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 an enhanced grip to allow for aggressive cornering. The SI is proof that Maxxis is taking performance to the next level.

Features and Benefits

• Race proven rubber compound delivers excellent traction in soft/intermediate conditions.
• Anti-flex knob bridges on side lugs offer solid straight-line stability and enhance grip for aggressive cornering.
• Developed during Grand National Cross Country series.
• New for intermediate, soft and mud terrain.

Maxxcross SI Specification Table 

Front Size	Part Number	Rim Size (in.)	Load/Speed Rating	O.D. (in.)	O.W. (in.)	Max PSI	Price
70-100-17	M731111	1.40 x 17	40M	23.00	3.27	32	$45.95
80-100-21	M731211	1.60 x 21	51M	27.95	3.82	32	$65.95
Rear Size	Part Number	Rim Size (in.)	Load/Speed Rating	O.D. (in.)	O.W. (in.)	Max PSI	Price
90-100-14	M731275	1.60 x 14	49M	21.46	4.13	32	$52.95
100-100-18	M731214	2.15 x 18	59M	26.46	4.72	32	$66.95
110-100-18	M731217	2.15 x 18	64M	27.09	5.00	32	$73.95
120-100-18	M731246	2.50 x 18	68M	27.40	5.20	32	$72.95
100-90-19	M731216	1.85 x 19	57M	26.85	4.72	32	$70.95
110-90-19	M731224	2.15 x 19	62M	27.24	5.00	32	$77.95
120-90-19	M731208	2.15 x 19	66M	28.03	5.31	32	$84.95

O.D. = overall diameter
O.W.= overall width

To see Motorcross Tire Ratings Click Here