Dynojet Stage 1 Thunderslide Jet Kit Fits 1989-2003 Harley XL1200

Description

Dynojet jet kits are one of the most effective upgrades you can make to a carbureted motorcycle, ATV, or dirt bike. Designed to correct lean factory fuel settings and optimize air/fuel ratios, these kits unlock stronger performance throughout the entire powerband.

Benefits include:

• Noticeably quicker throttle response
• Increased horsepower and torque
• Smoother, more consistent power delivery
• Reduced hesitation and flat spots
• Cooler, more efficient engine operation
• Often improved rideability and fuel efficiency

From the factory, most carbureted engines are jetted lean which limits performance and responsiveness. Dynojet kits recalibrate the fueling to match real-world riding conditions, allowing your engine to breathe properly and deliver the power it was designed to make.

Each kit is application-specific and typically includes:

• Precision-machined Dynojet jets
• Adjustable needle(s)
• Drill bits (when required)
• Detailed, model-specific installation and tuning instructions

Dynojet kits are engineered and tested on dyno equipment to provide predictable, repeatable results with common modifications such as aftermarket exhaust systems, intake upgrades, or airbox changes.

Whether you’re looking for sharper throttle feel on the street, stronger midrange for trail riding, or improved top-end performance, a Dynojet jet kit delivers a proven, reliable tuning solution trusted by riders and race teams worldwide.