FastBikeGear offers this as a machining service on your flywheel.
You will need to send your flywheel to us for this work. Turn around is typically less than 5 days.
The standard flywheels typically weigh about 2k's and we lighten them for road use to approximately 1 kg.
We have found that a 1 kg flywheel still works very well for road use allowing your bike to still idle and pull away smoothly from rest.