Adapter Suction Cup Bike Rack 9/12/15/20mm Diameter 100/110mm Axle | Fits ROCKBROS Suction Rack, Easy Install,Suitable for Road MTB

I had no issues with the adapters

Fits Fox 38 and RockShox Zeb forks as Advertised. Survived long downhill decents and curves.

Does what it says on the tin. Perfect adapter for thru-axle.

Update: the seller kindly reached out to me to let me know that I had actually ordered the wrong size adapter as I had accidentally ordered the 15x100mm version. I ordered the correct version and it works great! If only I could return the wrong ones I bought!! I love my rock bros bike rack. But I just got a new bike with a 15x110mm QR axle and so I had to buy these adapters. Unfortunately they’re just too short and don’t make contact with the fork in either side. Not sure how these are supposed to work being the way they are. Seems like they just need to add a bit more width to them and then they’d be perfect. The way they are now, my axel won’t lock down and the bike moves all over the place while driving! Definitely not good!!

Inserts work for my bikes, but I think these cheap plastic pieces should be even cheaper or should have been included with the rack to begin with. No extra slack or wiggle room and fit nicely. 15mm x 100mm for my Mountain bike (Ibis Mojo with Fox fork). 12mm x 100mm for my road/gravel bike (Moots Routt with enve fork).

Works great as described for my thru axle bike. Make sure to take measurements and or just look them up online before ordering.

Ok...So I'm pretty much all done with RockBros period. Their 2 bike suction rack was a nightmarish mess. This is similar weird level lack of quality. Description on Amazon literally says 15x110. Description on the baggie the 2 pieces came in says 15x110. So how come when I install my boost 110mm fork on the rack, there's 10mm of slop left or right in the spacing? Seriously....I get that they want it to have a little bit of "give" to be able to more easily mount while you're holding a 30lb MTB over your car roof, but this amount of wiggle will let the bike slop around left and right and doesn't inspire any sort of confidence that this thing will hold up long term.

Fits perfectly.

Be aware, this is not a full set of different sized spacers as the advert would indicate, especially since there were no options to select the size I actually needed. The size is also not mentioned in the product description and it mentions all sizes so it is an easy assumption that it includes all sizes, especially considering the price, which is not the case. For 170+ AED / $40 for 2 small pieces of plastic bushes it is ridiculous. I really don't know why they should need to be purchased separately anyway, ROCKBROS should send a full set of adapters with the suction cup mounts.