MC18 R6k
The MC18 R6k was the NSR250R SP made in 1989.
It differed from the R5k as follows:
Different front and rear suspension
Dry clutch
Magtek rims front and rear. This resulted in the front brake discs being attached with long bolts and nuts.
It was only produced in the "Terra Racing" livery of white and silver with green number boards.