I take it you mean pounds!
Junk charging circuit, reg/rect and headlight/mirrors/indicators. Get a daytime only MOT. Swap rear bulbs for low power LED versions.
Junk expansion tank and associated hoses, running total loss for the cooling system.
Junk rear brake reservoir - who uses the rear brake anyway?
Carbon fibre bodywork.
Saw off subframe behind riders seat.
Remove kickstart and mechanism.
Carbon wheels.
Junk instruments and fit LCD unit instead.
Use unleaded fuel.
Should get it well below 250...
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