Chuashun Bicycle Parts
Manufacturer of bicycle frames, front forks, suspension series frames and suspension front forks.
http://www.chuanshun.com

Oswald Cycle Works
Oswald Cycle Works, custom steel bicycle frames handcrafted by Tom Oswald
http://oswaldcycleworks.com

Orbea USA
Import bicycle frames from Spain. Offer both road and mountain frames along with complete road bikes.
http://www.orbea-usa.com

Burls
Builds lightweight steel custom bicycle frames. Specializing in fillet brazed frames for time trial, road race, mountain bike, women specific geometry and fixed wheel conversions. UK.
http://www.burls.co.uk/

Scapin Bike
Develops and produces high-tech frames for bicycle competition: hi-tech ultra-light frames for road and off road cycing, available in all requested sizes.
http://www.scapin.com/

Tiemeyer Cycles, Inc.
Custom Bicycle Frames for Track, Time Trial, Triathlon, and Road. Hand crafted by David Tiemeyer, builder of olympic and world championship winning bicycle frames.
http://www.tiemeyercycles.com/

Serotta
Manufacturer of road bicycle frames.
http://serotta.com/

Kappa Bicycle
Kappa BMX
http://www.kappabmx.com

Kirk Frameworks
Makes handcrafted steel bicycle frames and accessories. USA.
http://www.kirkframeworks.com

Privateer Bicycles
Manufacturer of custom road and mountain bicycle frames. USA.
http://www.privateerbicycles.com