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2007 Yamaha YZ450F from Xtreme Powersports
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· Specifications ·
Engine
  
Type 449cc, liquid-cooled, 4-stroke, DOHC, 5-valve
Bore x Stroke 95 x 63.4mm
Compression Ratio 12.3:1
Carburetion FCR-MX39 x 1
Ignition Digital CDI
Transmission Constant mesh 5-speed/wet, multiple-disc
Final Drive Chain Drive
Chassis
  
Suspension/Front Telescopic Fork, coil spring/oil damper, 11.8" travel
Suspension/Rear Swingarm (link, suspension), coil spring/gas-oil damper, 12.4" travel
Brakes/Front Hydraulic single disc brake, 250mm
Brakes/Rear Hydraulic single disc brake, 245mm
Tires/Front 80/100-21-51M
Tires/Rear 110/90-19-62M
Dimensions
  
Length 86.3"
Width 32.5"
Height 51.4"
Seat Height 38.9"
Wheelbase 58.8"
Ground Clearance 14.7"
Dry Weight 220 lb.
Fuel Capacity 1.8 gal.
Other
  
Main Jet #160
Main Air Jet #200
Jet Needle NFLR-4
Needle Jet NA
Pilot Air Jet 1 #100
Pilot Outlet 0.9
Pilot Jet #45
Primary Reduction Ratio 61/23 (2.652)
Secondary Reduction Ratio 49/13 (3.769)
Gear Ratio - 1st Gear 27/14 (1.929)
Gear Ratio - 2nd Gear 23/15 (1.533)
Gear Ratio - 3rd Gear 23/18 (1.278)
Gear Ratio - 4th Gear 24/22 (1.091)
Gear Ratio - 5th Gear 20/21 (0.952)
Warranty 30 Day (Limited Factory Warranty)

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