SMK
SMK Allterra X-Sprint MA261 Black / Anthracite / Grey Motocross Helmet
The SMK Allterra X-Sprint MA261 Black / Anthracite / Grey Motocross Helmet is a purpose-built off-road helmet for motocross, trail and enduro riding. This Black / Anthracite / Grey version combines SMK's goggle-friendly Allterra design with current ECE 22.06 approval, secure Double-D fastening and a removable peak.
Off-road protection and comfort
SMK uses two outer injected EIRT shell sizes across the Allterra range to balance impact protection with a comfortable fit. The open eyeport is deliberately wide to accept MX goggles and preserve a broad view of the track, while the peak can be adjusted or removed to suit the rider and conditions.
Multiple intake vents feed a channelled airflow system with rear exhausts. Inside, the breathable hypoallergenic liner is removable and washable, with moisture-management and antistatic properties for repeated off-road use.
Key features
- ECE 22.06 approved off-road motorcycle helmet
- Energy Impact Resistant Thermoplastic (EIRT) shell construction
- Two outer shell sizes across the model range
- Padded Double-D ring chin-strap fastening
- Adjustable and removable sun peak
- Extra-wide eye aperture designed for MX goggles
- Multiple air intakes with channelled rear exhaust ventilation
- Removable, washable and hypoallergenic comfort liner
- Moisture-management and antistatic interior fabric
Technical specifications
| Brand | SMK |
|---|---|
| Model | Allterra X-Sprint |
| Manufacturer colour code | MA261 |
| Colourway | Black / Anthracite / Grey |
| Helmet type | Motocross and off-road |
| Shell | Injected EIRT thermoplastic |
| Approval | ECE 22.06 |
| Fastening | Padded Double-D ring |
| Peak | Adjustable and removable |
| Eye protection | Open goggle aperture; goggles are not included |
| Interior | Removable, washable, hypoallergenic, moisture-managing and antistatic |
SMK helmet size guide
Measure around the widest part of the head, above the eyebrows and ears. Use the measurement as a starting point and check that the helmet sits evenly and snugly without pressure points or gaps.
| Size | Head circumference |
|---|---|
| XS | 54 cm |
| S | 55 cm |
| M | 57 cm |
| L | 59 cm |
| XL | 61 cm |
| XXL | 62 cm |
What is supplied?
- One SMK Allterra X-Sprint MA261 motocross helmet
- Fitted adjustable and removable peak
MX goggles are not included and should be selected separately for the rider's face shape and riding conditions.
Questions and answers
Is the SMK Allterra road legal?
It carries ECE 22.06 approval. Its open eyeport and peak are configured primarily for motocross and off-road riding, so suitable eye protection must be worn.
Can I use motocross goggles?
Yes. The extra-wide aperture is designed to hold MX goggles securely while maintaining a broad field of view.
Can the lining be washed?
Yes. The comfort liner is removable and washable. Follow SMK's care instructions and allow it to dry naturally before refitting.
Moto Central fitting support
Helmet sizing is only a starting point because head shape and liner contact matter as much as circumference. Moto Central can help with fit in our Wolvey showroom, and the videos below explain how to measure correctly and recognise a helmet that is the right size but the wrong shape.