Sun Ringle Black Flag ceramic mountain bike wheelset review

Subtle yet smooth hoops

Our rating 
3.5 out of 5 star rating 3.5
GBP £699.99 RRP | USD $1,096.53
Sun Ringle Black Flag Ceramic Wheelset

Our review

Low-key looks disguise a lightweight and very smooth, if slightly twangy, wheelset
Skip to view product specifications

It would be easy to miss these conventional looking race wheels among all the pimp sets on the market.


The Equalizer 21 rims are skinny enough to make any tyres over 2.1in feel precarious, but their shallow profiles keep them tight and tough.

The 28 super-skinny double-butted spokes at either end mean you’ll need to allow for torque elasticity and wander under braking or hard cornering – but that’s to be expected on a sub-1,500g wheelset.

Not so common are the fantastically smooth rolling ceramic bearings that minimise rolling drag and maximise lifespan.


The freehub needs regular servicing and engagement isn’t all that quick, but they’re damn quick once they’re hooked up, and there are no weird spoke replacement worries.

Product Specifications


Name Black Flag Ceramic Wheelset(09)
Brand Sun Ringle

Available Colours Black Anodised
Weight (g) 1466
Front Wheel Weight 674
No of Holes (Front) 28
No of Holes (Rear) 28
Rear Wheel Weight (kg) 792
Rim Description Black anodized, welded Equalizer 21 rims – disc brake only