Re-phased camshafts for re-phased crankshafts.
How to install a RZ250 alternator on an XS650
Where to get modified camshafts for your XS650
1978-83 Yamaha Special
1978 Yamaha XS650F
1977 Yamaha XS650D
1976 Yamaha XS650C
1975 Yamaha XS650B
1973-74 Yamaha TX650 & TX650A
1972 Yamaha XS2