Bit of a noob question. I have internally routed disc hoses in my Highball. The SRAM brakes have gently stopped working and between them seizing pistons and the weird action in giving up and going to XT. But I wondered about just removing each end and reusing the existing hoses instead of the faff of putting new ones in. Can I ?

I wouldn’t. Not sure if the compression/volume is the same but Sram will have used Dot 4/5.1 and Shimano is mineral oil and traces of it might bork your seals potentially. It’s easy to tow new hoses through if you already have the old ones installed.

No thanks.

Don’t Santa Cruz’s have an internal guide for brake hoses? So you just push it through that, less faff than disconnecting both ends.

I’d not.

If the old ones are in use them to pull the new through.

Shouldn’t be a bad job

Its likely that the sram hoses have crimped on fittings which you will have to cut off (mine did) then use one of those joining things to pull the new hose through.

Ok – unanimous ! Thanks all.

Push a gear inner up the hose
Pull the old hose out.
Push the new hose up the brake inner.