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| {{DISPLAYTITLE:{{PAGENAME}} Zephyr 550: history, specs, pictures}} | | {{Infobox Motorcycle |
| {{Motorcycle
| | |name = Kawasaki ZR550B |
| |name = Kawasaki ZR550 Zephyr | | |image = |
| |photo = Kawasaki-Zephyr-550.jpg | | |aka = Zepher 550 |
| |aka = Zepher 550, ZR 550 Zephyr | | |manufacturer = [[Kawasaki]] |
| |manufacturer = Kawasaki | | |parent_company = |
| |parent_company = | | |production = 91 |
| |production = 1990 - 1999 | | |model_year = |
| |model_year = | | |predecessor = |
| |predecessor = | | |successor = |
| |successor = | | |class = |
| |class = Road | | |engine = 550cc |
| |engine = 553[[cc]] [[Four-stroke]] [[inline-four]] cylinder. [[DOHC]], oil-cooled, 2 valves per cylinder. | | |bore_stroke = |
| |bore_stroke = 58.0mm x 52.4mm <ref name="owners">{{cite book|title=1990 Kawasaki EL250E owners manual|publisher=Kawasaki}}</ref> | | |compression = |
| |compression = 9.5:1 | | |top_speed = |
| |top_speed = 99 mph (160 km/h) | | |power = |
| |power = 48.95 HP (36.5 KW) @ 10000RPM | | |torque = |
| |torque = 29.5 ft/lbs (40.0 Nm) @ 6000RPM | |
| |fuel_system = 4 30mm Keihin CVK30 carburetors
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| |ignition = | | |ignition = |
| |spark_plug = {{sparkplug|NGK DR9EA}} '91<ref name="owners" /> | | |spark_plug = {{sparkplug|DR9EA}} '91 |
| |battery = {{battery|YUASA YB12A-A}} '91 | | |battery = {{battery|YB12A-A}} '91 |
| |transmission = Gear box: 6-speed <br> | | |transmission = |
| Clutch: wet plate <br>
| | |frame = |
| |final_drive={{chain|520x108}}
| | |suspension = |
| |front_sprocket=16T
| | |brakes = |
| |rear_sprocket=41T
| | |front_tire = {{tire|110/80-17}} '91 |
| |frame = | | |rear_tire = {{tire|140/70-18}} '91 |
| |suspension =Front: 39mm Telescopic forks <br> | | |rake_trail = |
| Rear: Dual Kayaba shocks with preload and rebound adjustments
| | |wheelbase = |
| |brakes =Front: 2x 300mm discs 2 [[piston]] [[calipers]] <br>Rear: Single 245mm disc 1 piston caliper | | |length = |
| |front_tire = {{tire|110/80-17}} | | |width = |
| |rear_tire = {{tire|140/70-18}} | | |height = |
| |rake_trail = | | |seat_height = |
| |wheelbase = 1435 mm (56.5 in) | | |dry_weight = |
| |length = 2080 mm (84.25 in) | | |wet_weight = |
| |width = 755 mm (29.7 in) | | |fuel_capacity = |
| |height = 1095 (43.11 in) | | |oil_capacity = |
| |seat_height = | | |fuel_consumption = |
| |dry_weight = 179 kg / 394.6 lbs | | |turning_radius = |
| |wet_weight = 206.0 kg | | |related = |
| |fuel_capacity = 3.96 Gallon (14.98 Liters) | | |competition = |
| |fuel_consumption = 4.12 liters/100 km (24.3 km/l or 57.09 mpg)
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| |oil_capacity = 3.0 L (3.2 US qt) | |
| |recommended_oil = K-tech SAE 10W-40 | |
| |oil_filter = {{oilfilter|K&N KN-401}}<ref name="kl_2019">{{cite book|title=2019 K&L Supply Co Catalog|publisher=[https://www.klsupply.com/ K&L Supply Co]|date=2019}}</ref>
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| |turning_radius = | |
| |related = [[Kawasaki GT550]] <br />[[Kawasaki ZX550A]] | |
| |competition = | |
| |manuals = [[:File:1990 Kawasaki ZR550-B2 owners.pdf]]
| |
| |air_filter= {{airfilter|K&N KA-0850}} `90-99<ref name="kl_2019">{{cite book|title=2019 K&L Supply Co Catalog|publisher=[https://www.klsupply.com/ K&L Supply Co]|date=2019}}</ref>
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| }} | | }} |
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| The '''[[Kawasaki]] ZR550B Zephyr 550''' was a in-line four, [[four-stroke]] Road [[motorcycle]] produced by [[Kawasaki]] in 1990. It could reach a top speed of 137 mph (220 km/h). Claimed [[horsepower]] was 48.95 HP (36.5 KW) @ 10000 RPM. | | The '''Kawasaki ZR550B''' is a [[motorcycle]] produced by [[Kawasaki]] in 1991. |
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| == Overview ==
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| The Zephyr 550 was the smallest of the Zephyr range, and in some ways ahead of its time. Launched in 1991 as a stylish naked retro roadster, it occupied a niche later made very successful by
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| Suzuki's Bandit. It used the air-cooled engine from the [[Kawasaki ZX550A|GPZ550]], de-tuned for mid-range power, with minor cosmetic changes. The elderly engine was installed in a good-looking rolling chassis. A box-section aluminum twin-shock swingarm used sports-style eccentric chain adjusters, while a
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| classically styled fuel tank and chrome-plated exhaust system rounded off the handsome design. The Zephyr's straight-line performance was disappointing though: the engine that produced 48kW (65bhp) in the GPZ550 was returned to make just 37kW (49bhp).
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| ==Engine==
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| The engine was a oil & [[air cooled]] in-line four, four-stroke. A 58.0mm [[bore]] x 52.4mm [[stroke]] result in a [[displacement]] of just 553.0 cubic centimeters. Fuel was supplied via a double overhead cams/twin [[cam]] (dohc).
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| ==Drive==
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| The bike has a 6-speed transmission. Power was moderated via the wet plate clutch.
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| ==Chassis==
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| It came with a 110/80-17 front [[tire]] and a 140/70-18 rear tire. Stopping was achieved via 2x 300mm discs 2 piston calipers in the front and a Single 245mm disc 1 piston [[caliper]] in the rear. The front suspension was a 39mm Telescopic forks while the rear was equipped with a Dual Kayaba shocks with preload and rebound adjustments. The ZR550 Zephyr was fitted with a 15 Liters / 3.9 US gal fuel tank. The bike weighed just 179 kg / 394.6 lbs.
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| == Photos ==
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| <gallery mode='packed-hover'>
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| File:Kawasaki-Zephyr-550.jpg|600px|Kawasaki ZR550 Zephyr
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| File:Kawasaki-Zephyr-550-1.jpg|600px|Kawasaki ZR550 Zephyr
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| File:kawasaki-zephyr-550-1991-1998-3.jpg|600px|1991 - 1998 Kawasaki Zephyr 550
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| File:kawasaki-zephyr-550-1991-1998-2.jpg|600px|1991 - 1998 Kawasaki Zephyr 550
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| File:kawasaki-zephyr-550-1991-1998-0.jpg|600px|1991 - 1998 Kawasaki Zephyr 550
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| </gallery>
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| ==Specifications==
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| {| class="wikitable"
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| |-
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| !Make Model
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| |Kawasaki 550 Zephyr
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| |-
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| !Year
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| |1991
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| |-
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| !Engine Type
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| |Four stroke Transverse four cylinder. DOHC, 2 valves per cylinder.
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| |-
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| !Displacement
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| |553 cc / 33.7 cu-in
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| |-
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| !Bore X Stroke
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| |58 x 52.4 mm
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| |-
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| !Cooling System
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| |Air cooled
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| |-
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| !Compression
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| |9.5:1
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| |-
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| !Induction
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| |4x 30mm Keihin carburetors
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| |-
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| !Ignition
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| |-
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| !Starting
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| |Electric
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| |-
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| !Max Power
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| |49 hp / 37 kW @ 10000 rpm
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| |-
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| !Max Torque
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| |40 Nm / 29.5 lb-ft @ 6000 rpm
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| |-
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| !Transmission
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| |6 Spee
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| |-
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| !Final Drive
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| |Chain
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| |-
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| !Front Suspension
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| |39mm Telescopic forks
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| |-
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| !Rear Suspension
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| |Dual Kayaba shocks with preload and rebound adjustments
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| |-
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| !Front Brakes
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| |2x 300mm discs 2 piston calipers
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| |-
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| !Rear Brakes
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| |Single 245mm disc 1 piston caliper
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| |-
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| !Front Tire
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| |110/80-17
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| |-
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| !Rear Tire
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| |140/70-18
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| |-
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| !Dry Weight
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| |179 kg / 394.6 lbs
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| |-
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| !We -weight
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| |206 kg / 454 lbs
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| |-
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| !Fuel Capacity
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| |15 Liters / 3.9 US gal
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| |}
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| ==1990== | | ==1990== |
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| *Owner's Manual No. - 99922-1898-01, (DE) 99923-1482-01 | | *Owner's Manual No. - 99922-1898-01, (DE) 99923-1482-01 |
| *Service Manual No. - 99924-1136-02 | | *Service Manual No. - 99924-1136-02 |
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| ==In Movies==
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| * [https://motopixel.org/pixel/blue-bloods#kawasaki-zr550b-zephyr Blue Bloods]
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| * [https://motopixel.org/pixel/khamsa#kawasaki-zr550b-zephyr Khamsa]
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| * [https://motopixel.org/pixel/stingers#kawasaki-zr550b-zephyr Stingers]
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| == References ==
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| {{reflist}}
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| {{motorcycle-stub}} | | {{motorcycle-stub}} |
| {{Kawasaki}}
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| [[Category:Kawasaki motorcycles|ZR550B]] | | [[Category:Kawasaki motorcycles|ZR550B]] |
| [[Category:Kawasaki ZR series]] | | [[Category:Kawasaki ZR series]] |
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| [[Category:1990s motorcycles]]
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