Originally Posted by
DiscoClax
Fair call if you were rebuilding an existing vented caliper, however the Zeus kit should be compatible with any LR front 4-pot 'solid' caliper as the seals are designed to work with the spacer specifically and the standard rebate in the caliper housing. That is the way I understand it anyway. Potentially you could use the square o-rings in the Zeus kit if you wanted to - you'd need four per caliper (eight in total)
The long tube-like seal (p/n 3851-739 ?) requires a large through-hole in the spacer and a support tube within it. The Zeus kit uses the simpler and more robust alternative o-ring arrangement with just a small hole for fluid porting between the halves. This is pretty much the same as one of the genuine LR configurations.
I actually have a spacer kit that I got direct from AP that has the long tube type seals and matching spacers, etc, however I did not get the inner support tubes (these are generally just reused, but I was converting) so I never used them and they are brand new in bag. I've had them for years, having sourced those through a contact in the UK at AP while working with them on a project. If any forum member can use them they can have them for postage plus the cost of a beer.... PM me if interested.