Apart from slowness, shockingly poor economy and horrible exhaust drone, the 12hp NSR has a lot going for it. The chassis is up to four times the power, the engine tough and the looks flash. Some bikes are so heavily tuned that they blast through the ton on the back of 30 horses, quite easy to end up with a fragile, peaky engine. After 20k, brakes and suspension wear out. Be careful when buying used, lots of dogs around.