Information 1998.05.20 - First Model Release It's 2nd Generation in YAMAHA BWS family, "BWS" means "Big Wheel's", also the first scooter complete finished by YMRT (YAMAHA Motor R&D Taiwan) in 1997. YAMAHA Japan started relocation the R&D center and scooter production-lines to Taiwan in 1996, currently all of new YAMAHA scooters are exported from Taiwan. It's a really peppy model with 2-Stroke engine, Reed-Valves device let you off the line faster, Air-Cooled system is easy on maintenance and lower cost on parts, wide aggressive tires help you a lot on rough road surface, front disc brake let you zigzag in the city without worries, there is plenty of room for two on the comfortable seat & a large lock-in storage compartment under the seat. Wayne's Opinion 2005.01.31 - Vancouver, CANADA The North America version combined some parts originally install on BWS 100: Front Forks, and Aluminum Wheels, also changed head-lights to brighter H4 12V35/35W bulbs by DOT requirements, we don't recommend people change wires to make 2 bulbs light up at the same time, it will swallow a lot of electricity from alternator. The 50cc engine is slightly demanding because the frame and body were originally designed for BWS 100, stock speed is *65km/hr maximum (2005 model) on flat ground. The barycenter is higher than other scooters because the frame design and wide aggressive tires, so you will feel rough when leaning in the curves. There are tons of aftermarket parts let you play with YAMAHA BWS. Basic upgrades such as cylinder, transmission, exhaust, carburetor, tire, plug, shock, light, and handle Bar; Also Liquid-Cooled 70cc Cylinder Kit, High RPM / Light Weight Alternator, KEIHIN PWK 28mm Carb + Manifold Kit, 12" Wheels + Low Profile Racing Tires are all available; You can even swap the whole engine to BWS 100cc and maximize it to 150cc with professional processing, we mean it! BWS is the scooter with unlimited upgrade ability! The average Retail Price for this scooter in North America should be around USD $1,800 ~ $1,950 plus applicable taxes only. See FAQ section for more info about this model. * The result is based on our demo model, depending on scooter, rider and road's conditions, result may very.   Name: YAMAHA BWS YAMAHA ZUMA YAMAHA BWS Model ID: 5DA YW50 YW50 Engine: 4WX 49cc 2-Stroke 49cc 2-Stroke 49cc 2-Stroke Cooling System: Air-Cooled Air-Cooled Air-Cooled Bore & Stroke: 40.0 mm x 39.2 mm 40.0 mm x 39.2 mm 40.0 mm x 39.2 mm Compression Ratio: 7.0 : 1 7.2 : 1 7.2 : 1 Horsepower: 5.5 ps @ 7,000 rpm     Torque: 0.57 kg·m @ 6,500 rpm   0.7 kg·m @ 6,000 rpm Valve Train: Reed Valve Reed Valve-Inducted Reed Valve Carburetion: Teikei Y14P, Auto Choke 14mm Teikei, Auto Choke Teikei Y14P, Auto Choke Transmission: Automatic V-Matic Belt Automatic V-Matic Belt Drive Automatic V-Matic Belt Drive Front Suspension: Telescopic Fork Telescopic Fork, 2.6 inch Travel Telescopic Fork Rear Suspension: Single-Shock Single-Shock, 2.4 inch Travel Single-Shock Front Brakes: Disc Brake Disc Brake 155 mm Disc Brake 180 mm Rear Brake: Drum Drum Drum Front Tire: 120/90-10 56J 120/90-10 120/90-10 Cheng-Shin Rear Tire: 130/90-10 59J 130/90-10 130/90-10 Cheng-Shin Wheelbase: 1.275 m 50.2 inches 1,275 mm Seat Height: 0.765 m 30.1 inches 765 mm Dry Weight: 88 kg 185 pounds 91 kg Fuel Capacity: 5.7 L 1.5 gallons 5.7 liters         Price: JPY 199,000 (1998) USD $1,849 (2004) CAD $2,749 (2004)

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