That is a good one to get. And earlier years (pre 1990) don't have tabs on frame for mounting rear master cylinder for rear disk brake.
The frame and swingarm are beefed up a tad starting in 91 over the previous years of that generation of XR. Brakes are a touch better too.
The brake master cylinder on the front doesn't provide as much leverage as a CR master. I always put a CR front master cylinder on when I was racing them in the early and mid 90s... And after trying many different brake pads - I always ended up back with the stock nissin pads. Best feel, performance & wear. You can substitute XR650L brake pads in the front. They have more material to the inboard on the rotor - larger pad for better stopping.
In '96 redesign they started using complete CR spec brakes front and rear....
jeff
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