The Mikuni TM PRO series flat slide high performance carburetors provide good improvements in flow and power output over the TM series of carburetors.  Along with the standard features of the TM series, the TM PRO series features a hand machined venturi area for higher gains in flow and velocities.  Comprehensive testing proves the TM PRO series outflows many other mass produced carburetors by a minimum of 10% or more.  Because the hand ported venturi allows higher intake velocities at lower RPM's you see superior gains in torque and this results in a smoother and wider powerband.  Available in sizes ranging from 24mm to 40mm they cover a wide variety of engine configurations.  These are essentially Mikuni TM Series carburetors that have been carefully selected, hand ported and matched, and tested for optimum performance.  These carburetors will help you extract the most power from your engine no matter the application.

The TM PRO series carburetors from Mikuni are available in 39mm and 41mm sizes.  The 39mm carburetor comes standard with a 43mm spigot OD and the 41mm carburetor is delivered standard with a 47mm spigot OD.  Looking for two-stroke carburetors?  Then check out the Mikuni TMX series!

This carburetor is suited for mild to modified motors and can be custom calibrated for immediate use. Standard jetting specifications can be found in the tables below and carburetors can also be calibrated according to your own specifications. 

Carburetors come with standard jetting, see the table below.  Custom calibrations are available for $25 per carburetor.  Carburetors can be calibrated according to your make and model or according to your own specifications.  Please specify your make and model above for custom calibrations.

Please Note: Some fine tuning may be required to attain the desired combination of performance, fuel mileage, and drivability based upon your particular environment settings.  Don't forget to specify your motorcycle modifications and riding environments.  Additional genuine Mikuni jetting parts and accessories are always available at low prices.

Keihin and Mikuni carburetors and kits are available for just about any application, from custom to OEM. Contact us for applications and availability.  Did you have a specific application?  Then check out our wide variety of pre-assembled kits that supply all the necessary components for an easy installation.

Please feel free to contact us with any additional questions or requests, we are available by direct line, IM, or email. We are available for tuning and setup questions as well as continuing product support after the sale.