Setting the standard for power and value, the HMF Performance Series has been track tested with over a decade of championships. The specially designed, unrestricted core provides maximum flow and allows the exhaust to increase horse power and torque evenly throughout the entire power curve. The trademark to the HMF Performance Series is the exhaust's sound. With a deep, aggressive sound, you'll typically see a 2 - 10 dB increase from the stock exhaust system.
Powersports elliptical slip-on.
Designed for 4-stroke sport quads.
T-6061 aerospace-grade aluminum canisters.
TIG welded aluminum brackets.
Heavy-duty stainless steel rivets.
Two-piece billet end caps that accept a U.S.F.S.-approved spark arrestor (included) and the exclusive HMF quick-change low dB Quiet Core (sold separately).
Packed with Bristol Core brand pillow packing.
Sold as a kit.
Includes installation instructions.
Two-year manufacturer's warranty.
Manufactured in the U.S.A.
Note: HMF Exhausts are designed for closed course competition only.
Equal Power: The Performance Series distributes power evenly throughout the entire RPM range.
2 - 10 dB Increase: Depending on the model, you can expect a 2 - 10 dB increase over stock.
Unrestricted Core: The Performance Series uses a 2-1/8" non-restrictive core for maximum flow.
Less Weight: The exhaust shell is made of T6061 Aluminum that weighs substantially less than stock.
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Q: Where can i find a recomended jetting for an HMF slip-on exhaust on a trx450er?
Over 8 years ago
My family has ordered from your site a few times and never once been disapointed, but i would like to ask where i could find a recomended jetting for the HMF sport slip on for my trx 450er. I can jet it myself but it would make things alot easier if i knew where to start. Ive asked HMF but they still havent responded. If you have any info it would be much appreciated.