The best head...



See that tiny crack between on of the valve seats and the spark plug hole, that's a known weak spot on the 500/600/650 heads, dunno what to do about that at the moment. It's a shame because that head has new valve guides and HD valve springs and Kibblewhite valves in it at the moment.

The cases that match the frame...



I've got a gearbox from a 650 Dominator to go in as the original 500 box kept jumping out of 5th under power.

Spot the difference....



One is the standard XBR crank, the other a XL600 crank, the XL didn't have a leccy boot so the bit the flywheel goes on is shorter, no starter gear on the flywheel.

Means I and junk all the leccy start stuff, fit the lighter XL flywheel and use the magnesium side case without the starter clutch in it.