Special Freewheel kits

Each kit replaces the standard 36T engagement with a higher teeth pattern.
Special freewheel kits are compatible with HyperBoost R, HyperRear2, HyperCamber2, Hyper JR, Hyper VR.

Bearing options
45T Shimano MTB 11s

- Enduro stainless
- HDC ceramic
- Stainless Ceramic


- special freewheel body
- special floating ring
- 1set of standard springs
- 2 bearings
- 5cc of Alugrease Super1
- Special Lock-Ring (Shimano 12s)


45T Shimano Road 11s *
Fits only 142+ frames**
60T Shimano MTB 12s
Special Lock-Ring included
48T XD Drive

48TS XD Drive
Lower friction
60T XD Drive
72T XD Drive
Open Program *

Testing: 45T, 48T, 48TS, 60T patterns have already been race tested for over 3 years and all showed good durability.

(*) Open test Program: 72T kits benefit of a special warranty condition:
end-user feedback registration allows for one free replacement kit if worn-out part are returned to us within 2019.

(**)45T Shimano Road 11s
This special wider freewheel can be mounted on 142+ frames
Both X-12 and 135mm frames do not offer enough room to accept it.

Notes about Shimano MTB 11s and Shimano Road 11s cogs
Current Shimano Road11s cogs requires a wider fitting than Shimano MTB11s cogs.
Our MTB hubs fit the Shimano MTB 11s.
Our Road hubs fit the Shimano Road 11s.
This in order to use all the possible spoke camber that sensibly influences the lateral stiffness of rear wheels.


The new Shimano MTB 12s compatible freewheel kit features 60T and includes is specific lock-Ring.

Each kit includes freehub-body, Float-ring, bearings, springs and our specific Alugrease S1.

Read well manual instructions before installing the new freewheel.


100% made in Italy