Some exhausts tend to leak oil around their slip joints and this magical rubber tube is designed to eliminate that. This simply slips over the stinger pipe that attaches to the tailcan silencer and with a drop of Threebond applied, no more oily mess will seep out either onto your engine or over your bodywork. Sorted.
The inside is stepped as can be seen in the pics and this tube simply slides over and remains in place.
The measurements of our Protti exhausts and the exhaust joint rubbers needed are as follows:
X53k Protti exhaust Super Tourer for SST265 = 28mm / Sleeve needed X55c28
X53t Protti exhaust for SS, TS1, Imola etc. = 28mm / Sleeve needed X55c28
X53tl Protti exhaust for SS, TS1, Imola etc. = 30mm / Sleeve needed X55c30
X55 Protti exhaust for SS, TS1, Imola etc. = 32mm / Sleeve needed X55c32