RockStop Tubeless Insert | Review

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Can’t Stop The Rock. We’ve been warned repeatedly. It’s been received wisdom for decades, but now, thanks to Rockstop, could Apollo 440 be wrong? There’s a chance. The rock might be stoppable.

Rockstop is made by a UK company, based in Cumbria and named Urofoam. They developed it in collaboration with Grizedale Mountain Bike Hire, and unlike most inserts, which are generally forms of EVA foam, it’s made of a polyeurethane elastomer. That gives it a smooth finish, which is good at shedding sealant.

Rockstop Tubeless Insert
Line up the holes with your valve

It’s available in three sizes: 29in, 27.5in, and a wide version of 27.5in for plus tyres. They sent us some 29in and 27.5in ones, and given the difference in material to other inserts, we were certainly curious.


The rest of David’s review is available only to members.

Review Info

Price:£65 per insert
Tested:by David Hayward for 3 months

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