1999–2005 Kawasaki ZRX1100/1200 | SMART MONEY

MC Garage tips for buying a pre-owned ZRX1100 or ZRX1200 (Z-Rex!).

Kawasaki has never been shy about touting its racing successes, and one of its earliest homages to its on-track prowess was the ZRX1100/1200, a modernized tribute to the bike that carried Eddie Lawson to the AMA Superbike Championship in 1981 and '82. Although old-school—some might say hopelessly outdated—by today's standards, the burly and versatile ZRX makes up in versatility what it lacks in cutting-edge technology.

The beating heart of the ZRX is a liquid-cooled four-cylinder engine that displaced 1,052cc when it first came out and got a boost to 1,164cc in 2001. Based loosely on the ZX-11’s powerplant, the ZRX’s carbureted mill got a retune that punched up the midrange and gave it a broad, flat torque curve—more than 60 pound-feet at 3,000 rpm and peaking at 72 at 6,000 rpm. Peak horsepower was 97 at the rear wheel; it’s not much these days considering the displacement, but it’s adequate just about any day for seat-clenching acceleration. The displacement bump in ’01 upped those figures to 113 hp and 80 pound-feet of torque.

The ZRX’s chassis—steel-tube frame, twin shocks, and an elaborately braced swingarm—has “retro” written all over it. Up front a pair of 310mm rotors paired with six-piston calipers brings the 544-pound ZRX to a halt, while at the other end a single 250mm rotor with a single-piston caliper does its best to help. Both the 1100 and the 1200 roll on 17-inch wheels shod with 120/70 tires up front; the 1100’s 170/60 rear was upgraded to a 180/55 for the 1200.

For a race-inspired bike, the ZRX’s seating position is friendly—no prostrate-yourself-before-the-god-of-speed crouch—but the tiny fairing does little to blunt the wind. A welcome touch of retro is the bolt-on tubular handlebar, which can be swapped out for a lower one. Handling, while far from 600-class quick, is predictable, and the feedback from the chassis inspires confidence. Not too much, though, because at a certain point you realize you’re on a large, heavy bike that’ll bite back if you twist its tail too hard.

Kawi's ZRX, Honda 919, Suzuki Bandit, Yamaha FZ1: Which is the ultimate factory fighter?

Aftermarket shocks and a fork kit do wonders for suspension competence, and the eccentric drive-chain adjusters can be rotated 180 degrees for more ride height at the rear and quicker steering. The brakes are just okay; better pads and braided-steel lines make a big difference. The handsome stock exhaust ends up on the shelf more often than not, replaced by a lighter, louder one. Make sure the jetting has been adjusted and checked out on a dyno; the ZRX gets sulky if it’s not spot on.

Condition is an issue on any used bike but more so on the ZRX; without its signature look it’s still a nice big-bore standard, but so is a used 1200 Bandit, usually for less money. Try for a stock one that’s been garaged because the finish on some of the exterior parts—especially the engine—doesn’t always hold up well. A barn find or a bike that’s been living in a carport should be dragged out into the daylight and inspected closely. Finally, as any ZRX aficionado will tell you, the green ones are definitely the fastest.


Big ol’ brute of a scoot dressed up in ’80s Superbike chic. Good power and handling make the deal even sweeter.


A diet and a workout plan wouldn’t hurt. Often modified, not always well.

Watch For

Dodgy aftermarket muffler, poor jetting, corroded surface finish.


A blast from the past that plays very well in the present. Fast Eddie would approve.


1999 / $3,005
2000 / $3,250
2001 / $3,635
2002 / $3,895
2003 / $4,195
2004 / $4,520
2005 / $4,915

Also Smart…

2002–2007 Honda 919

A contemporary of the ZRX, Honda’s lithe if underpowered 919 proved that a previous-generation supersport engine in a basic chassis could be a fine deal. Light handling, plenty of midrange torque, and Honda quality mark the 919. So does backpack stench from the high-mounted exhaust and neck pain from the bike’s total lack of wind protection.

2001–2005 Suzuki Bandit 1200S

The last application of the vaunted air/oil-cooled GSX-R engine lives here, tuned for about 100 rear-wheel horsepower but a massively wide band of torque. Soggy suspension and brakes made the half-faired 1200S better suited to sport-touring duty than canyon strafing, which is totally fine with the typical Bandit owner.

2001–2005 Yamaha FZ1

High-tech suspension and a nearly full-power R1 engine in a steel-tube chassis doesn’t sound like the recipe for success, but the FZ1’s perfect combination of performance and sporting prowess allied to good weather protection and near-ideal, real-world ergonomics made Yamaha’s naked bike the overdog in the early 2000s.