I have been speaking with Derren and Tony The New Owners of Gibson exhausts (For those who dont know Pete Gibson Used to make Allspeeds) they are a top bunch of blokes! anyway heres a copy of the email they sent me in regards to nsr pipes!

We have some patterns for the early RS250 race bikes which as far as we know
are the same layout as the NSR's. Pete has done some in the past for a
couple of owners. The patterns are Honda UK spec and he did them when Steve
Hislop was riding for them.

We would need a bike to make them, but it is possible. Price wise about #500
a set, could be a bit cheaper if we do a few. They would be fully hydro
formed pipes with detachable cans.


Thanks

Tony

As well as pipe building they also sell 2stroke spares, oil and other stuff and have a good dyno machine they two are genuine 2stroke fanatics if anyone wants there number give me a shout! (they are based in Romford!)

I know where they got those patterns...

Portgrinder has the same patterns Mike. He's also got some port info in the '93 RS250.

J