Installing a jet kit in your carb is the best way to get the maximum performance and longest life out of your bike. The stock carburetor from the factory is designed to meet Import Regulations ... not peak performance. Once you install or modify an exhaust or intake, you have put your bike into a leaner condition that will eventually destroy your engine due to heat from running lean. If you notice any popping, you are extremely lean. Our jet kit provides the parts and installation instructions to enrich all the circuits in the carb, to fix this problem, and add performance you can feel in the seat. This is not just some main jets in a box, it is a comprehensive jet kit, addressing all throttle positions, throttle response, and each kit is custom made to your bike and its modifications. Replacing just the jets does not address 1/4-3/4 throttle, or throttle response, only full throttle. This Kit is for all throttle positions, and throttle response. Kit Includes Main Jets Needle Adjusters Nylon Spacers Slide Spring Modification Drill Bits for Slide Hole Modification (faster throttle response, for CV carbs) Idle Mixture Mod Tuning Tech Bike Specs Carb Schematic Carb Synchronizer Tool (how to build for $5) Step by step instructions with photos customized to your bike. Installation Support - If you need assistance with installation or have a question we are there for you. Benefits More Peak Horse Power Designed to gain about 8%-10% in HP with intake/exhaust, 3-4% on bone stock. Longer Engine Life The jet kit is a performance upgrade that not only increases power, but allows the engine to run cooler which increases engine component life. Increased Performance Designed to improve all RPM ranges of performance and throttle response. Lower EGT's (exhaust gas temperatures) If you have installed an aftermarket, or modified the stock exhaust or intake, this is needed or you will damage your engine. Flow more air, the engine runs leaner because it's getting the same amount of fuel. Running lean causes detonation and hotter EGT's which ruin exhaust valves and destroy engines. ____________________________________________________________________________________________________________________________________ We MUST have the following information to design ship your Custom 6 Sigma Jet Kit Year Exact Model Modifications (engine, exhaust, intake, filter type etc . . .) Riding Elevation (height above sea level, and any extreme conditions) Please provide this information in the NOTES TO SELLER section after check out or in email or through messages. Installation The kit comes with complete instructions for installation. It is easy, just take it slow and pay attention. It is a straight forward process, and we offer full support, instructions, and a complete carb schematic. Only basic hand tools are required. Fair and Honest Guarantee Our goal is to provide a quality upgrade for your bike at a reasonable cost. If you receive your kit and have questions please contact us and we will do what it takes to ensure your satisfaction. We have worked very hard to keep our overhead low and practice Lean Manufacturing concepts, and are able to pass along those savings to our customers. FAQ'S Q: Is this kit for all (1,2,3,4,6) carbs on my bike? A: Yes, 1 Kit is for all the carbs on the bike. You only need to order 1 Kit for your bike. Q: Do you ship international, and how much? A: Yes, we ship worldwide, for $16. Q: What size jets come in this kit? A: Each kit is different, based on the bike, modifications, and operating altitude, so jet sizes vary. Q: What Stage (1-7) is this kit? A: Each kit is different, based on the bike, modifications, and operating altitude, so the Stage varies. Q: Do I need a jet kit? A: If you have made any modifications, or just want a little more performance out of your stock bike, then yes you do need a kit. Q: Can I install this kit? A: Yes, you can install it, don't be intimidated if you've never done this before, only very basic skills are needed, and it has instructions with full support. Q: How long does it take to install? A: Time varies, but it is directly related to the # of carbs on your bike. Allow at least 1/2 hour per carb. Q: Does this kit come with everything I need? A: Yes, it is a comprehensive performance upgrade kit. Not to be confused with a basic rebuild kit. Q: I just bought an intake/exhaust, why do I need this? A:Why spend $300 to $700 for an exhaust and air filter that produce a 10% increase in air flow while ignoring the big loss of horsepower due to not installing a comparatively inexpensive jet kit that increases the fuel flow to match.