The performance part known as the "boost bottle" is now available for purchase. They are designed to alleviate pressure on the carburetor as well as boost efficiency, acceleration, and high-end performance. These parts are constructed of high quality copper tubing and each have to pass a rigorous quality control inspection. The cost of each bottle will be $19.95 + shipping. When ordering call 301 404 5456 or 301 564 5146 or email us at Barrybunny@aol.com. Please specify color (black/silver) and engine displacement (cc). If you have questions contact us at one of the above #. Discounts are available for purchases of 5 or more. We accept pay pall, money orders and cash. Thanks a lot and good riding.