Product line 07 / 9 · Trucks · ECE R90
Truck Brake Discs
Internally ventilated RK brake discs for commercial vehicle and trailer axles: high thermal capacity, crack-resistant cast alloy and OE geometry – for safe deceleration even with 40 tonnes on a descent.

In detail
Truck Brake Discs by RK-Austria. What sets them apart.
High thermal capacity
Solid friction rings and wide cooling channels absorb the energy of long braking without warping.
Crack-resistant
Alloy and casting process designed for thermal shock – no heat cracks, no premature failures.
OE geometry
Fits common axles of tractor units, semi-trailers and buses – delivered ready to fit.
Technical data
At a glance.
- Design
- Internally ventilated
- Material
- High-carbon grey cast iron
- Scope of delivery
- Single, optionally with bolts
- Internally ventilated
- High thermal capacity
- Crack-resistant
Application
Fields of use
- Trucks & tractor units
- Trailer & semi-trailer axles
- Buses

Brake disc in 3D
Internally ventilated. From every angle.
Ventilated RK discs dissipate heat through cooling channels between the friction rings – for constant braking performance even under continuous load. Rotate the model and see for yourself.
Frequently asked
Questions & answers about truck brake discs.
Yes. Replacement brake parts require type approval to UN/ECE R90 in Europe. RK truck brake discs carry the approval number on the part and on the packaging.
For the common axles and caliper systems of trucks, tractor units, trailers, semi-trailers and buses. Identification is by axle type or OE number – our team helps with identification.
The complete range is held in the central warehouse in Tulln – delivery in Austria usually the next working day, in Europe within a few days. The Middle East and Asia are supplied from our Istanbul warehouse.
Via the enquiry form or by phone: we send range overview, price list and terms for your region. Territory protection for importers on request.
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