The standard NSR Magteks are 3" and 4.5". RS Magteks are available in a number of sizes; most common of which are 3.5" for the front, and I think 5.25" for the rear. Someone else will have to confirm the most common rear size, but I know they are availabe in at least 5", 5.25", and 5.5".

The wider the wheels/tyres the slower the steering generally becomes, and the more important fine tuning of geometry and suspension setup becomes to overcome this. The NSR can certainly be made to work with a 3.5"/5" combination as I've ridden a couple of MC21's on these sizes that handled impeccably, but they were both running HRC F3/RS suspension too, and I've ridden otherwise standard MC21's with oversized tyres that handled awfully! Correct setup is crucial.

Once you have a reliable dyno reading you will have an idea of what options are open to you. (Ideally you want to test a stock bike at the same time, as they are bang on the restricted limit from Honda and this gives a really good indication of how accurate the dyno is in the lower range!)
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Andy.
NSR-WORLD.COM

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