What started out as a cheap bike to put me on quickly spiralled into one of the most expensive and time consuming projects I've completed!

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I bought a 2006 R1200S with 107,000 miles on the clock for the princely sum of £1300 in July 2023. The initial plan was to just run it for the season, a cheap run around; or so I thought.

Browsing eBay I stumbled upon a 2020 DOHC engine from an R nine T for £1200! I had always wondered why BMW stopped manufacturing the S series before the DOHC engine was released, based on the engine used in the HP2 Sport, it only makes sense to fit one to the R1200S. But seeing as BMW never bothered I thought I'd have a go!