Select type, year, make, and model
Dominate the track and lock in maximum line precision with the high-performance ProTaper MXT 04 Front Tire, engineered to handle the intense speed and handling demands of modern motocross racing. Built with an advanced intermediate-to-hard terrain carcass, this premium front tire delivers exceptional block stability to aggressively resist knob tearing on hard-packed loops and baked clay. Its specialized tread matrix provides crisp steering response and stable cornering tracking, giving you the front-end confidence to charge hard into rough ruts.
Part number 023300 features a standard 80/100-21 sizing profile engineered explicitly for a standard 21-inch front wheel arrangement. Meticulously cross-referenced against factory assembly logs, this bias-ply off-road tire serves as the exact factory-spec original equipment (OE) size or premium aftermarket upgrade for the front position on almost all full-size motocross and cross-country race bikes from 1990 to Present, including:
CRITICAL TUBE-TYPE & WHEEL RIM ASSEMBLY WARNINGS:
**Tube-Type (TT) Core Logic:** The ProTaper MXT 04 is strictly a **Tube-Type (TT) tire**. It does not feature the specialized inner sealing bead required for tubeless configurations. **You must install a high-quality 21-inch inner tube and heavy-duty rubber rim strip prior to inflation**. Attempting to mount this tire without an inner tube will result in immediate, complete air pressure loss.
**Rim Lock Recommendation:** Because off-road racing demands lower operating tire pressures (typically 11 to 14 PSI) to maximize soil footprint traction, Mad Lads Moto strongly advises inspecting your front wheel's mechanical rim lock during installation. Running low pressure without a properly torqued rim lock will cause the tire to spin on the aluminum rim during heavy braking, instantly yanking the inner tube's valve stem out at the root and causing an explosive flat tire. Always use a tire lubricant and ensure the bead seats uniformly before final torque settings are applied.
| Attribute | Specification |
|---|---|
| Tire Size | 80/100-21 (Metric Front Spec) |
| Mounting Position | Front Position Only |
| Terrain Classification | Intermediate to Hard Terrain |
| Tire Construction | Bias-Ply Heavy-Duty Motocross Casing |
| Tire Type Layout | Tube-Type (TT) - Requires Inner Tube & Rim Band |
| Recommended Rim Width | 1.60 Inches |
| Recommended Operating Pressure | 11 - 14 PSI (Adjust based on specific track hardness) |
| Sidewall Styling | Blackwall with Permanent Branding Callouts |
| Manufacturer Part Number | 023300 |
US Dollars
