Precision Billet Vintage Derailleurs and Bicycle Components. We produce some of the finest examples of bicycle parts in that vintage and retro style. Our rear derailleur is all billet, precision engineered, anodized in house. Weighing in at a super light 153 grams this is one of the lightest derailleurs in the world. We manufacture seat post clamps, aluminum and titanium bolts, brake levers, brake systems and many other hard to find parts. All our cnc items come in a wide variety of colors and custom requests are welcome. Feel free to contact Precision Billet in Toronto for all your racing needs.