Bike accessories advice: Boring out your Africa Twin

MCN expert Chris Dabbs is here to answer any questions you have on anything bike related.

If you have any questions, ask an expert here

Q. I want to fit a big-bore kit to my Honda Africa Twin. Have you got any leads I could follow up?
John Saunders, e-mail
 
A. Apparently www.africanqueens.de do an 840cc kit, but they seem to be out of stock permanently. However, if you take a look at http://www.advrider.com/forums/ some owners in the States have worked out that Wiseco 696cc kit for the Bros/Hawk fit with a 1mm overbore.

You do have to machine the skirts to clear the flywheels because of the longer stroke. This only gives a small increase in capacity 765cc but about 10.5:1 compression ratio. If you pair it with flowed heads and get the jetting set up correctly it should go from from 48bhp to 56bhp, a useful increase.