DYNOJET Jet Kit - Yamaha XV750 4128

Carburetor jetting is the foundation of engine performance, and stock jets rarely match modified intake, exhaust, or engine configurations. The DYNOJET Jet Kit for your Yamaha XV750 delivers precise fuel mapping across the RPM range, eliminating lean-running conditions that rob power and damage engines while improving throttle response and rideability. With seven progressive stages from mild street tuning to race-only setups, you get the flexibility to match your current modifications—or plan ahead as your build evolves.

This fully adjustable kit lets you dial in the perfect air-fuel ratio for your specific combination of engine work, filters, and exhaust. Whether you're looking for a modest 5% improvement with bolt-on parts or targeting 10-15% gains with a fully modified engine, DYNOJET's stage-by-stage approach eliminates guesswork and delivers repeatable results.

• Manufacturer: DYNOJET
• MPN: 4128
• Application: Yamaha XV750
• Stage 1: 5% power increase
• Stage 2: 8% power increase
• Stage 3: 10-15% power increase
• Stage 7: Race-only configuration
• Fitment: Vehicle-specific
• Installation: Bolt-on replacement
• Adjustment: Fully tunable
• Benefits: Improved drivability, optimized power delivery