DF110 GK Jet Kit Includes DF110 GK Main Jets DF110 GK Pilot Jet DF110 GK Needle Adjusters Nylon Needle Spacers Slide Spring Modification Drill Bits for Slide Hole Modification Idle Screw Modification Air Box Modification Exhaust Modification Engine Tuning Tech Carb Schematic Carb Synchronizer Tool (how to build for $5) Instructions with photos for ease of installation. Installation Technical Support - If you need assistance we are there for you. GET MAXIMUM PERFORMANCE LONGER ENGINE LIFE EVERY Kit Custom Engineered EVERY Time The Only Custom Made Jet Kit Designed to your Specs, put together by a Real Human in the USA. EXHAUST POPPING? FEELS SLUGGISH? These are signs of a LEAN ENGINE, a Jet Kit will fix those issues. BENEFITS MORE HORSE POWER Designed to gain a safe 8%-10% in HP with intake/exhaust, 3-4% on bone stock. MORE TORQUE By addressing 1/4 throttle, you will feel more power down low, meaning less shifting to a lower gear, and getting off the line. LONGER ENGINE LIFE 6SIGMA JET KIT is a performance upgrade that not only increases power, but allows the engine to run cooler and at optimum, which increases engine component life. INCREASED PERFORMANCE Designed to improve all RPM ranges of performance and a quicker throttle response, helps remove the bog. MADE IN USA