Hello,

I have an NSR 150 SP 2002, Australian model, which was discontinued in 2005. There are still a lot in circulation our cities but as cheap learner legal bikes thay tend to get thrashed and passed on fairly quickly. I think their performance potential is underestimated. Stock, mine produced 27 hp on the dyno and modded, 34 hp. Stock it was good for 167 kph on GPS and 14.4 ss 400 meters at 147 kph. Modded with Tyga pipe, carbon reeds, carburettor, air box and other tweeks, 178 kph and 13.4 ss 400 at 157 kph.
These mods will shorten the life of the motor and increase fuel consumption. My gear box is currently being rebuilt with wear on the mainshaft gears in 2nd 3rd/4th and 5th. The cost to rebuild the box with new bearings and 4 gears is about Aud$250. The complete kit from Tyga is about $700 Aud landed. Tyga is a British company but the parts are made in Thailand for Tyga, the home of the NSR 150. The bike apparently didn't sell well in Thailand because of it's relatively high price but enough was sold to support some after market parts. The biggest gains are with the Tyga expansion chamber coupled with carburettor up size from the MC 21 (250 twin 2 stroke). It may be necessary to go from 152.5 standard main jet to 155 or 157.5 depending on your climate and riding. Go to the Tyga site. Keep in mind that the suspension is not sophisticated and lacks adjustability. The brakes are ordinary. It doesn't stop me going fast but it has lower handling limits when compared to the Aprilia RS125.
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NOMEDEEPS