The bontrager turbocharger hp floor pump if you39re running your tires above a certain threshhold you know that the constant pre ride pumping can be an unwelcome delay turbo charger hp gets you on the bike with the right pressure faster with a piston bore customized for easier high pressure inflation and an auto select head that fits both schrader and presta valves bontrager turbocharger hp floor pump features tall profile and customized piston make for easier high pressure