Yamaha YFZ450 , Engine: 439cc, 4-Stroke Single, Liquid Cooled w/ Fan, Titanium 5-Valve DOHC, GYTR Exhaust, K&N Air Filter w/Outerwear pre-filter, Bore x Stroke: 95mm x 62mm, Compression Ratio: 11.9:1, Carburetion: Keihin 39mm FCR w/ Throttle Position Sensor, Ignition: DC – CDI, Starting System: Electric, Transmission: 5-Speed Manual Clutch, Drive Train: 2WD; Sealed O-Ring Chain, Yamaha YFZ450 Chassis:, Suspension/Front: Independent Double Wishbone, 9.1 w/ Rebound, Compression and Threaded Preload Adjustment, Suspension/Rear: Cast Aluminum Swing Arm, 10.1 w/ Rebound, Compression and Threaded Preload Adjustment, Brakes/Front: Dual Hydraulic Disc, Twin Piston, Brakes/Rear: Hydraulic Disc, Twin Piston, Tires/Front: AT21 x 7-10 Radial, Tires/Rear: AT20 x 10-9 Radial, Yamaha YFZ450 Dimensions:, L x W x H: 72.4 x 46.1 x 42.9, Seat Height: 31.5, Wheelbase: 50.4, Ground Clearance: 4.4, Fuel Capacity: 2.6 Gallons, Dry Weight: 350 Lbs., Yamaha YFZ450 Other:, Lighting: Dual 30W Krypton Multi-reflector Headlights & 21/5W Brake light