Choosing the right 21 inch dirt bike tire can influence grip, handling, and overall ride quality across off-road conditions. This guide highlights top 21 inch tire options from reputable brands, focusing on front and rear setups that suit soft to intermediate terrain as well as hard-packed trails. The selections below balance performance, durability, and value, helping riders optimize traction during training, weekend rides, or competition. Each entry includes a concise feature summary to help you compare at a glance and decide which tire best matches your bike and riding style.
| Product | Size / Type | Brand | Notes |
|---|---|---|---|
| Pirelli Scorpion MX Extra X Front 80/100-21 | Front 80/100-21 | Pirelli | Front tire with durable knobs for mid-soft to mid-hard terrain; ideal for training rides. |
| Pirelli Scorpion MX Extra X Front 80/100-21 & Rear 110/90-19 (Two Pack) | Front 80/100-21 & Rear 110/90-19 | Pirelli | Balanced front-rear pair delivering consistent grip across a wider range of terrains. |
| Tusk EMEX T-35 Soft/Intermediate Front & Rear Set | Front 80/100×21 & Rear 110/100×18 | TUSK | Deep tread for loose dirt and loam with a flexible, puncture-resistant carcass. |
| Tusk EMEX T-35 Soft/Intermediate 80/100×21 Front Or Rear | 80/100×21 | TUSK | Single 21 inch option suitable for either front or rear use on soft to intermediate terrain. |
| Tusk EMEX T-45 80/100×21 Front Tire | Front 80/100×21 | TUSK | Knobby front tire designed for intermediate to hard-packed trails with reinforced stability. |
Introduction to 21 inch tires: When selecting a 21 inch tire, consider your bike’s intended use, terrain, and whether you prefer a dedicated front tire, a front/rear set, or a single front option. The tires listed here are positioned for riders seeking reliable grip and durability on off-road courses and trails, with models offering sets for balanced front and rear performance as well as versatile front-only options.
Pirelli Scorpion MX Extra X 80/100-21 Front Tire
The Pirelli Scorpion MX Extra X 80/100-21 Front Tire is designed to deliver reliable grip across a broad range of off-road surfaces, from mid-soft to mid-hard terrains. This front-specific tire emphasizes stability and control, making it a strong choice for riders who prioritize consistent steering response on challenging trails. Its construction emphasizes a balance between stiffness and flexibility, helping the tire absorb impacts during jumps while maintaining predictable handling on loose roots and uneven surfaces.
- Grip and traction across mid-soft to mid-hard terrain
- Front tire ideal for training with a durability-focused design
- Wide, carbon black-knob pattern for stability and long-lasting performance
Pirelli Scorpion MX Extra X Front 80/100-21 & Rear 110/90-19
This two-pack from Pirelli includes both front and rear tires sized for 21 inch front and 19 inch rear. The Scorpion MX Extra X pair emphasizes a mid-soft to mid-hard terrain grip, providing a well-balanced performance for training and competitive riding. The knobs are designed to strike a balance between stiffness for stability and flexibility to absorb landings, while the multi-ply carcass offers puncture resistance without compromising flexibility in uneven terrain.
- Front 80/100-21 and Rear 110/90-19 included
- Balanced grip suitable for multiple terrain types
- Puncture-resistant yet flexible carcass for jumps
Tusk EMEX T-35 Soft/Intermediate Front & Rear Set
The Tusk EMEX T-35 set pairs a front tire sized 80/100×21 with a rear tire 110/100×18, optimized for soft to intermediate terrain. This deep-tread combination reduces slip on loose dirt and loam while maintaining solid braking and cornering performance on harder trails. The set is designed around a durable rubber compound that resists wear, helping riders extend tire life across repeated off-road sessions. The deep pattern improves traction across a wide spectrum of off-road surfaces.
- Complete Front and Rear Tire Set
- Aggressive, deep tread for loose dirt and loam
- Durable rubber compound for longer wear
Tusk EMEX T-35 Soft/Intermediate 80/100×21 Front Or Rear
This 80/100×21 option from TUSK offers a flexible 21 inch tire suitable for front or rear use on soft to intermediate terrain. Its aggressive tread pattern enhances traction, braking, and cornering on varied off-road trails, while a robust construction helps resist wear from rocky sections and mixed dirt surfaces. This tire is ideal for riders who want a dedicated 21 inch option that can be mounted on either end of the bike depending on riding style and terrain.
- 21 inch tire suitable for front or rear use
- Aggressive tread for improved grip
- Durable construction for long-lasting use
Tusk EMEX T-45 Front Tire 80/100×21
The Tusk EMEX T-45 Front Tire in 80/100×21 is designed for intermediate to hard terrain. The knobby tread provides consistent grip on harder-packed trails while maintaining stability through aggressive cornering. This front-specific tire is engineered to withstand the rigors of motocross and rough trail riding, delivering reliable steering feel and predictable feedback in challenging sections of the trail.
- 80/100×21 size tailored for front use
- Intermediate to hard terrain tread
- Reinforced side knobs for stability under load
Buying Guide
Size And Fit Considerations
21 inch front tires commonly use 80/100-21 sizing on the tread width and aspect ratio, while rear sizes vary such as 110/90-19 or 110/100-18 depending on the model. Always verify your bike’s rim diameter and compatibility with the tire’s width and sidewall height. Using a front and rear set designed for soft to intermediate terrain can provide balanced handling, while front-only 21 inch tires offer targeted steering performance on the front axle.
Terrain And Tread Patterns
Tread design matters as much as size. Deep, aggressive patterns excel on loose dirt, sand, and loam, delivering grip during acceleration and traction in loose sections. Smoother knobs suit hard-packed trails with an emphasis on stability and precise cornering. For riders who split between training and competition, consider a mixed setup: a front 21 inch with a rear tire tuned for the terrain you ride most often.
Tube Type Versus Tubeless And Mounting
Most 21 inch dirt bike tires in this list use tube-type construction or are compatible with inner tubes. If you rely on inner tubes, ensure the selected tire size and bead seat match your rim dimensions and tubeless readiness. Tube-type tires can offer simpler mounting for bikes lacking tubeless rims, but tubeless setups can provide puncture resistance benefits on rugged trails.
Front Or Rear Versus Sets
Front tires primarily affect steering stability and turn-in response, while rear tires influence traction and acceleration. Sets that include both front and rear tires help ensure consistent performance and wear across the drivetrain. For riders focusing on grip and durability across a wide range of surfaces, a matched front/rear set can simplify maintenance and optimize handling dynamics.
Brand And Longevity
Brand reputation often correlates with consistent grip characteristics and predictable wear patterns. Pirelli’s Scorpion MX line is known for balanced performance across terrain types and robust puncture resistance, while TUSK EMEX tires emphasize aggressive tread for off-road traction and durability. If you ride frequently on loose dirt or rocks, prioritize a tire with a reinforced carcass and deep tread designed for longevity in those conditions.
Overall, the best 21 inch dirt bike tire for you depends on your riding style, the terrain you encounter most frequently, and whether you prefer a front-only, rear, or paired front-and-rear setup. The selections above provide solid options for riders seeking reliable grip, stability, and durability on a variety of off-road courses and trails.