Unlock the full potential of your Suzuki DR-Z400S (2000-2025) with this custom carburetor jet kit. If you've added an aftermarket exhaust, opened the airbox, or done the 3x3 airbox mod, your bike is now running lean from the factory settings. Running lean causes popping on deceleration, less power, and can even damage your engine from excess heat.
This comprehensive kit doesn't just give you bigger main jets. It includes everything to re-jet all circuits: main jets, needle adjusters, nylon spacers, and even drill bits for modifying the slide and idle mixture. Comes with detailed, bike-specific instructions and a carb schematic.
Properly jetting your carb smooths out throttle response, adds power across the entire RPM range, eliminates lean popping, and helps your engine run cooler and last longer. A must-do mod for any DR-Z with intake or exhaust changes. Basic mechanical skill required, but the instructions make it doable. Feel the difference in performance immediately!