Remember that exclusive we got on Tune’s latest Princess Skyline mountain bike hubs? The front weighed just 78g. Well, now a limited Princess 30 years Uli edition shaves another 10% more off what had already become one of the lightest disc brake hubs available, and we know how they did it…
Tune Princess 30 years Uli edition ultralight mountain bike hub
The production Princess Skyline already got down to 84g with the most recent move to centerlock rotor mounting. Then, the preproduction Princess Skyline from back in May had dropped under 78g thanks to more careful machining and the use of carbon endcaps. Now this latest tease brings the hub weight below 70g. How did they do it?
Tune tells us there are three main tricks: those patented carbon endcaps that we broke the story on (which will soon be offered on all Tune Skyline hubs), new lightweight ceramic bearings around the 17mm alloy axle, plus a new secret aluminum alloy from which Tune machines the limited edition hub body.
The Tune Princess 30 Uli edition front hub should be available after Eurobike to fit 12 & 15mm thru-axle & QR wheels, but not Boost spacing, making it an ultralight choice for XC, CX, gravel & road disc. We will have official pricing & availability estimates in a couple of weeks, and hopefully news on a matching ultralight Prince rear hub…