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2018 Yamaha YW50FJR


Stock Image: Metallic Red

Stock Image: Metallic Red

In Stock
Courtenay Motorsports
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Big on fun and easy on the wallet, the gas sipping 4-stroke BW's 50 is your ticket to an independent city lifestyle. It's designed to take the urban mobility concept to an exciting new level. Love the ride, enjoy the freedom and fun.

Engine: 49cc, liquid-cooled, SOHC, 3-valve, fuel injected, 4-stroke engine produces peppy, easy to use power with incredible fuel economy. The concept of this environmentally friendly engine is solid performance with low emissions and excellent fuel economy.

Storage: Spacious 23 litre, lockable under seat storage can hold selected full-face helmets or other items like a backpack, lap top computer, rain suit etc.

Fuel Economy: Fuel consumption of approximately 55 kilometres per litre or 158 miles per gallon (imp.). Your actual consumption may vary.

Engine Features
  • 49cc, liquid-cooled, SOHC, 3-valve, fuel injected, 4-stroke engine produces peppy, easy to use power with incredible fuel economy.
  • Fuel consumption rating of approximately 55 kilometers per litre or 158 miles per gallon (imp.). Your actual consumption may vary.
  • Fast, dependable electric starting.
  • Maintenance-free transistor controlled ignition (TCI): produces a strong spark for fast starts; provides precise ignition timing / mapping for optimum engine performance at all rpms
  • Fan-assisted, liquid-cooling: maintains consistent engine temperatures even in stop & go traffic; liquid-cooling allows for a higher state of tune / performance; reduces mechanical engine noise
  • 3- valve cylinder head: utilizes two intake valves & one exhaust valve; excellent breathing efficiency & excellent fuel economy
  • Roller rocker arm valve actuation: specially designed roller rocker arms reduce friction for increased power; reduce mechanical engine noise for a quiet, enjoyable ride
  • Intake & exhaust valves feature a special "carbon cutter" valve stem design: automatically removes carbon build up from the valve stems; maintains maximum engine efficiency & power, even during extended slow speed use; (carbon build up on valve stems can lead to sticky valves & poor performance)
  • Lightweight, aluminum cylinder features ceramic composite plating on the cylinder bore: insures uniform heat dissipation; reduces internal friction & weight
  • Lightweight crankshaft with carburized connecting rod & lightweight forged aluminum piston: optimizes engine performance & provides fast throttle response; excellent durability (carburization is a heat treating process that increases the strength of steel); reduces mechanical vibration
  • 19 mm, "closed loop" throttle body fuel injection system: excellent fuel economy & good throttle response; "closed loop system" uses an oxygen sensor to "sniff" spent exhaust & automatically adjust the fuel / air ratio for reduced emissions; fuel injection benefits include choke-free starting, steady idling during warm up, excellent fuel economy & reduced emissions
  • BWs 50 uses regular 87 octane gasoline.
  • Easy access, paper-type air filter is used. Air box design reduces intake noise.
  • Centrifugal oil filtering system: automatically removes any particles found in the oil; never requires cleaning or maintenance
  • Fully automatic CVT transmission (CVT = constantly variable transmission): "twist-the-throttle-and-go" operation; no clutch lever or gear shifting involved - the transmission is fully automatic.
  • Environmentally responsible exhaust system produces a very quiet exhaust note: muffler contains dual honeycomb-style catalytic converters to reduce emissions
  • Air induction System (AIS) further reduces harmful exhaust emissions: AIS system injects fresh air into the exhaust to ensure complete fuel combustion; also helps to maximize the function of the catalytic converters
Chassis/Suspension Features
  • Rugged "underbone-style" steel frame: makes getting on & off the BW's easy
  • Wheelbase, centre of gravity, weight distribution & tire design, have all been engineered to provide light, agile handling & great manoeuvrability.
  • 26 mm hydraulic front fork: 58mm (2.3") of wheel travel; rubber fork gaiters / boots extend service life of fork seals & protect inner tubes from chips
  • Single shock unit swingarm rear suspension: 56mm (2.2") of wheel travel; good ride quality
  • Lightweight, rugged 5-spoke aluminum "mag" wheels with wide, tubeless tires: wide, aggressive, tubeless 120/90-10 tires front & rear; tires well suited for rough, "pot holed" urban roadways; tires provide lots of grip & help create BW's unmistakably fun look.
  • 180 mm front disc brake with single piston caliper: "wave style" rotor adds style; excellent stopping power
  • Rear drum brake: good stopping power; fast & easy wear compensating adjustments via wing nut adjuster
  • Both front & rear brakes are hand-operated like on a bicycle... making riding simple and fun.
  • Instrumentation includes: speedometer, odometer & fuel gauge: also warning lights for coolant temperature, high beam, turn signals & engine warning light
  • Spacious, 23 litre, lockable under seat storage: can hold selected full-face helmets; or everyday commuter items like rain suit, laptop, briefcase, etc.
  • Plush seat provides excellent comfort & plenty of room.
  • 4.5 litre fuel tank with locking gas cap and in tank electric fuel pump: accessed via a panel on the "foot tunnel"; filling location keeps the centre of gravity low for easy handling; location minimizes mess if some fuel gets accidentally spilled; excellent fuel economy means an extended riding range & fewer fill ups
  • Multifunction, 3 in 1 main key switch operates ignition, fork lock & under seat storage lock: special anti-theft "shutter" blocks key hole access to prevent tampering
  • Dual 35 watt halogen headlights: excellent illumination & rider visibility; design enhances BW's tough yet sporty rally styling
  • Handy front mounted storage pocket for small items like cell phone or wallet.
  • Rugged rear cargo rack. Rack can be used as mount for accessory top box
  • Front mounted folding hook for additional carrying convenience, perfect for bags & handbags
  • Stylish clear turn signal lenses
  • Rear fender extension reduces road splash
  • Easy-to-use centre stand
  • Easy access oil level dip stick
  • Side reflectors enhance visibility
  • Low maintenance, sealed battery (battery should be charged during winter storage)
  • Engine: 4-stroke, liquid-cooled, SOHC, 3-valve, single
  • Displacement: 49cc
  • Bore and Stroke: 38 x 43.6 mm
  • Compression Ratio: 12.0:1
  • Maximum Torque: 0.4 kg-m (3 ft-lbs.) @ 6,500 rpm
  • Fuel Delivery: Mikuni 19mm throttle body F.I.
  • Estimated Fuel Consumption┬▒: 55 kpl / 155 mpg (imp.)
  • Lubrication: Wet sump
  • Ignition / Starting: TCI / Electric
  • Transmission: Fully automatic CVT
  • Final Drive: Enclosed V-belt / Spur gear
  • Suspension (Front): 26mm fork / 58mm (2.3 in.) wheel travel
  • Suspension (Rear): Single shock unit swingarm / 56mm (2.2 in.) wheel travel
  • Brakes (Front): 180mm disc / single piston caliper
  • Brakes (Rear): Drum
  • Tires (Front): 120/90-10
  • Tires (Rear): 120/90-10
Critical Data
  • Length: 1,855mm (73 in.)
  • Width: 730mm (28.7 in.)
  • Height: 1,095mm (43.1 in.)
  • Wheelbase: 1,280mm (50.2 in.)
  • Ground Clearance: 115mm (4.5 in.)
  • Seat Height: 770mm (30.3 in.)
  • Fuel Capacity: 4.5 L (1.0 Imp. gal.)
  • Wet Weight: 93kg (205 lb.)
  • Maximum Load: 85kg (187 lb.)
  • Colour(s): Midnight Silver, Metallic Red
Unit may not be as shown. Every attempt has been made to showcase Canadian versions of our products, but all images, information and specifications may not be exact and are subject to change without notice. Some models may be shown with optional accessories. Fuel economy estimates are based on US EPA exhaust emission certification data obtained by Yamaha and converted into Canadian measurements. Your actual mileage will vary depending on road condition, how you ride, maintain your vehicle, accessories, cargo and operator/passenger weight.



Engine Type
4-stroke, SOHC, 3-valve, single
Bore and Stroke
38 x 43.6 mm
Compression Ratio
Fuel System
Mikuni 19mm throttle body F.I.


Fully automatic CVT
Drive System
Enclosed V-belt / Spur gear


Front Suspension
26mm fork / 58mm (2.3 in.) wheel travel
Front Brakes
180mm disc / single piston caliper
Front Tire
Rear Suspension
Single shock unit swingarm / 56mm (2.2 in.) wheel travel
Rear Brakes
Rear Tire
23L under seat


Curb Weight
93kg (205 lb.)
Seat Height
770mm (30.3 in.)
1,280mm (50.2 in.)
Fuel Capacity
4.5 L (1.0 Imp. gal.)


Midnight Silver, Metallic Red


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