Yamaha YZ125 Specifications

• Yamaha YZ125 MSRP: $5,499
• Yamaha YZ125 Engine:
• Type: 124cc, liquid-cooled, reed valve-inducted, 2-stroke
• Bore x Stroke: 54 x 54.5mm
• Compression Ratio: 8.6:1 — 10.7:1
• Carburetion: 38mm Mikuni TMX
• Ignition: Digital CDI
• Transmission: 6-speed w/multi-plate wet clutch
• Final Drive: #520 Chain

• Yamaha YZ125 Chassis:
• Suspension/Front: 48mm Kayaba inverted telescopic fork w/adjustable compression and rebound damping; 11.8″ travel
• Suspension/Rear: Kayaba single shock w/adjustable preload, compression and rebound damping & separate hi/lo-speed compression adjusters; 12.4″ travel
• Brakes/Front: 250mm Floating Disc
• Brakes/Rear: 245mm Disc
• Tires/Front: 80/100-21-51M Dunlop
• Tires/Rear: 100/90-19-57M Dunlop
• Yamaha YZ125 Dimensions:
• Length: 84.1″
• Width: 32.6″
• Height: 51.8″
• Seat Height: 39.25″
• Wheelbase:: 56.8″
• Ground Clearance: 15.2″
• Rake (Caster Angle): 25.5º
• Trail: 4.13″
• Dry Weight: 189 lbs.
• Fuel Capacity: 2.1 gallons
• Yamaha YZ125 Other:
• Main Jet: 410
• Main Air Jet: 2.5
• Jet Needle: 6BFY43-74
• Needle Jet: S-1
• Pilot Air Jet 1: #40
• Pilot Outlet: 0.7
• Pilot Jet: 40
• Primary Reduction Ratio: 64/19 (3.368)
• Secondary Reduction Ratio: 48/13 (3.692)
• Gear Ratio – 1st Gear: 31/13 (2.385)
• Gear Ratio – 2nd Gear: 29/15 (1.933)
• Gear Ratio – 3rd Gear: 27/17 (1.588)
• Gear Ratio – 4th Gear: 23/17 (1.353)
• Gear Ratio – 5th Gear: 24/20 (1.200)
• Gear Ratio – 6th Gear: 23/21 (1.095)
• Warranty: 30 Day (Limited Factory Warranty)