I’m selling my Mad4One FlickFlock hub for €350 (or best offer).
It works well in both freewheel and fixed wheel mode.
Why the reduced price:
I had to replace one of the M4 parts that connects to the mode-switch button. I accidentally used a crank removal tool incorrectly, which bent the M4. To fix it, I had to open the hub, and once the hub is opened the warranty is void. The replacement was carried out by an experienced and skilled bicycle mechanic in Norway, using guidance provided by Marco Vitale at Mad4One. The result was excellent.
The reason I didn’t send the hub to Italy for service is simply the high shipping costs, since Norway is outside the EU.
Why I’m selling:
I really enjoy freewheel riding and have barely used the fixed wheel mode. For that reason, I’ve switched to a dedicated freewheel hub. I hope someone else will enjoy the versatility this hub offers.
Notes:
On rare occasions (about 0–5 times during a one-hour freewheel ride), there is an extra clicking sound from the hub. It feels like it skips one click before the pedals engage. This doesn’t affect functionality, but can be a little annoying. It can most likely be fixed with some adjustments.
I visited the Mad4One factory in Italy in June this summer, where Marco Vitale inspected the hub and found no issues. At that time, only one new FlickFlock was still in stock, so this could become a sought-after product.
The sale also includes the only spare parts currently available for the Mad4One FlickFlock: balls and springs. (See picture.)
Extra info:
I’ll be in Florida during Easter 2026, so if any US buyers are interested and want to avoid full shipping costs from Norway, I could bring the hub with me.
I’ll also be at Unicon in Austria in summer 2026, so interested buyers could inspect and test the hub in person there.
@Wheelou you wont regret it, bargain price. The extra click is common to all the flick flock hubs and only happens occasionally. Rode mine 3 years and no real issues, but it did ratchet on one notch from time to time.
Best tip, buy a crank removal tool from M4O that has a magnetic reversable head, a std crank removal tool wont work and will bend the mechanism. If you ever need to change bearings, rotor, you will need one.
M4O flick flock hubs, are also “laced” 4 cross for strength
Hej Andi, thanks for the tips .
Just one question: why should these hubs be laced 4x cross? I mean, the flange is larger than ordinary hubs, so there’s less space (and need, as I understand it) for for an additional crossing compared to the standard 3x cross.
@Wheelou@Maxence Thats bang on correct, read up on the M4O website, about 4 cross lacing. Its unusual but gives the strongest setup and needed for the warrantee and servicing by M4O. I have had arguments with “knowledgable” wheel builders questioning the 4 cross setup.
Again my advice, Marco at M4O is a great guy, super helpfull, happy to give advice and help. Its his baby and the hubs have been in use for 3 or 4 years now, so alot has been learnt.
My hub was the earliest prototype run No: 23. I did not have any issues and it peformed really well. When laced and wheel built with cranks fitted. You will have waggle on the cranks, and side to side waggle of the wheel, its not solid like a fixed wheel une. Its just how the hub works.
I can send you videos of both, so you know what I mean. Join: FB page “Flickflock Riders” some of the best riders on the planet, plus Marco is admin, so easy access to help and advice
Enjoy, free wheel is a blast, however you may never want to ride fixed wheel again. Its faster, more fluid and coasting, the best high your gonna get on a unicycle.
If I was 20 years younger, I would never have gone back to fixed. Its super difficult. Fixed wheel 3 out of 10. Free wheel 12out of 10. Coasting 100 out of 10
Ok, thanks for clarification. The hub will find a different home, anyway, as it seems. While 500€ still seems a very reasonable price to me, it’s more than I can justify.
The 4x cross lacing could be due to fear of the flange failing, then.
@Wheelou I dont think there is any evidence of the flange failing. Simply put it gives the strongest setup for what the hub is capable of and the forces its put under. Watch some Youtube videos of people riding proper free wheel muni at the highest level, over fairly extreme terrain.
Its not a fixed wheel hub you cannot compare the two. In free, the wheel spins true and faster, it picks up speed super quick, so braking forces are higher, as no back pedal. The hub can spin as fast as you dare or are daft enough to.
Then it has to revert to the forces fixed brings. Hence the strongest build possible.
I seriously don’t understand how you guys are enjoying riding on that thing. Tried a couple of times on my friend’s flickflock uni and it’s just all over the trail, hard to maneuver and unpredictable. Maybe you can get used to it but at that price? very expensive prototypes that are not working quite properly.
