Put this in your expansion chamber and smoke it: KTM (and brand-family sibling Husqvarna) has loaded its two-stroke SX model lineup with proper Electronic Fuel Injection (EFI); Not, Transfer Port ...

The main change of KTM’s flagship cross-country two-stroke model for 2020 is listed in the name—TPI, which stands for transfer port injection. This technology makes premixing fuel and jetting ...