I have taken delivery of 5 of these little beauts made especially for Totally TTRs from an aluminium blank on a lathe. Fitted with an O ring to ensure an oil tight seal.
I have had the first sample installed on my project TTR for a few weeks now and, as expected, it has remained totally oil tight.
The original rubber plug is prone to leaking and seem to have a limited life. I can't guarantee it but these should last a whole lot longer if not for the life of the bike.
Fitting is simple. Remove the old rubber plug and clean up the socket. Unscrew the retaining bolt. Grease the new plug and just push it fully into the socket by hand - no force needed. Screw the retaining bolt back in and job done
I am hoping to have some more made but it takes a while and I can't guarantee when another batch will arrive