Maxxcross SI
A competition-bred motocross tire built for soft-to-intermediate dirt — loam, sand, and berms are where this thing lives.
motorcycletireco.comPrices use MTC dealer formula · Load/speed index explained in the FAQ below
Live pricing · Walk-in mount & balance available
🛞 Running a spoked wheel? Moose Offroad Medium Duty Tubes fit 60/100-14 — from $10 →| Pos. | Size | Load/Speed | P/N | MFR Part # | UPC-A | Our Price / MSRP |
|---|---|---|---|---|---|---|
| FrontOOS | 60/100B14 | — | 870-8051 | TM19810000 | 4717784501666 | — |
| FrontOOS | 80/100-21 | — | 0312-0560 | TM00100200 | 4717784519821 | $83.67$105.00Save $21 |
| FrontOOS | 90/100B21 | — | 870-8055 | TM89947000 | 4717784501734 | — |
| RearOOS | N/A | — | 870-8056 | TM10376000 | 4717784501895 | — |
| RearOOS | 100/90B19 | — | 870-8062 | TM87916000 | 4717784501765 | — |
| Rear | 110/100-18 | — | 0312-0562 | TM00214900 | 4717784519913 | $88.51$111.00Save $22 |
| RearOOS | 110/90B19 | — | 870-8064 | TM78724000 | 4717784501826 | — |
| RearOOS | 120/90B19 | — | 870-8066 | TM79108000 | 4717784501871 | — |
| RearOOS | 90/100B14 | — | 870-8058 | TM26275000 | 4717784501925 | — |
Maxxis Maxxcross SI Tires in Orange County — MTC
At Motorcycle Tire Center in Orange, CA, we stock the Maxxis Maxxcross SI for the off-road and motocross riders across Orange County who need a competition-proven dirt tire — not a compromise. Whether you're racing weekends in the surrounding desert or tearing up local trails, the Maxxcross SI's soft-to-intermediate compound and anti-flex knob design deliver the traction and durability that serious off-road riding demands. We carry both the 80/100-21 front and 110/100-18 rear to cover the most common motocross fitments.
We sell the Maxxcross SI below MSRP, and if you bring your bike or wheels to our Orange shop, our walk-in mount and balance service has you back on dirt fast — mount is $69 per tire, balance is $9.95, and disposal is $3.50. No appointment necessary for most installs. Riders from Irvine, Anaheim, Mission Viejo, Huntington Beach, Fullerton, and Newport Beach stop in regularly because we know motorcycle tires and we carry the right inventory.
One thing we'll be straight with you about: the Maxxcross SI is a dirt-only tire. If you're riding pavement between trail sections or commuting on the same bike, this is not your tire — and we'll tell you exactly what is. Questions about sizing, fitment, or whether the Maxxcross SI is the right call for your riding style? Call us at (714) 516-9059 or walk in and talk to someone who actually rides.

A race-bred ATV motocross tire built for holeshots, rutted corners, and riders who treat every practice lap like a moto.
A race-bred ATV motocross tire built for holeshots, rutted corners, and riders who treat every practice lap like a moto.
Built strictly for ATV motocross competition — a dominant track tire for competitive and serious practice riders, with no real-world street application.

Purpose-built desert and rocky terrain race tire engineered for durability-first riders on KTM and Husqvarna competition machines.
Purpose-built desert and rocky terrain race tire engineered for durability-first riders on KTM and Husqvarna competition machines.
The Desert IT is built for desert racers and rocky-terrain riders who need a tire that survives punishment first and worries about versatility second.

A durable, race-proven intermediate-to-hardpack motocross tire built for riders who want consistent grip and long-lasting performance across multiple sessions.
A durable, race-proven intermediate-to-hardpack motocross tire built for riders who want consistent grip and long-lasting performance across multiple sessions.
Best suited for amateur and developing motocross riders who log serious track time and need a durable, predictable tire that performs across intermediate to hardpack conditions.

A purpose-built intermediate terrain motocross tire built for riders who face changing conditions from gate drop to checkered flag.
A purpose-built intermediate terrain motocross tire built for riders who face changing conditions from gate drop to checkered flag.
Best suited for motocross racers and aggressive trail riders who regularly face mixed or transitional soil conditions and need a tire that holds up all day

Purpose-built desert racing rubber for riders who need one tire to handle sand, hardpack, and rocks without flinching — miles from nowhere.
Purpose-built desert racing rubber for riders who need one tire to handle sand, hardpack, and rocks without flinching — miles from nowhere.
The Desert IT is the go-to choice for desert racers and remote backcountry riders who need a tire tough enough to finish — not just start.

A purpose-built desert and rocky terrain tire for enduro riders and backcountry explorers who demand durability over everything else.
A purpose-built desert and rocky terrain tire for enduro riders and backcountry explorers who demand durability over everything else.
Built for serious enduro riders and desert explorers who need a tire that survives punishing terrain without sacrificing traction on hardpack and rock

A race-tested motocross tire built for soft-to-intermediate terrain — predictable, durable, and priced for serious competitors who ride more than once a week.
A race-tested motocross tire built for soft-to-intermediate terrain — predictable, durable, and priced for serious competitors who ride more than once a week.
Best suited for amateur and intermediate motocross racers who need a durable, predictable tire that handles changing track conditions without breaking the budget.