A Little bit of EX500 history:

The Kawasaki EX500 lineage began with the 454LTD cruiser. Apparently the 454's engine was very well liked, and it was decided to make it bigger and faster for a sport bike. There seems to be another source that says the EX500 engine is derivative of the ZX1000 - Hmmmm....... Kawasaki needed to fill a gap in their line-up as the Ninja 250 and 600 already existed. The EX debuted in Europe in 1986 as the GPz500. It was an instant hit! Later it made it to the US as the EX500 and had remained virtually unchanged until 1994 when it underwent some slight cosmetic surgery, received larger wheels with disc rear brakes, larger diameter forks, slightly redesigned transmission and a few other minor things. The EX500 was also officially added to the Ninja line in 94 and has once again remained unchanged to the present. The EX was designed to be an econo-sportbike, but ultimately the finished product worked out to be greater than the sum of its parts.

What's so good about the EX?

  • It's light - And very maneuverable - trounces bigger bikes in the turns - esses are the besst!.
  • It's fast - Especially for a 500cc engine.
  • It's inexpensive - Used examples run from as low as $600 to $2400, and brand new is around $5000.
  • Lower insurance rates - My insurance company considers the EX500 a standard and not a sportbike, and the rate is priced accordingly. Some insurers might raise the rate if your bike is "officially" called a Ninja (94 and up).
  • Its reliable - So "bullet-proof" that Kawasaki has been producing it for over a decade!

    What's wrong with the EX?
    Well, not much really........Because it is a twin it can get buzzy at higher revs. The wheels (both 16 and 17") are sized so that the choices for premium/modern tires are severely limited. Models before 1994 might pop out of 2nd gear during hard acceleration/deceleration, engine braking while going downhill and sometimes downhill and to the right. Undercut or new transmission gears will solve this problem.

    Tricks you can do with your EX:
    Really want maximum performance? Take an MSF (Motorcycle Safety Foundation) Rider Safety Course! You will get much more from your bike when you learn to ride safely and understand your limits. This does not necessarily turn you into the resident safety monitor geek, but it will allow you to grow as a motorcyclist and enable you to judge when and where the right times/places might be to cut loose and RIDE! NJ has an Intermediate Rider Course where you can take the course on your own bike, and I'm sure other states have this as well.

    If you have an EX you might be eligible to try the "Mirror Trick" (I believe Jim Twyford invented this trick, and deserves due credit) for improved rear visibility. First you need two stock EX mirrors and a pre-94 EX as this will not work on other models. Simply rotate the mirror stalks 180 degrees so that they are now backwards - Do not switch sides. Then rotate the mirrors so that they are facing forward again.

    Install Late model Suzuki Katana parts, Kawasaki ZX6 parts and a Honda F2 front end if you like to tinker. Install a Muzzy exhaust and a jet kit, try different body work, or none at all. Put a hood ornament on the front or a spoiler on the rear. Paint it PURPLE! Don't let the Harley owners have all the fun, customize your EX and make it a unique and personal thing.


    Pre-94 Specifications


    Chassis
    Double-downtube, full-cradle perimeter frame: box section steel swing arm
    Wheelbase 56.6 in.
    Rake/trail 27.5°/3.5 in. (89mm)
    Seat height 30.3 in (770mm)
    Ground clearance 4.9 in (124mm)
    Fuel capacity (main/reserve) 4.2 (0.6)gals. (15.9/2.2l)
    Curb weight (full tank) 408.5 lbs (185kg)

    Brakes
    Front - hydraulic, single-disc with dual-piston caliper
    Rear - rod-actuated, single-leading shoe drum

    Wheels
    Front - cast, 2.15 x 16 - tire 100/90-16
    Rear - cast, 2.5 x 16 - tire 120/90-16

    Suspension
    Front - center-axle fork with 36mm tubes and 5.5 in. (140mm) of travel
    Rear (1) shock absorber, adjustable for spring preload, with 3.9 in. (100mm) of rear-wheel travel.

    Performance
    Standing start 1/4 mile 12.73 sec. @ 102.21 mph
    Acceleration, 0-60 mph 3.76 sec.
    Maximum speed in gears @ engine redline (1) 44 (2) 63 (3) 82 (4) 101 (5) 118 (6) 133
    Braking, 60-0 mph 115 ft.
    Average fuel consumption rate 48 mpg (20.4 km/l)
    Cruising range (main/reserve) 202/29 mi (237/46 km)

    Speedometer error
    30mph indicated, actual 29.50
    60 mph indicated, actual 57.53

    Engine
    Four-stroke, parallel twin; liquid-cooled with two chain- driven overhead camshafts; four valves per cylinder
    Displacement 498cc (19.6 cu. in.)
    Bore and stroke 74.0 x 58.0mm (2.91 x 2.28 in.)
    Compression ratio 10.8:1
    51.72bhp @ 9500rpm
    30.86ft-lbs @ 8000rpm
    Carbuation (2) 34mm Keihin constant-vacuum
    Exhaust system two-into-two
    Ignition - battery-powered, inductive magnetically triggered
    Oil capacity 3.6 qts. (3.4l) including oil filter capacity

    Transmission
    Six-speed, constant mesh, wet-clutch
    Primary drive straight cut gear: 23/61, 2.662
    Final drive #520 chain; 42/16 sprockets, 2.625
    Gear ratios (transmission) (1) 36/14, 2.571 (2) 32/18, 1.78 (3) 29/21, 1.38 (4) 27/24, 1.12 (5) 25/26, 0.96 (6) 23/27, 0.85
    Gear ratios (overall) (1) 17.87 (2) 12.37 (3) 9.60 (4) 7.83 (5) 6.88 (6) 5.92

    Electrical
    AC Alternator
    Charge control solid-state voltage regulator
    Headlight beams (high/low) 60/55 watts
    Tail/stoplights 8/27 watts
    Battery 12V 14AH



     

    Page created by James Woodley © 1998. Last updated July 21, 2003.