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2011 Yamaha YZ250 Project Bike Photo Gallery

Pro Circuit and Factory Connection were turned loose on a 2011 Yamaha YZ250 to build a top-notch 2-stroke. Check out what was done to our YZ250: 2011 Yamaha YZ250 Project Bike

Slideshow
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Pro Circuit's porting and head work matched with a Works Pipe and R-304 silencer allowed the Yamaha YZ250 to achieve some respectable numbers on the MotoUSA dyno.
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The Pro Circuit Works Pipe not only was a perfect match with the cylinder and head modifications, but it also looks dang cool.
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The key to 2-stroke power is the flow of gases, and the Pro Circuit R-302 Silencer is the last piece of the equation on the MotoUSA 2011 Yamaha YZ250 Project Bike.
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Our test rider preferred the Tag Metals 49-tooth rear sprocket in comparison to the 50-tooth stocker.
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Factory Connection tuned the rear suspension of the 2011 Yamaha YZ250 Project bike to be plush but also to handle big air.
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Factory Connection stiffened up the front forks while still allowing a plush feel on the small chop and braking bumps.
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The 2011 Yamaha YZ250 is a great bike to toss around, and the added power from Pro Circuit makes an already fun package even better.
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In stock trim, the YZ250 wanted to stand up in hard corners when the compression setting was set up for big jumps. Now with the Factory Connection suspension tuning, slamming turns is no problem.
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The 2011 Yamaha YZ250 Project Bike's Factory Connection suspension allows the rider to go faster through the chewed up sections of track that were problematic with the stock suspension.
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The Pro Circuit engine modifications paired with the Works Pipe make for power that is on par with the latest crop of 450 motocross bikes.
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The 2011 Yamaha YZ250 is an excellent option for amateur racers with a low cost of performance modifications and maintenance.
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Any worries of harsh landings on big jumps has been neutralized by Factory Connection.
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Our test rider Scott Simon said if he was to buy his own bike he would buy a 2-stoke for the ease of maintenance and cost of ownership.
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The Yamaha YZ250 is light and to Scott Simon that means fat whips. The modifications by Pro Circuit and Factory Connection made it that much easier for some serious fun on the jumps.
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Pro Circuit and Factory Connection worked their magic on MotoUSA's 2011 Yamaha Project Bike. The end result was a racer that was not only good looking but also fast.