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