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2025 Yamaha YZ65

  • 2025 Yamaha YZ65
  • 2025 Yamaha YZ65
  • 2025 Yamaha YZ65
  • 2025 Yamaha YZ65
  • 2025 Yamaha YZ65
  • 2025 Yamaha YZ65
  • 2025 Yamaha YZ65
  • 2025 Yamaha YZ65
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Overview

Designed for every mini-moto racer with dreams of winning. The Yamaha YZ65 is the perfect first step into the victory zone that offers youth riders with the same top-notch performance and reliability of bigger YZ models.

Specifications
Model
YZ65
Category Name
Motorcycles
Year
2025
Manufacturer
Yamaha
Color
Team Yamaha Blue
highlights

2025 Yamaha YZ65POTENT 65CC MOTOCROSSER

Built to win—just like its bigger YZ siblings—the compact YZ65 is ready to tackle the track right out of the gate featuring Yamaha's world-renowned off-road performance, quality and durability.

2025 Yamaha YZ65HIGH PERFORMANCE ENGINE 

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.

2025 Yamaha YZ65YZ LINEAGE & STYLING 

The YZ65 draws upon Yamaha's decades of leading track performance and proven durability. The YZ65 may be the smallest member of the family, but it packs in the same aggressive styling as the larger YZ and YZ-F stylings. Even down to the slick blue Excel® wheels. 

 

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

 

features & benefits

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
  • Aluminum swingarm
  • Aluminum tapered handlebar with four positions of adjustability
  • 14-inch front and 12-inch rear wheel
  • Styling based on high-end YZ models

ENGINE

  • Powerful-feeling 65 cc single-cylinder, liquid-cooled, 2-stroke engine with crankcase reed valve.
    • Overall design creates excellent ride character and performance
  • 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
  • 2-petal reed valve.
  • 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
  • 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
  • Model-specific CDI unit.
    • Digital CDI system delivers precise spark and monitors engine speed to ensure optimal timing for excellent response
  • Short-type spark plug.
    • Short design offers better service ability and performance
  • 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
  • Fine-tuned air cleaner box.
  • Keihin PWK28 carburetor with revised settings (compared to YZ85).
  • Downsized radiator (compared to YZ85). * Drive chain with new dimensions (compared to YZ85).
    • Gold colour contributes to bike's serious racing aesthetic

CHASSIS/SUSPENSION

  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • Wave-style disc brakes.
    • Sporty wave-style rotors are lighter than conventional rotors and offer improved self-cleaning action in dirty conditions
  • 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

DETAILS

  • Adjustable clutch and front brake levers
  • Grippy footpegs
  • Fuel capacity is 3.5 litres
  • Bead lock on rear wheel
  • Folding shift lever tip helps prevent damage

 

engine
ENGINE
2-stroke, liquid-cooled, crankcase-reed-valve single
FINAL DRIVE
Chain
DISPLACEMENT
65 cc
TRANSMISSION
Constant mesh, 6-speed
FUEL DELIVERY
Keihin PWK28
BORE AND STROKE
43.5 x 43.6 mm
COMPRESSION RATIO
8.1-9.6:1
IGNITION / STARTING
CDI / Kick
chassis
TIRES (REAR)
80/100-12
BRAKES (REAR)
190 mm wave disc / single-piston caliper
TIRES (FRONT)
60/100-14
BRAKES (FRONT)
198 mm wave disc / twin-piston caliper
SUSPENSION (REAR)
Fully adjustable Monocross / 270 mm (10.6") wheel travel
SUSPENSION (FRONT)
Fully adjustable 36 mm inverted fork / 215 mm (8.5") wheel travel
critical data
WIDTH
760 mm (29.9")
HEIGHT
1,000 mm (39.4")
LENGTH
1,615 mm (63.6")
COLOUR(S)
Yamaha Racing Blue
WHEELBASE
1,140 mm (44.9")
WET WEIGHT
61 kg (134.5lb)
SEAT HEIGHT
755 mm (29.7")
FUEL CAPACITY
3.5 litres (0.8 imp. gal.)
GROUND CLEARANCE
265 mm (10.4")
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