Established in 1996, China Jiansu Vehicle Co., Ltd is one of the earliest China yamaha dirt bike manufacturer and wholesaler that have successfully developed more type vehicles. Adopting pipe-lining, our company has three motorcycle assembly pipe-lining, two engine assembly pipe-lining, two whole vehicle testing lines and various advanced and complete production and testing equipment, which provides reliable safeguard for the customized yamaha dirtbike production. We have been awarded "ISO9001" and China Compressive Product Authentication ("CCC" certificates). In 2003, we successfully passed the examination of National Motorcycle Production Admittance Scene.

Updates for the '07 YZ450F include new forged upper triple clamps as well as lighter rims and wave type brake rotors. There's also revisions to the clutch and an updated exhaust system. Factory equipment on the bike this year includes aluminium Pro Taper handlebars and a gripper style seat. There's also titanium footpegs as standard. The YZ250F has altered carburetion and ignition specs aimed at increasing bottom end and mid range power. The steering head geometry has been changed on the four stroke 250, it's been moved back by 3mm to help the bike turn quicker. The front brake caliper and master cylinder have also been updated this year to save weight. Both the 250 and 450 have a new oversized barrel clutch adjuster to make it easier to make adjustments on the fly. Again the 250F also gets the Pro Taper bars, gripper style seat and the titanium footpegs.

Front and Rear Disc Brakes, Large Foot Pegs, Quality Frame, Front Dul Spring Shocks and Rear Mono Shock, Quality Kick Stand. After Market Exhaust and Air Filter pre-installed Quality Off-road Tires Heavy Duty Chain Drive. Comfortable Seat Quality Plastic Large Front Mud Guard Applied Decals. EPA Approved Free Tech Support Free Toolkit Free Manual Available in Pink, Blue, Red, and Black. Specifications Maximum Speed 35 mph Range 25 Frame High Tensile Steel Drive System Chain Tires Tires (Front and Rear): 12 X 2.75 4-Inch Wheels Suspensions Front Suspension: Dual Oil Shocks Rear Suspension: Mono Shock Brakes Front and Rear Disc Brakes Engine Power 49 cc Dimensions Length: 39 Inches Width: 23 Inches Height: 28 Inches Seat Height: 21" Carrying Capacity 185 lbs Engine 49cc Single Cylinder, Air-Cooled, 2 Stroke, EPA Certified Gas Tank 1 L Starter Electric Warranty One-month Limited Manufacturer Warranty.

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