Muzzys
- Engine Kits, suspension parts, tools, and apparel.
- http://www.muzzys.com

Magnetic Drain Plug.com
- Specializing in oil drain plugs for motorcycles, cars, and trucks. Offers a magnetic design, to pull metal particles from engine oil to increase engine life.
- http://www.magneticdrainplug.com

Gasket Gasket.com
- OEM replacement engine gaskets for bottom end, top end, and carburetor applications.
- http://www.gasketgasket.com

BT-H Rexton Magnetos
- Manufacturers of self generating magneto ignition systems and components especially for vintage and classic bikes.
- http://www.bt-h.biz/

Micron Performance Exhaust
- Highly polished aluminum, and super light aerospace grade carbon fiber race canisters.
- http://micron-exhaust.com/

Translogic Systems
- Supplier of electronic transmissions for motorcycles.
- http://www.translogicuk.com/

Accurate Engineering
- Custom engine builders of V-Twin motorcycles; includes performance modifications, restorations and machining.
- http://www.accurate-engineering.com/

Quick Shifter
- Quickshifter and gear display kits for motorcycles and shifter karts. Also Motorsport Ports and technology, and dyno tuning.
- http://www.bikeshifter.com

Tucker Motorcycle Supply
- Offers motorcycle products, including piston kits, gaskets and exhaust. Located in Grapevine, Texas.
- http://www.tucmoto.com/

Perf-form Oil Filters
- Manufacturer of motorcycle oil filters.
- http://www.perf-form.com/

Quickshifter
- Allows full throttle up-shifts to improve acceleration on any motorcycle.
- http://www.quickshifter.com/

Magnom
- Unique magnetic filtration technology removes the super hard particles in oil, responsible for engine/ transmission wear. It filters ferrous debris to a finer degree than any stock oil filter and never needs replacing.
- http://www.magnom.com

Indigo Sports
- Motorcycle exhaust, parts and accessories.
- http://www.indigosports.com/

Mape
- Designs and produces crankshafts and connecting rods for 2 and 4 stroke engines, 1 or more cylinders.
- http://www.mape.it/

JP Pistons
- Manufacturers of pistons for vintage, veteran and classic motorcycles.
- http://www.jp.com.au/JPPistons.html

Falicon Crankshafts
- Specializes in the manufacture and improvement of motorcycle crankshafts and crankshaft related components.
- http://www.faliconcranks.com

Earl's
- Makers of fuel and oil lines, oil coolers and fuel caps.
- http://www.earls.co.uk/

Cometic Gasket
- Motorcycle gaskets for on and off road motorcycles.
- http://www.cometic.com/

Wiseco
- Manufacturer of high performance and racing motorcycle pistons.
- http://www.wiseco.com