140mm Brass Auto Tire Valve Extension Adaptor, Air Tyre Stem Extender Inflation Stright Bore for Motorcycle, Bike, Mower and Scooter(140mm)

Works good

This is a well made product. I bought the 100mm size figuring it would easily clear the E450 front hub caps. It is long enough but the nut up near the top used to tighten it where the hub cap cutout is. I replaced this with the 140mm size made by the same company. Just be sure you know where that nut will be before deciding what length to purchase.

I got this to use with my Niu KQI3 Max electric scooter, the rear wheels valve is really hard to reach with your fingers and when pumping the tires, removing the pump causes a significant amount of air loss since it takes a while to unscrew (due to it being hard to reach). With this I can screw it on and quickly screw it off as it extends out a good enough distance from the wheel. Highly recommended if you are in a similar situation.