FUEL MANAGEMENT SYSTEMS Whether you run a standard motorcycle or a tuned superbike

FUEL MANAGEMENT SYSTEMS Whether you run a standard motorcycle or a tuned superbike, K&N Intake Performance Kits can provide you with a simple and affordable solution to all your carburetion problems. K&N Intake Performance Kits increase power and smoothness throughout the entire rev range, while maintaining optimum fuel economy. Each kit is put together with full and comprehensive instructions, which show step by step installation and testing procedures to ensure a perfect set-up every time. This is backed by toll-free telephone technical support for K&N customers. Kit installation and and dynamometer testing services are available in many parts of the country.
	STAGE ONE KITS Intended for motorcycles with a stock engine using the stock airbox, K&N air filter and stock pipe. Stage 1 kits are fully adjustable to allow the use of well designed aftermarket pipes and K&N stock replacement air filters. Stage 1 kits are designed to improve throttle response and driveability and in most cases power increases of approximately 5% throughout the entire power range can be achieved.
	STAGE TWO KITS Intended for motorcycles with a stock or mildly tuned engine using a well designed aftermarket pipe with a modified airbox and a K&N stock replacement air filter. Stage 2 kits are designed for applications where individual air filters cannot be installed and for applications where airbox modification improves the engine's performance. In most cases power increases of approximately 8% can be achieved.
	STAGE THREE KITS Intended for motorcycles with stock or mildly tuned engines using K&N individual clamp-on air filters and an aftermarket pipe. In most cases power increases of 10 - 15 % can be achieved. However driveability may be compromised particularly with short stroke, high rpm engines. On some modern engine and airbox designs, individual filters and proper jetting offer no performance improvement yet compromise driveability, in such cases Stage 3 kits are not available.
	STAGE SEVEN KITS Intended for race only use or special applications, like the Yamaha V Max complete induction kit. Stage 7 kits are designed to optimize jetting for a given tuning specification or racing condition.

These Power Kits are legal ONLY for racing vehicles. Not applicable, nor intended for use on emission controlled street or highway vehicles. These Power Kits are not applicable, nor intended for use on aircraft.

MAIN JET

K&N develops its' main jets to correctly serve two functions; Static load and Dynamic load. The static load is the fuel recieved through the main jet in the upper gears, where the tachometer is moving very slow. The dynamic fueling portion of the main jet is the amount of fuel recieved in the mid-range portion of the power. For example, you have a GSXR1100 G with #130 main jets. You install #125 mains. After running the bike you notice the top end has improved but the mid-range doesn't pull as well. You then install #135 and you can tell the mid-range is great but the top end is slower. This is a common compromise when using the stock main jets and needles. When you install K&N #130 mains, you will get the good mid-range power of the #135 and the good top end of the #125. This is because the K&N main has a venturi design more consistent to the engine's needs.

MAIN AIR JET
This jet allows air into the emulsion tube to mix with fuel being drawn up from the float bowl. It controls the amount of fuel which can be pulled from the float bowl into the venturi. The larger the size of the main air jet, the more air you get and the less fuel. The smaller the main air jet, the more fuel you get and the less air. K&N alters this only to achieve the flattest possible fuel delivery curve.

NEEDLE JET (Emulsion Tube)/Needle Cap
Many newer bikes have very flat power and fuel delivery curves when used with stock exhaust and air-box. When aftermarket pipes are used, the power curve is usually not flat. You usually need to lean out for low speed and richen up for top end, or leaner on the top end and richer at low speed. In order to achieve full function and drivability, K&N uses shrouds or cap style nozzles for adjusting the upper or lower top end. These also have an effect similar to fuel injection by breaking up the fuel as it enters the air-stream.

FUEL NEEDLE
The design of the needle is where most of the R&D time is spent. The needle is designed to give the correct amount of fuel throughout the mid-range and is also designed to allow adjustments from groove 1 to groove 6 with little or no effect below 3000 rpm. With the correct end dimensions, the needle will have little effect on the main jet regardless of needle position. This isolates all circuits from each other and ensures easy set-up of the mid-range and driveability.

PILOT CIRCUIT
This controls 100% of the engine idle and 25% of the transition onto the needle. K&N has found that the engine will idle with the standard pilot jet, with or without the air-box and with the slides and needles removed from the carburetors, therefore K&N rarely changes the pilot jet. Changing the pilot jet is proof that you are not using the other circuits correctly. Idle and off idle is controlled by the mixture screws and the float level which has the most positive effect below 4000 rpm. On some models the pilot air jet is changed to provide optimum fuel economy. Correct balancing of the carburetors also ensures a smooth idle.

ATV Power Kits
K&NÕs ATV POWER KITS are a premier combination of a carburetor recalibration kit, K&N FILTERCHARGER air filter, K&N PRECHARGER pre-filter and a K&N RECHARGER service kit. Designed to fit THE MOST POPULAR ATV vehicles, the ATV POWER KITS incorporate the latest technology in carburetor jet kit art, delivering a superior level of performance found only in expensive racing ATV's. Each ATV POWER KIT will deliver an average of 15% increase in horsepower, improve throttle response, yet, maintain optimum fuel economy. YOU CAN FEEL THE POWER IN THE AIR.

Each ATV POWER KIT contains all you need: 1. Complete recalibration jet kit, including jets, needle, spring, shims and detailed instructions. 2. K&N Filtercharger air filter 3. K&N Precharger pre-filter. 4. K&N Recharger service kit. K&N's ATV POWER KITS are a simple cost effective solution for all your performance riding needs, (horsepower, torque, altitude, speed and just plain fun). They are EASY to install, EASY to adjust, compatible with aftermarket exhaust systems and EASY to enjoy.

K&N ATV POWER KITS include an authorized dyno chart pointing out the increase you can expect.

Each ATV POWER KIT comes with the correct K&N replacement air filter for your ATV. K&N replacement air filters increase airflow and power. They are washable and reusable and last for many years of efficient service. Check our latest catalog for the exact part number to fit your make, model and year. K&N PRECHARGERS easily slip over the K&N air filter, and were developed to extend the service life of your K&N FILTERCHARGER.

K&N PRECHARGERS work best in sandy, dirty, dusty, muddy miserable conditions. Constructed of slick, durable fine weave polyester material, the dirt just seems to slide right off the filter. K&N PRECHARGERS are easy to service, just soap and water, no messy oils.

Recharger¨ Filter Care Service Kit (squeeze) Same as 99-5000 except has squeeze oil bottle instead of spray can.

Includes: 8 oz. Squeeze Oil, 12 oz. Filter Cleaner and Service Decal.................................................... #99-5050

(CA) - Fits California models only. (HA) - For use in high altitudes above 4500 feet elevation

For installation help call K&N - (909)684-9742 or DYNOJET (406)388-4993