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Designed to be a replacement muffler with similar sound levels to stock, but with higher flow. Higher flow means more power. If you want even higher flow and more aggressive sound, take a look at the Sport Series or Performance Series mufflers from MBRP.
INSTALL INSTRUCTIONS
MBRP AT-7109 Instructions
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Installer Series: Three (3) Years warranty on Aluminized Steel
XP Series: Lifetime warranty on 409 Stainless Steel
PLM Series: Limited One (1) Year warranty
Pro Series: Lifetime warranty on 304 Stainless Steel
Black Series: One (1) Year warranty on the coating and a three (3) Years Warranty on the exhaust components
Performance Series: 1 Year warranty on Aluminized Steel
Sports Series: 1 Year Warranty
Performance Series: 1 Year Warranty
Trail Series: 2 Year Warranty
Race Series: 2 Year Warranty
The MBRP Inc. warranty applies only to defects in material & workmanship of MBRP Inc. products to the original purchaser on record, providing that installation was completed on the original vehicle for which it was designed and tested for. MBRP Inc. will not warranty the cost of removal or re-installation of this product nor does the warranty apply if the product has been damaged by accident, abuse, misuse or misapplication. The sole obligation of MBRP Inc. will be to repair or replace at its discretion.
United StatesThe install was super easy, it sounds good and it’s not much louder than original. Added this exhaust, a k&n air filter and re jet the carb and got a decent amount of extra pep out of my 300 Honda.
United StatesMy old muffler on my 97 Honda FourTrax 300 was blown out and bad. After searching for a stock muffler I finally found this one. The biggest selling point was that it was usfs certified and said it wasn’t much louder than stock. Install was fairly easy had it done in about 30-40 mins which was mostly drinking beer! Once I got it on I fired it up and to be honest it was quieter than the old blown out one. Got in time for hunting season and now my old quad sounds great!
