Sprocket Dimensions:
Mounting Tyres to Carbon Rims
BST engineering department guides you through the installation process and shows you how easy it is to install tyres on the BST Carbon Fiber lightweight rims.
For best result, we recommend the use of AGS Ru-Glyde Lubricant which will protect beads against scuffing during mounting—assure proper bead seating on rim and protect against tire slippage after mounting.
Optional Anti-Slip Coating
To help reduce tire slip during drag-strip launches, all BST wheels 6.25″ and wider come standard with BST’s exclusive Ultra-High-Speed (UHS) Coating technology (item# 160290), a mixture of chemical adhesive and abrasives which create a sandpaper-like surface to reduce tire slippage on the rim. This process, used successfully in MotoGP racing since 2005, was developed to combat front-tire slippage during hard braking. UHS can be added to any size rim, front or rear.
Worldwide Bearings
Worldwide Bearings are an optional extra. For optimum performance, we recommend upgrading to WWB ceramic bearings.
Sprocket Measurements as follows.
5 (10mm holes) with a PCD (Pitch Circle Diameter) of 100mm and a sprocket ID of 76mm.
Replaceable Hubs
The hubs are attached to the wheels using a unique fastening system that combines high-tech aerospace fasteners, mechanical locking mechanisms and super-high-strength aerospace adhesive. In the event of rim damage the hub can typically be salvaged and the carbon rim replaced at a substantial savings over purchasing a new wheel. (Except on BST wheels with forged carbon hubs)
90-Degree Valve Stems
All BST wheels come with aluminum 90-degree valve stems that are not only easy to access, but keep centrifugal force from opening their Schrader valves and deflating tires during high-speed operation. Track tested up to 274 mph.
Testing
BST products have undergone decades of research, development, testing and the most stringent certifications processes. They’ve been flogged at Rim Technology, Eurotype Test Centre and have passed all lab and street tests for certification from Germany’s TüV to the U.S. Department of Transportation, with flying colors.
BST wheels have been proven internationally at every level of roadrace and drag race competition, winning many championship titles around the world.