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 Designed for the discriminating mini moto racer that wants to win and propel themselves into the victory zone, the Yamaha YZ65 offers youth riders with the same top-notch pe
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Confidence
 Engineers designed the YZ65 for kids stepping between 50 and 85 cc dirt bikes. Manageable power from the 65 cc two-stroke engine, a miniaturized frame, smaller wheels (compared to the YZ85) and light overall weight are all features designed to allow youth riders to ride faster with confidence. |
Engine Performance
The YZ65's liquid-cooled, two-stroke, single-cylinder engine features the Yamaha Power Valve System (YPVS), providing excellent power and torque characteristics. The same advanced technologies found in Yamaha's race-winning YZ125 and YZ250 motocrossers can also be found in the YZ65.
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YZ Heritage
The YZ65 draws upon Yamaha's decades of leading track performance and proven durability. Adjustable front and rear suspension, a tapered handlebar and YZ450F-inspired bodywork are just a few of the trickle-down highlights of the smallest YZ model.
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Features & Benefits
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Key Features |
- Powerful-feeling 65 cc liquid cooled, single-cylinder 2-stroke engine with Yamaha Power Valve System (YPVS)
- Crankcase reed valve
- 6-speed transmission with optimized gear ratios
- Semi-double-cradle steel frame, aluminum subframe
- 36 mm inverted fork with 12 levels of compression and 10 levels of rebound damping for solid front-end feedback
- Monocross rear suspension with 10 levels of adjustment for both rebound and compression damping
- Newly designed aluminum swingarm
- Aluminum tapered handlebar with four positions of adjustability
- New seat for improved comfort, body weight transfer and easy maintenance
- 14-inch front and 12-inch rear wheel
- Styling based on high-end YZ models
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Engine |
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Powerful-feeling 65 cc single-cylinder, liquid-cooled, 2-stroke engine with crankcase reed valve.
- Overall design creates excellent ride character and performance
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Yamaha Power Valve System (YPVS).
- Mechanical power valve system delivers effective exhaust timing throughout the entire rev range
- Provides excellent power and torque characteristics
- Delivers responsive acceleration just as the rider intends
- Slit-shaped valve on the side of the exhaust port operates in response to engine rpm
- In low-to-mid-rpm range when exhaust timing is slower, valve moves to cover the top part of the exhaust port
- In high rpm range when quick exhaust timing is needed, valve recedes and exhaust port is fully uncovered
- Valve control governor from YZ125 and YZ250 employed
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2-petal reed valve.
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Optimized crankshaft balance and lightweight connecting rod.
- Resin weight in crank web creates high primary compression ratio and optimal inertial mass
- Delivers instant power delivery and reduced vibration
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Specialized intake manifold and exhaust pipe.
- Optimal intake and exhaust layout complies with racing regulations
- Short exhaust produces rippling sound unique to a 2-stroke
- Expansion chamber designed for plenty of volume
- Design pays special attention to pulses that occur during combustion flow to contribute to explosive but easy-to-use power
- Exhaust complies with FIM/AMA regulations
- Optimized ignition output produces a stronger, more consistent spark throughout the entire rpm range
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Model-specific CDI unit.
- Digital CDI system delivers precise spark and monitors engine speed to ensure optimal timing for excellent response
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Short-type spark plug.
- Short design offers better service ability and performance
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6-speed transmission with optimized gear ratios.
- Ideal number of clutch plates and spring load gives clutch lever a light pull
- Gear ratios fine-tuned for performance
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Fine-tuned air cleaner box.
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Keihin PWK28 carburetor with revised settings (compared to YZ85).
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Downsized radiator (compared to YZ85). * Drive chain with new dimensions (compared to YZ85).
- Gold colour contributes to bike's serious racing aesthetic
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Chassis/Suspension |
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Semi-double-cradle steel frame and aluminum subframe.
- Dimensions, rigidity balance and synergy with suspension equals handling that feels light and stable, and willing to lean over in turns
- Lightweight, bolt-on aluminum subframe contributes to mass-centralization
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Inverted 36 mm KYB front fork with 215 mm (8.5 in) of wheel travel.
- Design combines handling with a light, stable feel and a solid connection to the ground
- 36 mm inner tubes ensure planted feeling when entering corners and excellent shock absorption when going over bumps
- Outer tubes made of aluminum alloy for excellent rigidity and front-end feel
- Adjustable compression (12 levels) and rebound (10 levels) damping to fine-tune handling and performance on the track
- Aluminum steering stem developed for rigidity balance
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KYB link-less Monocross rear suspension with 270 mm (10.6 in) of wheel travel.
- Design provides smooth damping feel and doesn't bottom out when absorbing shocks
- Shock absorber has 10 levels of adjustment for both rebound and compression damping to fine-tune handling and performance
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Aluminum swingarm.
- Rigidity balance is tuned for YZ65's frame, delivering light handling feel and easy lean-in characteristics
- Swingarm end designed with ease of maintenance in mind
- Resin chain guard designed not to get caught up in ruts that the small wheel will travel through
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Tapered aluminum handlebar with 4-position adjustability.
- Handlebar adjusts 27 mm to match a child's growth
- Handlebar crown made of cast aluminum for light weight and strength
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Seat designed for comfort and easy maintenance.
- Seat design facilitates body weight transfer for enhanced on-track performance and rider confidence
- Single bolt under the seat cushioning makes seat removal easier
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Bodywork based on high-end YZ models.
- Body panels have a soft, gentle look
- Styling follows the YZ design language of horizontal lines
- Colours and graphics similar to the flagship YZ450F
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Wave-style disc brakes.
- Sporty wave-style rotors are lighter than conventional rotors and offer improved self-cleaning action in dirty conditions
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14-inch (front) and 12-inch (rear) blue Excel rims with Maxxis SI tires.
- Maxxis SI tires offer good grip across a variety of track conditions
- Blue Excel rims offer high quality and race-minded looks
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