Maxxcross SI

The Maxxcross SI is a go-to tire for our GNCC and WORCS pros, and you will be equally impressed by its performance and longevity.

  • Race-proven rubber compound delivers excellent traction in soft/intermediate conditions on the motocross track or off-road
  • Anti-flex knob bridges on side lugs offer solid straight-line stability and enhance grip for aggressive cornering
  • Developed in the Grand National Cross Country series
  • Perfect tire for any intermediate, loamy or muddy terrain

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Developed and tested at the Grand National Cross Country Series, the SI's race-proven tire compound delivers excellent traction in soft/intermediate conditions. Its anti-flex knob bridges on side lugs offer solid straight-line stability. It also features enhanced grip to allow for aggressive cornering. The SI is proof that Maxxis takes performance and durability to a whole new level.

Specifications

Position Size Load Speed Rating Overall Diameter (in) Section Width (in) Max PSI Rim Size (in) Tread Depth (in)
Front 2.75-10 38J TT 15.7 2.99 36 1.50X10 11/32
Rear 2.75-10 38J TT 15.5 3 36 1.50X10 11/32
Front 2.50-10 33J TT 15.4 3 36 1.50X10 11/32
Rear 80/100-12 41M TT 18.4 3.7 32 1.60X12 15/32
Front 2.50-12 42J TT 16.8 2.7 33 1.50X12 9/32
Front 60/100-14 30M TT 19.1 2.9 32 1.40X14 12/32
Rear 90/100-14 49M TT 21.4 4.1 32 1.60X14 17/32
Rear 90/100-16 52M TT 23.5 4.3 32 1.60X16 16/32
Front 70/100-17 40M TT 23 3.3 32 1.40X17 14/32
Rear 120/100-18 68M TT 27.4 5.4 32 2.50X18 21/32
Rear 110/100-18 64M TT 27 5 32 2.15X18 21/32
Rear 100/100-18 59M TT 26.4 4.7 32 1.85X18 21/32
Front 70/100-19 42M TT 24.9 3.3 32 1.40X19 12/32
Rear 120/80-19 63M TT 27.3 5.1 32 2.50X19 21/32
Rear 110/80-19 59M TT 26.5 4.9 32 2.15X19 21/32
Rear 100/90-19 57M TT 26.8 4.7 32 1.85X19 21/32
Rear 120/90-19 66M TT 28 5.3 32 2.15X19 21/32
Rear 110/90-19 62M TT 27.2 5 32 2.15X19 21/32
Front 90/100-21 57M TT 28.1 3.9 32 1.85X 21 15/32
Front 80/100-21 51M TT 27.9 3.8 32 1.60X21 15/32