US MX 21 K2
Designed for Motocross outdoor PRO 4-stroke engines and Supercross indoor running at high rpm, US MX 21 K2 Unleaded Racing Fuel provides excellent vapor lock protection, and high combustion speed and energy — giving stronger acceleration during throttle transitions. The high quality components and multifunctional additives provide carburetor and fuel injector detergency and valve cleanliness.