There has been a recent query regarding the availability of Routemaster exhausts to suit the original layout as well as some Cummins C-series and Iveco engined Routemasters.
Here is the reply we received today from Dinex Exhausts Ltd.:
"Regarding the Routemaster exhaust system, this system is still included in our Bus catalogue, and the parts are held in our UK warehouse here in Warrington.
Based upon demand from time to time, there may sometimes be a delay in replacement of the parts back into stock, but as there is still a requirement, the system remains available.
I trust this answers your enquiry, but please do not hesitate to contact me again if you require further information."
