Hi mate, think u got it wrong..NSR 125 R indeed has 2 versions…
one is the normal production one while one is the sports production
one… the SP version is kickstart, uses a single ring racing piston,
has a seperate CDI for controlling the valve.
Different wire hirness. uses pgm3 engine management system. this r
the differences i know… not quite sure bout others already.. hope
this help. the SP version is commonly known as the 125cc SP.