Speedframe

Fox Speedframe MTB Helmets – Trail Protection with Mips

The Speedframe category at Foxracing.si gathers Fox's trail and all-mountain half-shell mountain bike helmets in one place. These are open-face MTB helmets with extended rear and temple coverage, an adjustable visor and Mips rotational impact protection, made for trail, enduro, bike park and everyday off-road riding. Whether you ride flowing singletrack at the weekend or lap steep descents, this is where you compare the Speedframe models, sizes and colourways.

What you will find in the Speedframe range

• Speedframe – the core trail helmet: an in-mould shell, dual-density EPS liner, Mips protection and a tool-free dial fit system. A sensible all-rounder for trail and cross-country riders who want deeper coverage than a road helmet.
• Speedframe Pro – the lighter, better-ventilated version with more open ports, a magnetic Fidlock buckle for one-handed use and premium padding. Aimed at riders who spend long days climbing and descending.
• Speedframe RS – the convertible option with a removable chin bar, so one helmet covers pedalling laps and gravity runs such as enduro stages and bike park days.

All Speedframe models share the same design idea: a half-shell silhouette with goggle-friendly geometry, a peak that adjusts to park your goggles when climbing, and washable liners.

How to choose a Speedframe helmet

• Fit and sizing – measure your head circumference with a soft tape about a finger's width above the eyebrows and compare it with the size chart before ordering. The helmet should sit level, roughly two fingers above the brow, and stay put when you shake your head with the dial only lightly tightened.
• Impact protection – Mips is designed to reduce rotational forces in angled impacts, while a dual-density EPS liner spreads energy from both low- and high-speed hits.
• Coverage and discipline – deeper rear and temple coverage suits trail and enduro; if you ride steep, fast or lift-served terrain, the removable chin bar of the RS adds face protection.
• Ventilation and weight – more and larger vents plus internal channelling help on long climbs and in summer heat; lighter shells reduce neck fatigue on all-day rides.
• Goggle and glasses compatibility – check that the visor lifts high enough to stow goggles and that the strap dividers sit clear of the frame arms.
• Buckle and straps – a magnetic buckle is easier to close with gloves on; flat, non-twisting webbing prevents pressure points.
• Certification – cycling helmets sold in Europe carry the EN 1078 marking, which you will find on the inside label.

Brands

Speedframe is a Fox helmet line, so Fox is the brand behind every model here. Bollé also features among the brands listed in this category at Foxracing.si, so you can compare helmet fit and eyewear options from both.

Frequently asked questions

What is the difference between Speedframe, Speedframe Pro and Speedframe RS?

The standard Speedframe is the core trail model, the Pro adds more ventilation, lighter construction and a magnetic buckle, and the RS adds a removable chin bar for gravity riding.

Do Fox Speedframe helmets have Mips?

Yes, the Speedframe family is built around Mips technology, which lets the liner move slightly relative to the shell to reduce rotational forces in angled impacts.

What size Speedframe should I order?

Measure your head circumference above the eyebrows and match the number to the size chart; if you are between sizes, the dial fit system gives you some adjustment, but a snug, even fit without pressure points is the goal.

Can I wear goggles with a Speedframe?

Yes. The visor adjusts upwards so goggles can be parked on the front of the helmet during climbs, and the strap can be worn over the shell at the rear.

When should a mountain bike helmet be replaced?

Replace it after any crash in which the helmet takes an impact, even if there is no visible damage, and renew it periodically as foam and straps age with use, sweat and UV exposure.

Browse the Speedframe helmet category to compare models, sizes and colours, and pick the trail helmet that matches your riding.