While in Daytona Beach for Biketoberfest, talked to Austin Weiss from Streamline Designs who explained to me that he is now the sole owner of his company and that after many battles he succeeded to have all knockoffs of his patented internal throttle removed from the market. His system doesn’t require any welding, is fitted with 6 bearings, 5 of which are radial and 1 being a needle bearing.
It is approved for road use and all the original models are engraved with “Streamline” a way for you to know that you will get from the company a lifetime warranty. Logically, Austin Weiss also markets internal brake and clutch lines and fittings. Lines are Kevlar reinforced nylon 3/16 tubing made to be routed inside the tubing of handle bars and frame. Fittings are offered in straight and 90 degrees, both with 3/8-24 thread, the Just drill your holes in your frame and route the hose. Replace the fittings that you want to have routed internally. Then route the hose through out and push to connect the end of the hose to the fitting. No ferrules to lose, no wrenching etc. Call 772-486-4996. Streamline Designs (in construction)