NSR-WORLD.COM
NSR-WORLD.COM
Although restricted to 45hp* by Japanese licensing laws, every model of NSR250R responds well to tuning.
Each model can be tuned with a varying degree of both difficulty and success.
*NSR250R MC28 is restricted to 40hp.
The NSR250R was only ever officially destined for the Japanese domestic market (JDM), and therefore subject to strict power limits. Consequently, no official full-power settings were ever made available for the stock production bikes.
60hp is hiding inside any NSR250R, & can generally be liberated fairly easily.
However, the guides found on NSR-WORLD.COM are exactly that, guides, and while based on around 30 years of experience and hundreds of dyno runs, any modifications based on the information within these pages is carried out solely at the user's own risk.
By far the simplest of models to delimit is the 1988 MC18-I, closely followed by the 1989 MC18-II and ’90-’93 MC21. The 1987 MC16 is a little more difficult to attain 60hp due to a number of variables mainly a consequence of mid ’80s design, and the ’94-’96 MC28 significantly more expensive to delimit than the rest of the range.
Ironically, both the MC16 and MC28 make for a superb riding experience in stock form, but each for different reasons. The MC16 provides a very unfiltered feeling, with its light weight and almost “prototype” specifications, yet still manages a level of flexibilty unrivalled in 1986. The MC28, despite its 5hp defecit to all other models, is almost revered for its on-road presence in standard trim, due to the refined chassis, advanced PGM-IV electronics, and engine optimisation.
