Hi,
KLX250A1
Short rear frame loop, basic wiring, cdi mounted on bracket on headstock
KLX250B1
Longer rear frame loop to suit tool bag with longer fender
full wiring loom, battery under seat, cdi on frame by airbox
KLX250C1
Rare as Rocking horse sh**
Roller bearing cam, clutch cable enters engine from right hand side, also fitted with balancer shaft