Skyline-RR Disc

Light Wheelset from tune

1370 gramm

Skyline-RR Disc Wheels

The lightest road bike DISC wheelset Skyline-RR Disc with aluminium clincher rims. Proving that using disc brakes doesn’t mean a gain in weight!

SAPIM CX-Super Spoke

The SAPIM CX-Super Spoke are lightest steel spoke ever made. The SAPIM CX-Super Spoke has been developed for extra light wheels. A new grade of stainless steel enables SAPIM to reduce the diameter of the spoke, whilst increasing its strength and fatigue resistance. Effectively, the SAPIM CX-Super is 17% lighter than the SAPIM CX-Ray and its strength is increased by 120N in the middle section versus that of the SAPIM CX-Ray.


We use standard bearings. This means you can also buy bearings in Australia if you need to. Ours are just a little special, with two main differences:

  • Our bearings have a higher fat filling grade. 30% is standard, whilst ours are filled to 50%. This not only prolongs their life, but also provides a better seal.
  • Standard bearings have variations in play from their production.
Tune bearings have the play specially determined dependent on their use. One single Tune bearing is not standard – the bearing in the free-wheel body on the left. It is constructed specifically to withstand high forces and last extra long.

Carbon wrapping

The spoke crossings are wrapped with Carbon fibre, which gets strengthened with resin. This increases the wheel quality. The result is that the spoke construction becomes more stable, several components are connected to one stiff, long lasting unit. The increased stiffness leads to a more direct reaction when riding out of the saddle and enables precise steering. In the case of an overload, e.g. by a shock, the most stressed spoke gets released by the spoke it is wrapped with.


Specs Skyline-RR Disc

Hubs Princess Skyline / Prince
Rim Tune Skyline DISC RR (clincher / tubeless-ready!)
Holes 28 / 28
Spokes SAPIM Super CX, stainless steel
, black-chrome
Nipples SAPIM Alu, anodized
Lacing front left radial, front right 3–cross, rear 3–cross
Spoke crossings carbon wrapped
max. rider weight 85kg
Road 100
Allround 50
Climbing 90
Race 60
Stiff 70
Weight 100
Skyline-RR Disc

The lightest road bike DISC wheelset with aluminium clincher rims. Proving that using disc brakes doesn’t mean a gain in weight!

Rims Skyline-RR Disc

Inner width 19.0 mm
Outer width 24 mm
Rim height 22.0 mm
Max. tire pressure 10 bar / 145 psi
Tire width 23-42 mm
ERD 589 mm
Rim weight (±5%) 450g
tune Wheels

The tuning of running wheels has the most noticeable effect when it comes to weight savings. All the wheels are hand-fed, pressed and perfectly centered. Our bikes stand for the highest quality and have proven themselves over millions of kilometers.