ProTaper – ProTaper Off-Road Tires, including MXT 04 front and rear tires and SMX 04 front and rear tires in 10, 12, 14, 16, 17, 18, 19 and 21 in. sizes, traction is the most cost-effective performance a rider can add to a machine, and ProTaper brings its cockpit-side reputation to the dirt with a focused tire range. The MXT 04 pattern is the broadest option here, offered in mini sizes like 60/100-10, 60/100-12, 60/100-14, 80/100-12, 90/100-14 and 90/100-16 as well as full-size fitments including 70/100-17, 70/100-19, 80/100-21 front and 100/90-19, 110/90-19, 110/100-18, 120/100-18 and 120/80-19 rear. The SMX 04 tires cover full-size front and rear fitments in 80/100-21, 100/100-18 and 110/90-19M/C sizing. Knob shape and spacing are what a rider feels most: a well-designed intermediate-terrain pattern digs in under acceleration, resists squirming under hard braking and keeps the front tire tracking predictably in ruts and corners, which builds the confidence to carry more speed and use the throttle earlier out of turns. Choosing the right size for the wheel is the first step, and the fitment spread here makes that straightforward.