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it uses B5 bearings with Si3N4 ceramic balls offering excellent smoothness and lightness
wherever the helmet is used
Raleigh Calispel 1
The bearing for frame/wheels BLACK BEARING B5 689-2RS is a premium replacement model
it features a quality design in 7075-T6 aluminium and its surface is anodised to increase durability
Frein Avant HOPE TECH 4 EVO GR4 Aviation Argent/Bleu SOFT-isolant it uses B5 bearings withThe HOPE TECH 4 EVO GR4 brake embodies the pinnacle of technology and British craftsmanship. Designed to deliver a perfect feel and absolute control, it represents the ultimate evolution of the renowned Tech 4 system. Entirely machined from a block of 2014 T6 aluminium, it combines precision, power and reliability to meet the demands of the most extreme disciplines, including downhill and e bike. The TECH 4 EVO master cylinder benefits from
