DYNOJET Jet Kit - Suzuki DRZ400S 3109

Carburetor tuning is critical for extracting maximum performance from your DRZ400S, especially if you've upgraded your air intake or exhaust system. Stock jetting leaves significant power on the table and can cause hesitation or bogging under load. The DYNOJET Jet Kit delivers precision fuel mapping across your engine's entire RPM range, restoring throttle response and unlocking 5–15% additional horsepower depending on your modifications and intended use.

DYNOJET's fully adjustable design means you're not locked into a one-size-fits-all solution. Whether you're running a mildly modified street bike or a race-prepped machine, you can dial in the exact fuel curve your engine demands. This kit transforms carburetor tuning from guesswork into science.

• Stage 1: Stock setup, ~5% gain
• Stage 2: Mild mods, ~8% gain
• Stage 3: Modified filters, ~10–15% gain
• Stage 7: Race-only tune, high RPM
• Fitment: Suzuki DRZ400S specific
• Installation: Bolt-on carburetor kit
• Adjustment: Fully adjustable needles
• Drivability: Improves response, street-suitable stages
• MPN: 3109