Yep - got my local mechanic to replace it last week - he used a 16mm spark plug socket and cut a piece out of the side so the lead could feed through it. Once he had the tool it was a simple job and no need to go through the gear learning procedure afterwards either. Bike is much better now as, when the sensor plays up, it has knock on impact as it connects to the canbus (I believe) . Wish i'd changed it when it first started to play up a few months ago. Part cost just over £100 . First problem I've had with the bike in 5 years.