelli and Renthal in this project bike test.
2012 Yamaha YZ250F Project Bike Wrap Up
Friday, September 07, 2012
We continued to ride our 2012 Yamaha YZ250F project bike and made some final modifications before returning it to Yamaha.
Product Guides
Choose the right lid with this motorcycle helmet guide.
Leather, textile or mesh? Find out more in this motorcycle jacket guide.
Motocross boots, road racing boots and criuser boots, they're all here.
Protect your hands with info gained in this motorcycle glove guide.
Find out the basics of motorcycle luggage in this gear guide.
Tires are your direct contact with the road. Find out more in this tire guide.