top of page

Big Bore guys... the new Big Air PRO Series carb was made just for you!


Expanding upon the sucess of the Billetron 38, and the torque monster Billetron 38 PRO Series-

Lectron has knocked it out of the park yet again with the new 39mm, Big Bore specific, Big Air PRO Series carb


Maximize your 500cc machine's power, air & fuel delivery with the new Torque Jet circuit that has been added to the PRO Series carb  


-All the great lecton features you've grown to love are still present too

-No jetting, ever!

-No need to worry about temperature or elevation changes


The New Billetron PRO Series boasts several new features, including:


-All new Torque Jet fuel pickup - for even more instantaneous throttle response & torque

-Billet construction

-Metric hardware

-OEM throttle cable compatibility for most two stroke applications

-Shorter overall length and height

-New metering rod adjustment mechanism (1/8th turn increments)

-Bowl drain with integrated g-force kit-

-H-Style slide (aluminum now vs. Zinc previously)

-New top cover design with two screws and locating tabs

-Gasketed body halves with dowel pins vs. sealant

-New bore and bell design

-New choke design

-New float system

-New high flow, sprung needle seat valve

-New bowl material (clear, more impact resistant)

-Horizontal power jet screw that is adjustable by hand

-Relocation of carburetor vents with 4 lines


Performance Improvements

-The gnarliest bottom end hit ever produced by a Lectron Carb

-Significantly improved throttle response

-Faster power jet activation

-New slide design and metering rod location improves idle

-Finer idle adjustment (much finer threads on screw)


Easy Tuning Kit: This includes quick change billet thumbscrews for the top cover and a metering rod adjustment tool.


Special Anodizing: Alter the color of your Billetron. Color options include black, red, blue or orange (raw silver is cool too)


Laser etching: If you'd like a special logo etched into your new Lectron carb, simply add the option to your order. Once your order is placed, we will reach out to you for a logo file. Don't worry- if you don't have a logo file, we'll help you decide what to laser etch as well as which fonts to choose.


    Lectron Billetron Big Air PRO 39mm - for Big Bore Two Strokes 300cc-500cc