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This year, Fox has relaunched its classic helmet and presented it in three equipment lines. In our test, the Top model Speedframe RS, for which Fox charges a mere 250 euros.
In terms of equipment, the Americans go all out. As the only manufacturer in the test they use the exclusive Mips Integra Split. Here, the two layers of a two-part helmet shell (inside and outside) slide over each other to absorb the rotational forces. The system is very complex, but it also reduces the weight somewhat. The Speedframe RS in size M weighs just under 400 grams.
High-quality equipment, but heavy
The other details are also impressive. Naturally, a magnetic buckle from Fidlock is used for the fastening. The head ring is closed with a boa dial and should therefore be able to be finely adjusted to the wearer.
The visor is height-adjustable in three stages, as is the head ring - but only with a push button. Underneath the visor there is a rubber coating to attach the goggles. In addition to a transport bag, replacement pads and an action cam mount are also included in the box.
>> You can find an overview of the 15 bike helmets tested here: 15 MTB helmets tested: how safe these MIPS helmets for trail and enduro are
No optimal fit with Boa fastener
As convinced as we are of Boa fasteners on bike shoes: On helmets, we haven't been able to get too much out of the system so far. There are various reasons for this. Surprisingly, the helmet is difficult to fasten optimally to the head.
You have to tighten the wheel quite firmly so that the helmet sits securely. But then the thin Boa ropes, which are used here instead of a plastic ring, can press against the side of the head - this can become quite uncomfortable in the long run.
Otherwise, the Fox Speedframe RS sits quite comfortably thanks to the extensive padding. Although the Y straps are not adjustable, they are at a good height. The Fox helmet can be opened and closed intuitively using the magnetic lock.
Another drawback: the visor is difficult to adjust with one hand as it is difficult to lock into place. However, goggles and sunglasses (in an extra rubberised holder) can be safely stored underneath.
Fox Speedframe RS in the lab
Like the equally expensive Fizik Kassis the Fox Speedframe RS also performs only mediocre in the lab. The elaborate Mips Integra Split does not appear to offer any advantages in terms of rotation protection.
Then you can also go to the more favourable Fox Speedframe Pro with Mips Air Node (179.99 euros). Alternatively, you can do without the Boa adjustment system and grab the cheapest Speedframe for just 109.99 euros.
The shark's mouth at least shovels a lot of air to the forehead, but further back the cooling doesn't look very good. This may also be due to the double and quite dense shell construction.
The values of all tested helmets in comparison
Info & Price - Fox Speedframe RS
- Price249,99 Euro >> available here
- Weight: 398 gram
- Sizes: S 51-55, M 55-59, L 59-63
- Made inChina
- Colours: 6 colours
- Rotation systemMips Integra Split
- EquipmentMips; Boa closure; Fidlock buckle; Ionic padding; height adjustment via push button
Measured values
- Residual force on linear impact: 99,1 g
- Risk of concussion: 26 %
Evaluation & conclusion
The new Speedframe top model has all the goodies that the helmet market has to offer: Magnetic buckle, Boa fastener, antibacterial padding and the elaborate Mips system with split shell. However, all of this puts pressure on the scales.
The rotation protection called Integra Split does not seem to offer any measurable advantages, the ventilation is only moderate. The Boa fastener offers little traction, but can press sideways (thin cord). The visor is difficult to adjust. In our opinion, the 70 euro cheaper Fox Speedframe Pro would be the better choice.
Stefan Frey
Editor
