Although the R5K is the simpler of the two MC18s electronically, by virtue of its PGM-II, it's the more complicated bike to look at. The air correction is more sophisticated than the R2/4J, which is the first thing you will notice removing the fuel tank. The swingarm/rear brake can be arguably be considered more complicated too, with the torque arm arrangement.

The mechanics of the motor however, are largely unchanged from MC16 to MC28, and the overall package is definitely refined over that of the R2/4J. The '89 is a great, and often underrated, bike!

As with ANY new NSR purchase, ensure the RC Valves are clean and move freely by hand. Sticking RC Valves are the number one cause of PGM failure on the NSRs.

Check out the Tech section in the Workshop for plans for the HRC link plates the raise the rear ride height. NSRs really eat up extra rear ride height; the MC18s more than any other model.

The photo of that MC18 above, with the Pro-Arm conversion and NC35 forks is from a build thread in the Members section.
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Andy.
NSR-WORLD.COM

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