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Pricing: MSRP - $6,490

http://www.cleanmpg.com/photos/data/523/2010_Yamaha_WR250X_Specs_Top.jpg

Detailed Specifications

Dimensions|Air Filter|Transmission|Rear Wheel
Overall Length: 83.1 in.|AF Element: Wet Foam|Primary Reduction: Spur Gear|Rim Size: 17x4.00 in.
Overall Width: 31.9 in.||Ratio: (78/25)|Tire Size: 140/70R17 M/C 66H
Overall Height: 46.9 in.|Fuel|Secondary Reduction: Chain Drive|
Seat Height: 35.2 in.|Recommended: Unleaded only|Ratio: 3.231 (42/13)|Tire Pressures
Wheelbase: 56.1 in.|Fuel Tank Capacity: 1.9/2.01 .(CAL/49 state) US Gal.|Transmission type: Constant Mesh 6-speed|Manual Spec
Ground Clearance: 10.2/10.4 in.(CAL/49 state)|Fuel Tank Reserve: 0.55 Gal.||Front Tire Pressure: 29 psi
Minimum Turning Radius: 7.55 ft.| Minimum Turning Radius Observed: NA|Gear Ratios|Rear Tire Pressure: 29 psi
||1st: 2.642|
Weight with oil and fuel|Sequential Fuel Injection|2nd: 1.813|Manual Max Spec (up to 408 pounds max load)
Weight: 302/300 pounds (CAL/49 state)|Manufacturer: Mikuni|3rd: 1.318|Front Tire Pressure: 29 psi
|Type/Size: 38EIS/1 38 mm|4th: 1.040|Rear Tire Pressure: 33 psi
Engine||5th: 0.888|
Type: Liquid cooled single cylinder 4-stroke|Electrical System|6th: 0.786|Max Sidewall
Valvetrain: DOHC|Ignition: Direct Coil Injection||Front Tire Pressure: TBD psi
Displacement: .250L|Charging: AC Magento|Chassis|Rear Tire Pressure: TBD psi
Bore and Stroke: 3.03x2.11 in.||Frame Type: Semi-double cradle|
Compression Ratio: 11.8:1|Battery||Front and Rear Brake
Starter: Electric|Model: SM-14/MITSUBA|Loading|Type: Single Disc F/R 298/230 mm
Lubrication: Wet Sump||Maximum Load: 408 pounds|
|Spark Plug||Front Suspension
Engine Oil|Manufacturer: NGK CR9EK|Front Wheel|Type: Telescopic fork - Wheel Travel: 10.6 in.
10W-30 for 14 – 68 degrees F|Plug Gap: 0.024 - 0.028 in.|Rim Size: 17x3.00 in.|
20W-40 for 50 – 104 degrees F||Tire Size: 110/70R17 M/C 54H|Rear Suspension
Quantity: 1.3L w/out filter replacement|Clutch||Type: Swingarm - Wheel Travel: 10.4 in.
1.4 L w/ filter replacement|Clutch Type: Wet Multiple disc||

http://www.cleanmpg.com/photos/data/523/2010_Yamaha_WR250X_Specs_Middle.jpg

RPM to MPH in 6th Gear

1 Rev of the crank = [(Pi)*(Tire diameter in inches)]/[(Internal gear ratio78/25)*(Transmission sixth gear ratio 22/28)*(Sprocket gear reduction of 42/13)]

1 Rev = [(3.142)*(24.9”)]/[(3.12)*(0.786)*(3.231)] = 9.874 inches. 1,000 RPM = (9,874 inches/min) * (60 min/hr) * (1 foot/12 inches) * (1 mile/5,280 feet) = 9.35 mph

1,000 RPM = 09.35 mph
2,000 RPM = 18.7 mph
3,000 RPM = 28.05 mph
4,000 RPM = 37.4 mph
5,000 RPM = 46.75 mph
6,000 RPM = 56.1 mph
7,000 RPM = 65.45 mph
8,000 RPM = 74.8 mph
9,000 RPM = 84.15 mph
10,000 RPM = 93.5 mph

Engine Break-in specs

For the first 0 to 600 miles -- Avoid prolonged operation above 1/3 throttle. From 600 to 1,000 miles -- Avoid prolonged operation above ½ throttle. After 1,000 miles, you can operate the engine normally.

After 600 miles, perform an initial service including changing the engine oil and oil filter. After 1,000 miles, the bike can be operated normally.

2010 Yamaha WR250X Maintenance, Intervals and Costs

A bike needs more preventative care than a car or truck. In particular, the WR250X’s maintenance schedule asks for an oil change at 600 miles, 4,000 miles and every 3,000 miles afterwards.

The WR250X shines when it comes to valve adjustment inspection at an amazing for a bike, 26,600 miles and again at 26,600 mile intervals thereafter.

Additionally, a host of minor items require checking and adjustment at each and every interval. A $125 charge takes care of the basic items every 3,000 miles at Motorcycle shops in the Chicago suburbs.

You can expect tire replacements to occur at 10,000 mile intervals. Aggressive riding habits will dictate shorter intervals of course.

The O-Ring based chain should be checked for slack every 300 miles and cleaned with Kerosene and sprayed with O-Ring lubricant after washing or riding in the rain.

http://www.cleanmpg.com/photos/data/523/2010_Yamaha_WR250X_Specs_Lower.jpg

http://www.youtube.com/v/WC5wdH14x4Q&hl=en_US&fs=1

With that kind of maintenance costs it would make it very unlikely to be useful as a commuter vehicle. I figured 4 cents per mile to cover the scheduled maintenance not including tires and unexpected costs. It's very nearly a luxury item with this type of upkeep. - Dale

Hi Dale:

The basic maintenance costs includes tightening cables, cleaning and lubing the chain and changing the oil/filter and air filter.... All stuff you would normally do at home. The Valve job on this little beast is a monster of a job but it is the only bike I have seen to date with a 26,000 mile interval.

That said, if you took your car into a dealership at the oil change interval and had them rotate the tires, fill the coolant and wiper fluid, do their basic service, you are looking at over $150.00 as well.

I only included the basic service cost as a benchmark. The 26,000 mile valve job is the WR250X's strength thanks to titanium valves and a car like design approach.

Good Luck

Wayne

Good point. - Dale

No way this is a good commuter, I have seen kids launching it off jumps at the local dirt track. I'm starting to wonder how these kids are going to ride after they are in a wheelchair and need a more accessible vehicle. I wonder if this is something that a vehicle modification could take on, creating a wheelchair or handicapped accessible bike? Have you heard of braun (http://www.braunability.com)?

I'm sorry but this is just ridiculous. These kids launching themselves off jumps at the dirt track are not any more likely to become disabled than those who ski and snowboard at the local mountain or skateboard at the local skatepark. Get some bumps/bruises and maybe break the occasional bone but nothing that most active adolescents don't experience throughout the course of a normal life, people need to live a little. Or maybe you are just being a troll, in which case congratulations, you got me.

As to the WR250X, I have one myself and it's awesome for commuting. The thing is bulletproof, I just hop on and ride and the maintenance at the end of the riding season is incredibly basic (oil, check fluids, chain slackness, etc.), it's a lot cheaper and easier to maintain than my car, that's for sure. It's also fast enough for highway/freeway use unlike scooters (which are also fun for city use) although I wouldn't want to do extended highway trips (1 hr plus) due to the small engine size. With the stock muffler it's also incredibly quiet but the spark arrestor can be removed for a nice throaty growl if you want people to know you're there.

I save about 50% on fuel costs over my 2 door Alero and it's a lot easier to maneuver, find parking, and really cuts down on time spent idling in rush hour since it's so small and easy find escape routes. Plus it actually makes commuting fun, something I didn't fully appreciate until I had to be stuck in my car during the winter months, bored out of my mind. All-in-all I absolutely love my bike in case you can't tell :Banane25: