Camshaft grinds for XS650 engines in either standard ( 360° firing ) or rephased ( 270° or 277° firing ) configurations are now available from most reputable camshaft grinders.
Cams are also available overseas from Web Cams and Megacycle Cams

Cams offered by Megacycle Cams in the USA.

Web Cams

Yamaha XS 650 Twin (68-85) 4v

.395/.395 280°/280° 240°/240° 59 80-070 regrind only
Broad power range for street and touring.

.395/.395 290°/290° 252°/252° 59a 80-080 regrind only
Good mid and upper end performance for hot street. Requires Performance Valve Spring Kit.

.475/.475 302°/302° 266°/266° 84 N/A 80-101 hard weld
Strong mid and upper end performance for racing engines. Requires Performance Valve Spring Kit.

Valve Spring Kit With Aluminium Retainers Fits 1972-1985 VC-Y65
Kit includes performance dual springs Aluminium retainers, and bottom cups. Fits 1972-1985. Price Per Set (4).
Valve Spring Kit With Aluminium Retainers VC-Y64
Kit includes performance dual springs and Aluminium retainers. Fits 1971 and down. OK to .450 valve lift. Price Per Set
(4).
Valve Spring Kit With Titanium Retainers VC-Y19
Kit includes performance dual springs and Titanium retainers. Must use shortened valve guides for high lift cams with this spring kit. Fits 1975-1983. OK to .515 valve lift. Price Per Set (4).
Valves, Stainless Intake Standard Size IV-Y19
Standard size 41 mm. Price (Each).
Valves, Stainless Exhaust Standard Size EV-Y19
Standard size 35 mm. Price (Each).
We also has available profiles for the a 270° and 277° cranks. Call us for more details.