| Bike Tweakers | | For motorcycle owners, mechanics, tweakers, and racers. |
| 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 |
| 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. |
| High Performance Tuning | | Engine builder and tuner George Grabowski's machine shop service and two stroke tuning school. Articles, advice, contact information and customer recommendations. |
| Hot Bodies Racing | | Yamaha, Suzuki, Kawasaki, Honda, Ducati, YZF-R1, YZF-R6, gsxr, seat cowl, undertails, racing bodywork, fiberglass. |
| MR.TURBO | | If you want a kick in the pants from your bike, run a turbo. |
| Nitrous Express | | Nitrous Oxide systems, parts, sales and service. Location and contact information available. |
| 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. |
| 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. |
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