48v / 1800W Razor February 10, 2021 / b_richardson Upgrade to Razor Dirt Bike to go 35MPH Razor Dirt Bike for $300 This video will instruction how to upgrade Razor Dirt Bike to 48V / 1800W / 35 MPH for $300. This build works on the the following models: MX650, MX500, SX500 Razor Dirt Bike razor dirt bike 35 mphrazor dirt bike 48vrazor dirt bike upgrade Previous post MX650 not worth extra money Next post Razor Dirt Bike “over volt” 48V Lead Acid vs Lithium-Ion