Being lighter than its counterpart to the external rotor, ignition internal rotor needs to save your crankshaft, fitted with a lighter oil purifier.
Filters mounted on the switching to the external rotor are made of steel and must be replaced by an aluminum model, lighter to restore the balance between the two tails of the crankshaft and prevent it from breaking clear.

This pack includes:
- 1x ignition internal rotor (lighter, it allows to rise as more honest and a gain in power)
- 1x oil purifier aluminum (lighter than steel, it balances the load on the two tails of the crankshaft during the assembly of an internal rotor)