A few of us are still riding these older KTMs.
FYI: http://ktmtalk.com/showthread.php?54303 ... ntershafts
From past (other) KTMTalk posts, some front sprockets aren't a tight fit with the countershaft splines and the slop will wear out the CS splines. Street use with street tires without a cush hub as well. As KTM has no more stock (and nobody is making an aftermarket CS), make sure your replacement CS Sprocket fits snugly. Some have suggested using sleeve retainer (seems to be beefy anaerobic thread lock) on the splines.
01-07 KTM RFS countershafts no longer available ... choose front sprocket wisely
01-07 KTM RFS countershafts no longer available ... choose front sprocket wisely
Safiri Mike
Current: 01 F650-GSDakar-RWB; 02 EXC-453 (orig. MXC 400); 05 EXC-450 ; 13 CRF-250L; 17 CRF-125FB; 06 KLX-110 (132); 02 TTR-125L
Gone and missed (but no regrets): 01 LC4E-400-Grey
Gone and not missed: 73 AT3, 85 K100RS
Current: 01 F650-GSDakar-RWB; 02 EXC-453 (orig. MXC 400); 05 EXC-450 ; 13 CRF-250L; 17 CRF-125FB; 06 KLX-110 (132); 02 TTR-125L
Gone and missed (but no regrets): 01 LC4E-400-Grey
Gone and not missed: 73 AT3, 85 K100RS