I dont think there are any specs on this carburetor. All i know is that it comes with a K&N style airfilter, carb, twist throttle with killswitch, matching grip, throttle cable, mine came with a choke switch for the handlebars and it came with the cable for it ( dont know if all off them have that included.) you can adjust everything.

Only one site i could find them on was http://www.zoombicycles.com/eShop/6-Parts-and-Accessories/14-Addons/108-bi-racingcarb-Addon-Racing-Carburetor-5-2.html.

Spooky Tooth had them. But i coulnt find them on there site. I purchased mine off Spooky Tooth. I didnt really like the carb. but you might.

I'll post a pic later. Well yoo can look at my bike pics.