I am talking about the sealant that Conti recommend for their Tubular tyres. it does gum up teh valves a bit for sure. It also needs to go in BEFORE any valve extender is fitted as it tends to block the narrow valves.
I am talking about the sealant that Conti recommend for their Tubular tyres. it does gum up teh valves a bit for sure. It also needs to go in BEFORE any valve extender is fitted as it tends to block the narrow valves.