APT are Mongoose Dealers and can supply any of their products at competitive prices.
Additionally, Mongoose have, for some time, offered 2 different systems for the RS Turbo. One is 2.5" Bore, with 3 different Tailpipe options.
However, there is one with a larger 3" Bore, but you have to settle for the 4" Inwardly-rolled Silenced Tailpipe (which they did for noise reasons), rather than the favourite 4" Outwardly-Rolled Tailpipe.
I have arranged for a batch to be made with the 4" Outwardly-Rolled Tailpipe and will do them for £399 inc. VAT. (this depends on there being enough interest).
So, is anyone interested??