Motorcycles 
1. 1st5ive
Free information portal and online community for Harley-Davidson owners, riders, and enthusiasts.
http://www.1st5ive.com/
Offers factory direct pricing and sales of Kawasaki ATV's.
http://www.kawasakiatv.org/
3. CBR Forum
A Honda CBR community. Discuss all aspects of the CBR motorcycle, from the very old to the brand new, all members are welcome.
http://www.cbrforum.com/
Detailed guide on mini choppers and how to customise your mini chopper by building your own with a chopper kit.
http://www.choppers-guide.com/
Latest race mini motos, mini quads, and origami minimoto in stock.
http://www.daudbikes.com/
Charts the history of the Harley Davidson company from 1903 to 2005. Contains links to other fan sites and clubs.
http://www.harley-davidson-motorcycles.ws/
7. HDForums.com
Harley Davidson discussion forum and club for Harley owners and enthusiasts.
http://www.hdforums.com/
A Kawasaki discussion forum and one stop resource for all Kawasaki motorcycles, ATV's, and Jet ski's. Topics and photos include Kawasaki motorcycle maintenance, tech help for motorcycle repairs, and performance upgrades.
http://www.kawasakiforums.com/
9. MiniMoto
Mini motorbikes information for the UK, with info, news, reviews, FAQs and a dealer list.
http://www.neooptic.com/minimoto/
10. RiderInfo.com
Rider info motorcycle club where motorcycle riders around the world discuss rallies and maintenance. Includes news and information on most major motorcycle brands.
http://www.riderinfo.com/
11. Suzuki Forum
Forum and club for Suzuki Motorcycle enthusiasts. Topics include: general motorcycle tech, sportbikes, cruisers, motorcross, touring, standard, dual sport, offroad, and others.
http://www.suzukiforum.com/
Specializes in aftermarket V-max parts and accessories from Europe, Japan, and USA.
http://www.v-maxparts.com/