RobH wrote:Hi
You may be able to work out some of the differences from the part numbers here https://www.cmsnl.com/honda-nsr150rr-1993-p_model50042/partslist/#.XmJVCkB2uUk

Hi, RobH. Thanks. I have downloaded that part catalog. All I can get from that is which parts are different, looking at their number. It doesn't give any information about dimensions or anything else. I have taken notes about what are the exact differences between the SP and RR models:

The connecting rod is the same, and all of the engine, exhaust, front suspension, is slightly different. The rear is the most obvious difference, since the SP is a pro arm and the RR is the classic system with two arms.
So... I read that both models were sold at the same time, the SP being the most expensive version... But why would they do that? I don't think the small differences (besides the pro arm) would be significant in production cost. It's only about 1.5 hp...

Hi "niksfish", and welcome to NSR-WORLD. Smile

I think you're the first 150RR owner here! We have a couple of members with the 150SP, but none with the RR.

I do know someone who may be able to help though, so watch this space.

By the way, your bike looks to be in great condition for its age! Smile

Hi, Andy. Thanks. Yeah, it's in great shape. I'm not sure about the exact km because the speedometer cable isn't the original, so maybe it was used for a while without it. The reader says 35.000 km. The engine was never disassembled so it looks like its in good condition. The only thing it has right now is a scratch on the left side (it wasn't me).

So far I have done these things: Sent the bike to fix an oil leak in the front suspension, new rear pads, new tyres since it had ones from 2008, sent the bike to clean the carburetor and remove the silencer for maintenance (it was like glue), I have decarbonized the first part of the exhaust and the RC valves and aligned it, cleaned the air filter and air box, cleaned and lubricated the chain, and cleaned the whole bike, including inside the frame. It was dirty as hell, I guess it wasn't cleaned in 22 years. That alone took me many days. Oh, I also fixed a few things in the plastics. It had issues with ilding, now it runs like a clock. It was mainly because of the clean carburetor.

The things that I still have to do is: change both grip handles, the rubber of the steps, the rubber that is under the seat, and the complete clutch lever, its from another bike.

I'm not so sure if my front suspension is ok or it is too soft. Some people say they use 10w. I feel it right when I'm riding, except when I hit a bump, it feels like it some play. The thing is that I don't have a lot of experience with bikes, this one is my second, the first was a brand new Yamaha FZ FI. So I don't know if the suspension is ok or not.

Im very happy with this bike, it seems perfect for my current experience as a rider. I will try to improve myself and enjoy it a lot! I was right in getting one of these, sporty two strokes are fun as hell! The bike is quick in acceleration and the sound is cool.