ORIGINAL MAGNUM TWIST-AIR * FITS TO THOSE MODELS HAVING THE PARTICULAR INTAKE DIAMETER SPECIFIED IN TITLE. PLS CHECK INTERNAL DIAMETER PRIOR TO PURCHASE! Twist-Air spiral installs within the air filter box or intake very easy in 15 minutes or less. Precision spiral shaped geometry optimizes & accelerates airflow throughout intake system. More and regulated air means more usable power and acceleration throughout the RPM range. Twist-Air concept had been developed to improve low- & mid-range power, torque and fuel efficiency. Air volume increase and vortex-like air action results turbulent air plus more aggressive combustion in the chambers. Twist-Air gives you more useable performance by up to 5% & magnificent throttle response, reduces air restriction and increases engine horsepower. Special spiral shaped geometry optimizes and spin up the incoming air charge. This in return gives you tremendous combustion efficiency. More air charge, more power. It provides an improvement in both power and economy. The kit supplied comes with all stuff required for installation. * * * HIGH NOTE * * * THIS ATV COLD INTAKE SPIRAL IS ATV AND INTAKE DIAMETER SPECIFIC. PLEASE MEASURE THE INTERNAL DIAMETER OF THE CURRENT ATV BEFORE PURCHASE. After installation of Magnum Twist-Air your quad's acceleration will become to crisp, HP and torque data will be upgraded. Since engine can "inhale" free and it can aspirate the fresh oxygen rapidly, you will feel an explosive power kick within full RPM range. The special and unique Twist-Air causes a spinning action of the incoming air-charge as it passes through the intake tract. This extremely beneficial air-charge carries all the way into the combustion chamber, producing a super-atomized mixture, which produces incredible gains in low range power, mid-range power and overall efficiency. This is the key factor to the horsepower success behind each Magnum Twist-Air intake system. Magnum Upgrades are made in Europe & covered by 10-YEAR WARRANTY.