Fox is expanding its Speedframe helmet series with the new Speedframe RS top model. The focus here is on the exclusive MIPS Integra Split protection system. This combines a dual-density foam for high and low impact speeds with a low-friction intermediate layer. This design is intended to reduce rotational forces in the event of a fall that would otherwise be transferred to the brain.
The Speedframe is also available in two other, more affordable versions. The Speedframe Pro, which we were able to test before its presentation - the test can be found further down in the text. The third in the group is the Speedframe, which aims to score points with somewhat simpler features and a favourable price.
The Speedframe RS is equipped with a BOA Fit System for a customised fit. This allows the helmet to be micro-adjusted to the shape of the head. The Fidlock SNAP helmet fastener is designed to ensure quick and secure handling, even when wearing gloves. The inner padding consists of a removable and washable Ionic+ lining. According to Fox, this has antimicrobial properties for odour control and is also designed to wick moisture away from the head.
The Speedframe RS has optimised ventilation to cool the head. This consists of ventilation channels in the in-mould EPS foam, which are designed to ensure efficient air circulation. The visor can be adjusted with one hand and is compatible with both sunglasses and goggles. The helmet also has a special holder for sunglasses wearers.
Various materials are used in the construction of the Speedframe RS. The helmet consists of EPS foam (expanded polystyrene) for shock absorption, polycarbonate (PC) for the outer shell and nylon, fabric, TPU (thermoplastic polyurethane), metal and POM (polyoxymethylene) for other components. This combination of materials is intended to provide an optimum balance of protection, ventilation and weight.
In addition to the Speedframe RS, there are two other versions that roll onto the trails with slightly slimmed-down equipment.
The Fox Speedframe MTB helmet is getting a bit long in the tooth and is now getting an extensive update. Back in 2020, the Fox Speedframe Pro in our big helmet test at the start. At that time, the trail helmet scored highly with its very good protection values and its successful adjustment system.
We received a test copy before the official launch. Although we have not yet been able to test the new Fox helmet in the lab, we have already ridden it on a few tours over the winter trails.
The new Fox Speedframe Pro has shed a whole 40 grams compared to its predecessor. However, the Americans have not made any sacrifices in terms of features: the workmanship in particular remains very high quality. In addition to the perfectly operable Fidlock magnetic buckle, which was already available on the predecessor, the helmet now has a lighter mips system (Air Node), which is integrated into the padding.
The Americans have also revamped the adjustment system. The circumferential headband now closes with a finely rasterised Boa wheel. This allows the Speedframe to be adjusted particularly precisely to the head (more suited to elongated head shapes).
Instead of a larger strap, only the thin boa pull cord encloses the head. This can constrict the sides of the head, especially with short hair. In my opinion, the helmet with the new adjustment system also sits less snugly than the old model - but this depends very much on the shape of your head.
Fox Speedframe Pro still does not have a pad on the neck support. This is a shame as it can cause pressure points. In addition, the height of the headrest can only be adjusted using push buttons and not via a simpler ratchet, as found on many other helmets in this price segment.
The visor is triple-adjustable, so a goggle fits well underneath, but the adjustment is very stiff. How good the ventilation actually is with the large air intakes at the front will only become apparent in the course of the season.
The Fox Speedframe Pro remains a stylish MTB trail helmet with high-quality workmanship and a solid adjustment system. The 40 gram weight saving is a good development. Overall, however, the update only brings a few real improvements compared to its predecessor. Our detailed comparison test, which we have planned for this season, will show how well the new Speedframe Pro compares to the competition. - Stefan Frey, BIKE test editor

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