All 2st Weight on the fly wheel

Iv been told i have a weight on the flywheel?

are these easy to remove, and does it make much difference?

They are fairly easy to get off and they can make a big difference on some bikes.

Have any idea what size the weight is ? What bike is it on?

not to worry, talked to the lad who did it, its custom made and is bolted on with two spot welds for safety

I have Husky cr 250 with light ignition and no fly wheel weight
This is very good for wfo MX when you have lots of traction
Have also a Husky wr 250 with the biggest weight that fits
This is magic on the rocks-clay-roots-slop
Must have both bikes here