Feign Unlimited Rev Box (URB) is easy to install with the included plug and play wire harness. URB rev-limit remover that will allow you to get the most out of your 2013+ Up EFI Honda Metropolitan 50cc NCH50. Don't be limited, ride the full potential of your Metro! CNC machined aluminum housing in anodized Orange. Upgrading the Valve spring is recommended to prevent early valve float.
Note: By removing the Rev Limiter you are risking your scooter to engine failure. Customer is solely responsible for engine damage by over reving.