DYNOJET Jet Kit - Honda TRX400EX Q107

Carburetor jetting is the invisible lever that controls your TRX400EX's power delivery across the entire RPM band. A poorly jetted carb leaves horsepower on the table and creates sluggish throttle response, especially if you've modified your intake or exhaust. The DYNOJET Jet Kit Q107 gives you a fully adjustable solution to dial in the perfect air-fuel ratio for your specific setup and riding conditions—whether you're running stock components or a race-built motor.

Choose your stage based on your engine modifications and intended use. Stage 1 delivers conservative gains for minimally modified quads, while Stage 7 unleashes maximum power for dedicated race motors running at sustained high RPM. Each stage is engineered to improve both peak output and rideability across your powerband.

• Stage 1: ~5% power increase
• Stage 2: ~8% power increase
• Stage 3: ~10-15% power increase
• Stage 7: Race-only, maximum output
• Fully adjustable jetting
• Improves power and drivability
• Stage 3+ may affect street rideability
• Bolt-on installation
• Fits Honda TRX400EX
• MPN: Q107