Replika Maschinen, Inc. A high performance two and four stroke cylinder head porting and air flow facility. They also apply "Thermal Coatings" to cylinders and related components.
Debben Performance online speed shop Motorcycle performance parts online like Nitrous Oxide Systems, Vance & Hines, Wiseco, APE, MRE, Turbo , dragracing to sportsbikes like the Honda Fireblade, Suzuki Bandit, Yamaha R1
Dynojet Dynojet kit and K&N filter application list for Honda, Kawasaki, Suzuki and Yamaha
Bike Tweakers For motorcycle owners, mechanics, tweakers, and racers.
Tony Foale Designs Information on motorcycle chassis, frames, suspension, forks, aerodynamics, steering. Source for the book "Motorcycle Handling and Chassis Design" plus loads of articles and photos.
Hot Bodies Racing Yamaha, Suzuki, Kawasaki, Honda, Ducati, YZF-R1, YZF-R6, gsxr, seat cowl, undertails, racing bodywork, fiberglass.
Hell Fire Performance Nitrous Express system sales, installation and dyno tuning. HFP uses the Dynojet Model 150 inertia dynamometer to test all maks and models of motorcycles.