1986-1989 Honda TRX250 FourTrax 250R Service Manual, Page 101Get this manual
TRANSMISSIONCRANKSHAFT Countershaft
(1) COUNTERSHAFT (2) C5
'86: 26T)After '86: 25T
I141 C6 151 C3 12BTI
_ N_ OTE '86 C6 and After '86 C6: Not interchangeable 111 COUNTERSHAFT