MTB helmet testAbus Cliffhanger - pleasantly light trail head protection

Stefan Frey

 · 25.04.2025

When our test editor grins, it usually means: good product. Was the Abus Cliffhanger really convincing in the test?
Photo: Stefan Frey

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With the Cliffhanger, Abus is sending its lightweight trail helmet into the race. In this article, you can find out how the Cliffhanger fared in our extensive laboratory and practical test.

Topics in this article

At least in films and series, a cliffhanger is a dramatic ending that is intended to arouse curiosity about the sequel. However, when you fall off your mountain bike, you want to know that everything went well thanks to your helmet. We put the Abus Cliffhanger through our lab to find out whether a happy ending is likely. The integrated MIPS system should of course also ensure a happy ending, in addition to the low-slung helmet shell. Abus wants to offer a reliable and lightweight companion for trail and enduro excursions with the helmet manufactured in Germany. Project one has already been successful, because at 353 grams, the Cliffhanger is one of the lightest models in the test.

Easy to customise, slim fit

The features are quite impressive and range from the easily adjustable visor and a Fidlock magnetic buckle to the automatically height-adjustable headband. Only the ear dividers are fixed and cannot be adjusted to individual requirements. However, this would be an advantage, as the Y straps are very close to the ears, which may not suit every wearer.

The Y-belts are quite close to the ears and cannot be adjusted. Be careful when trying them on!Photo: Stefan FreyThe Y-belts are quite close to the ears and cannot be adjusted. Be careful when trying them on!State of the art in this price segment: the practical magnetic buckle from FidlockPhoto: Stefan FreyState of the art in this price segment: the practical magnetic buckle from Fidlock

>> 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

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Thanks to its circumferential headband, the lightweight Abus Cliffhanger securely on the head even in rough shaking passages. Caution: The Abus is rather elongated and oval and is less suitable for wide heads. It is nice that the height of the helmet can be adjusted automatically and over a wide range. However, the adjustment system slips back into the starting position very easily by itself. A more stable locking mechanism would have been better here. The dial is also difficult to reach in the upper positions and is so flat that it is easy to pinch your hair. Good: The adjustment system is designed so that plaits can also fit through.

The height of the headrest can be adjusted over a wide range. The locking mechanism does not always remain at the set heightPhoto: Stefan FreyThe height of the headrest can be adjusted over a wide range. The locking mechanism does not always remain at the set heightIn the upper positions, the dial is somewhat difficult to reachPhoto: Stefan FreyIn the upper positions, the dial is somewhat difficult to reach

Positive: The helmet is also easy to ride with goggles. The visor flips up smoothly and leaves plenty of room for moto-style goggles. The Abus Cliffhanger is particularly easy to close with the Fidlock magnetic buckle.

The visor adjustment is smooth-running. There is plenty of room for a pair of goggles underneath. However, there is no suitable opening for sunglassesPhoto: Stefan FreyThe visor adjustment is smooth-running. There is plenty of room for a pair of goggles underneath. However, there is no suitable opening for sunglasses

Abus Cliffhanger in the laboratory

On our test bench, the Cliffhanger proves to be solid and - fortunately - does not live up to its name. The Abus does not achieve top marks, as there is still room for improvement, especially in terms of rotational protection. The MIPS Evolve Core does not seem to be optimally integrated into the helmet.

The MIPS system does not deliver the best values here. The deep ventilation ducts, on the other hand, work very well.Photo: Stefan FreyThe MIPS system does not deliver the best values here. The deep ventilation ducts, on the other hand, work very well.

The three large openings at the front and the deep channels ensure very good ventilation. The Abus Cliffhanger is one of the best in the test alongside the Bluegrass Rogue Core.

The values of all tested helmets at a glance

Risk of concussion in %Photo: Stefan FreyRisk of concussion in %Acceleration in gPhoto: Stefan FreyAcceleration in g

Info & Price - Abus Cliffhanger

  • Price169,95 Euro >> available here
  • Weight: 353 gram
  • Sizes: S 51-55; M 54-58; L 57-61
  • Made in: Germany
  • Colours: 6 colours
  • Rotation systemMIPS Evolve Core
  • EquipmentMIPS; Fidlock buckle; infinitely height-adjustable; visor adjustable; fixed Y-belts; pigtail-compatible; goggle-compatible

Measured values

  • Residual force on linear impact: 104,7 g
  • Risk of concussion: 24 %
The look of the Abus is certainly debatable - but the fit, especially on somewhat narrower heads, is very goodPhoto: Stefan FreyThe look of the Abus is certainly debatable - but the fit, especially on somewhat narrower heads, is very good

Evaluation and conclusion

In the laboratory, the Abus delivers solid values, especially the ventilation works very wellPhoto: Stefan FreyIn the laboratory, the Abus delivers solid values, especially the ventilation works very well

Abus continues to manufacture the Cliffhanger in Germany. The helmet with a rather narrow fit can be adjusted to fit the head perfectly and sits securely and wobble-free even on rough terrain. In the upper positions, the dial is difficult to reach. Large ventilation openings and deep channels ensure optimum ventilation on the ascent. The Cliffhanger absorbs impacts well, but the rotation protection is only moderate. Top features: the low weight and the easy-to-use magnetic buckle.

Stefan Frey is from Lower Bavaria and loves the mossy, loamy trails of the Bavarian Forest as much as the rugged rock of the Dolomites. For technical descents, he is prepared to tackle almost any ascent - under his own steam. As an accessories specialist, he is the first port of call for questions about equipment and add-on parts, while as head of copywriting he sweeps the language crumbs from the pages of the BIKE print editions.

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