Extra chains. Read this thread from about mid-page 6 to page 7--the writer's friend flew in to S. Africa to meet the writer, bought a Chinese-made Bashan 229cc bike, and they rode for over 6000 miles, with the only issue on the Chinese bike being a chain that stretched beyond usefulness and they could not find a replacement on the route they were on. INteresting read otherwise, and might be relevant (cannot remember if he entered Zambia, but he has gone EVERYWHERE, so you might want to read through his threads), but if I was to go to Africa and buy Chinese bikes, I will now remember to carry extra chains!

http://www.horizonsunlimited.com/hub...fboard-72401-6