Replacement Rear Wheels For The Madd Gear Drift Trike Check Your Fit! These Wheels Measure: 6" Wide by 8 1/4" in Diameter (Huffy has changed their wheels over the years). Please measure your old wheels before ordering. We have you covered with easy to install replacement rear wheels set. Set comes with 2 Blow Molded Wheels and 2 Hub Caps. We all know that the Madd Gear Drift Trike provides hours of awesome drifting action and fun! Eventually you are going to need to swap out those fat tread rear wheels for a fresh set! We have you covered with easy to install replacement rear wheels set. Set comes with 2 Blow Molded Wheels and Axle Spacers. These Wheels Measure: 6" Wide by 8 1/4" in Diameter - Supplied spacers allow for these wheels to be used on various other trikes.