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Special hubs from tune: KINGkong BOOST hub axle hub allows a complete adjustment of the hubs with wider hub bodies and axles.

Technical data

Body aluminium 7075
Manufacturing method CNC-machined, one piece body, anodized
Holes 28 / 32
Hub spacing 110 mm
Bearings 2 deep-groove ball bearings
Sealing double contact seals
Clamping method 15 mm Thru-axle
Hole Ø (l/r) 55,5mm
Flange distance (l/r) 27,4/ 37,0 mm



The KINGkong Boost front hub with 110 mm hub spacing and Kong Boost rear hub with 148 mm hub spacing differs in some fundamental points from the hubs with 100mm and 135/ 142mm hub spacing. When X-12 rear stays were introduced only the hub spacing was increased, the geometry of the hub (flange distance and bearing support points) stayed uninfluenced. The Boost standard allows a complete adaptation of the hubs with wider hub body’s and axles. A conversion of current hubs to the Boost standard is therefore not possible. However, the new standard offers some advantages:

  • The flange distance increases for both hubs. Thereby stiffer wheelsets can be build, especially noticeable for 29er. One point of critics for bigger wheels was the poor stiffens. By the bigger hub spacing of the Boost standard it is possible to realise 29er wheels that are on a level field with 26″ wheels!
  • The bearing support points can be wider and therefore be constructed stiffer and more stable.

Certainly the topic weight plays a big role in our development, here the King Boost & Kong Boost only bring 121g & 214g on to the scale!



KINGkong Boost DE/EN

Download (1.62 MB)

tune FAQ

Is it possible to put a figure on the “considerably stiffer” Boost towards the standard widths.

In general we keep a low profile with percentage figures as the increase of the lateral stability may differ on the several rims. It can be said, that the stiffness of a 29er rear wheel with 148mm width is about 20% higher than as with 142 mm. The lateral stability increases about 17% at the front wheel due to the Boost standard.

Hier bist Du richtig! Du brauchst geile Teile für Dein Rad >> klick hier!
Hier bist Du richtig! Du brauchst geile Teile für Dein Rad >> klick hier!

Delivery time: 3-4 days

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