ZRX RX: An ExNotes Resurrection

By Joe Gresh

The Carrizozo Mudchuckers have too much disposable income. Just in the last few months they’ve bought a Husaberg 400, a gas-in-frame Buell, a KTM 890, and a Kawasaki Vulcan 750. The boys want to do some high speed touring, like going to the Sacramento mile in California, and they are talking 500-mile days in the saddle. As I look over my operational motorcycles I don’t see anything I’d like to sit on for 500 miles.  But if I include the non-ops there is one that is capable of reeling off 500 miles without breaking a sweat.

I’m talking about the long dormant Kawasaki ZRX1100. The bike is a road burner of the highest order and looks cool as hell to boot. The only problem is the ZRX has sat for 9 years as CT and I wandered the world. Nothing on the thing works.  The last time I rode the bike was on the Christmas toy run in the Florida Keys in 2014. It’s time I changed that.

The ZRX front brake caliper kit, available on Amazon.

This resurrection might take a while because I’m knee deep in concrete projects but at least I can start ordering parts as my Social Security checks roll in.  I’m starting with the brake systems and forks. The front brakes on the Rex are 6-piston jobs and there are two calipers which means I have to deal with 12 pistons. The brakes are great on the Kawasaki but 12 pistons are a bit much.

The rear brake caliper kit, also available on Amazon.

Both master cylinders are frozen, probably full of crystalized brake fluid. I’m going to try and get away with cleaning up the master cylinders as I have not been impressed with the quality of aftermarket junk and I don’t feel like looking up a bunch of part numbers on the Kawasaki sites. I mostly stop with the front brake anyway; hopefully that master will be in good shape. A failure of the rear brake won’t slow me down…that doesn’t sound right.

The ZRX fork seal kit.

I will rebuild the rear caliper using new seals. Don’t try to follow the logic. In addition, the fork seals need replacing and new fork oil dumped in. I might take a stab at greasing the steering head bearings while the front end is apart.

Maxima fork oil. It’s good stuff.

Due to its long slumber there are many, many issues with the ZRX, like:

      • Cooling system leaks, probably from the water pump
      • Broken throttle cable at twist grip housing
      • Chain is worn out
      • Carbs are gummed up
      • Gas tank is full of smelly, gooey gasoline
      • Clutch lever is frozen
      • Clutch slave cylinder is leaking
      • Battery is not there
      • Valves need adjusting

And I’m sure other things will crop up as I get into the project.

Barely broken in, my ZRX is.

I’ve really let this bike down. Believe me, I feel bad about it. Nine years of neglect have taken a huge toll on anything rubber. The good thing is the Rex has relatively low miles (25,000) and has never gone under water so I’ve got good bones to work with. The paintwork is mostly perfect and there are no dents. The bike will clean up and be a stunner. I rode the ZRX from Florida to New Mexico years ago and it will be bookoo-maximus karma if New Mexico is the place where the ZRX1100 rises up to snarl across the rust-red landscape again. Watch this space for updates.

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