Ten degrees makes a difference when you’re fitting a 38 mm SmartCarb SC3 to a Suzuki GT750. We designed a coupler that tilts the carb upward by 10° to make room at the float bowl and give the incoming charge a straighter path into the cylinder intake.

What makes the SC3 different
The SC3 is a mechanical flat-slide carburetor that uses a single metering rod to handle fueling from idle to wide-open throttle. A clicker on top lets you adjust the rod externally, and SmartCarb uses internal float-bowl venting to help compensate for changes in air density. That combination makes the SC3 an interesting option for a GT750 build, especially if you like the idea of dialing in the mixture without swapping jets. 38 mm SC3 at SmartCarb Fuel Systems. The SmartCarb is a nice-looking piece of kit, and if you want to read up on it, here’s the manual.

Shaped for the SmartCarb and the Suzuki
The carb side of the coupler is shaped around the SC3’s distinctive cutout. The cylinder side fits over the GT750 intake spigot and works with stock or ported inlets. The 10° angle is built into the coupler itself, so the same part handles the fit at the spigot and the clearance at the bowl.




Print your own or order the full set
The $10 digital download includes the 3MF model, a personal-use license, and separate print notes. If you’d like us to do the printing, the $70 printed set includes all three adapters, one for each cylinder.
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