Stock Muffler: 18.01 GGB Mountain: 4.01Weight Savings: 14.00 lbs This muffler is a super lightweight, straight through flow design with an aggressive exhaust note. System fits securely in the stock location using stock mounts and is guaranteed to provide performance levels as good as or better than stock. GGB Advantage: Same day shipping Performance Guarantee Increased throttle response Aggressive exhaust note Huge weight savings No fuel mods Simple install Secure fit Fuel and clutching mods are not necessary prior to installation. GGB two stroke mufflers are flow benched developed for back pressure against the stock muffler and will perform efficiently in any application where the stock muffler would be used. GGB Mountain mufflers are designed to be used in areas where increased sound levels are not an issue. These mufflers are loud when you open the throttle. Please use accordingly. Sound level increase over stock (dbA) Idle + 4-6 / Under load + 10-18.
