Officially it's RacersinExile (.org.uk) but the site is suspended and we haven't heard when it will open again. Suggest you look it up on a search site and see if you can find one somewhere else. Avoid ANY Chinese or Hong Kong sites as this speedo is plagued by cheap copies, stick to a European source that shows a picture of the genuine item in blue or black.
http://www.hobbywing.com/product_show.asp?id=248
Learn about the counterfeit issues here
http://www.hobbywing.com/news_show.asp?id=178
It's a great speedo, good throttle feel, easy to adjust, high quality, well priced and reliable. It just seems that the UK agency isn't all it could be at the moment. HTH
