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25 Years
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Only online and Click & Collect
Currently available via the store
Display mfg part numbers
size S (52-56cm) mat/gloss blue/white fasthouse 91210493 93.19€
MPN 7128815
size M (55-59cm) mat/gloss blue/white fasthouse 91210494 93.19€
MPN 7128816
size L (58-62cm) mat/gloss blue/white fasthouse 91210495 93.19€
MPN 7128817
size S (52-56cm) mat/gloss black/gold fasthouse 91210490 96.55€
MPN 7127651
size M (55-59cm) mat/gloss black/gold fasthouse 91210491 96.55€
MPN 7127652
size L (58-62cm) mat/gloss black/gold fasthouse 91210492 96.55€
MPN 7127653
size S (52-56cm) mat/gloss black 81211207 92.18€
MPN 7088138
size M (55-59cm) mat/gloss black 81211208 92.18€
MPN 7088139
size L (58-62cm) mat/gloss black 81211209 92.18€
MPN 7088140
size XL (61-65cm) mat/gloss black 81211210 92.18€
MPN 7088141
size S (52-56cm) mat white/black fasthouse 81211602 91.68€
MPN 7101553
size M (55-59cm) mat white/black fasthouse 81211603 91.68€
MPN 7101554
size L (58-62cm) mat white/black fasthouse 81211604 91.68€
MPN 7101555
size S (52-56cm) mat gray/red 91210650 96.55€
MPN 7142495
size M (55-59cm) mat gray/red 91210651 96.55€
MPN 7142496
size L (58-62cm) mat gray/red 91210652 96.55€
MPN 7142497
size S (52-56cm) mat brick red/ocean 91210647 97.39€
MPN 7142489
size M (55-59cm) mat brick red/ocean 91210648 97.39€
MPN 7142490
Please select a variant.

The Boundary Breaker

A helmet should be well ventilated, protect your head and fit so well that you quickly forget it after putting it on on your long backcountry tours. The Bell Sixer meets all of these requirements with its integrated MIPS® technology, goggle compatibility including strap guide on the back and the height-adjustable visor. The whole thing is rounded off by the integrated light or camera mount, as well as the unparalleled comfort of the close-to-the-head fit.


specification description
area of application MTB trail ride, tour
Material outer shell polycarbonate
Number of ventilation openings 26 (4 forehead vents)
pads X-Static® pad
adjustment system Float Fit Race™ with integrated MIPS system
locking system No-Twist Tri-Glides™ harness guide
head circumference 52-56cm (size S), 55-59cm (size M), 58-62cm (size L)
extras 4 levels adjustable visor / glasses gripper
weight approx. 395g (size M)

Technologies used

In this chapter we explain the technologies that the manufacturer uses in this product.

Fusion In-Mold Polycarbonate Shell
The EPS foam is injected into the thin microshell shell while it's still in the mold (or "mold," which explains the name) rather than molding it separately and then gluing it on later. This process was first introduced by Bell and is now the standard for all demanding helmets.

Float Fit Race™
Bell's newest fitting system is slim, light and incredibly versatile. Float Fit Race™ offers a 22 mm height adjustment and additionally a finely rastered width adjustment of the padding at the back of the head. The system is seamlessly connected to the MIPS, which helps the helmet "disappear" once you put it on.

X-Static® Pads
The X-Static XT2® pads are woven with silver threads. Fast-drying and antibacterial, they work against odors. In addition, the X-Static® pads give the driver a cooling feeling when it is hot and a warming feeling when it is cold thanks to their thermal properties.

The MIPS® safety system was developed to provide additional protection for helmets in numerous accidents. In certain impact situations, the MIPS system can reduce dangerous forces that might otherwise be transmitted to the helmet wearer's head.

1. Conventional helmets are designed and tested for a straight impact. In most cases, however, the impact is at an angle, which can cause rotational movements for the head.

2. This rotational movement can cause brain injury.

3. The low-friction shell is designed to help reduce rotational movement of the head in certain cases of angled impact.

Straight impact - oblique impact

The brain is typically more sensitive to rotational motion than linear motion because it has a shear strength similar to that of water or gel. When rotational movement causes different parts of the brain to move at different times, the tissues can be stretched, causing concussions or other brain injuries.

Rotational motion is a common cause of concussion and more serious brain injury from an oblique impact to the head. The MIPS system consists of a low-friction shell that is fixed inside the helmet. The low-friction shell is designed to slide slightly inside the helmet in the event of an accident, allowing forces to be directed away from the head. It is said to help reduce the risk of brain injuries.

Most conventional helmets are designed for a straight impact, but in most cases the impact is at an angle. The low-friction shell can reduce the rotational forces of an oblique impact.

Security system with the brain as a model

Unlike conventional helmets, which are primarily designed and tested for a straight impact, the low-friction shell of the MIPS system mimics the brain's own protection system against rotational movement. The cerebrospinal fluid is our natural defense system that allows the brain to move offset to the skull.

scope of delivery

  • 1 x Bell Sixer MIPS helmet (see item description for details)
Bell Sixer MIPS helmet size S (52-56cm)  mat/gloss blue/white fasthouse
Bell Sixer MIPS helmet size S (52-56cm)  mat/gloss black/gold  fasthouse
Bell Sixer MIPS helmet size S (52-56cm)  mat/gloss black
Bell Sixer MIPS helmet size S (52-56cm)  mat  white/black fasthouse
Bell Sixer MIPS helmet size S (52-56cm)  mat  gray/red
Bell Sixer MIPS helmet size S (52-56cm)  mat  brick red/ocean
At the moment we can offer the Size chart only in English

Über die Marke Bell

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