| Hi Gareth,
Not sure on the price as I got a "bundled" deal with the bike etc. I'm sure that the guys would be happy to let you know though if you gve them a call 01962 877998.
I should be getting it fitted at the first service which, if the weather holds, should be next week when I get the miles on her. If you are local then I would be happy to show you the fitted product and let you have a listen? If not then perhaps I could try and record the sound for you and send you a clip by email?
Let me know
Guy | 
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