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FMF Factory-4.1 Silencer With SS Mid-Pipe
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FMF Factory-4.1 Silencer With SS Mid-Pipe
Our price: $359.99 – $404.99
MSRP: $399.99 - $449.99 - You save up to $45.00 (10% off)
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- FMF not only focuses on building a hi-performance race silencer, FMF also focuses on low sound levels and value in performance. With the FMF Factory 4.1 silencer with SS Mid-Pipe you will get the quality of performance you are looking for and a great looking setup on you machine. The FMF Factory 4.1 silencer with SS Mid-Pipe is easy to install and will make you ready for the racing season. FMF has 30 years of racing experience behind them making FMF exhaust one of the top leading developers in that USA. FMF Factory 4.1 Silencer with SS Mid-Pipe is also stamped with AMA approval for meeting their sound requirements on most motorcycle models.
- Features Factory-4.1 Silencer with SS Mid-Pipe and Stainless Steel Mid-Pipe.
- Based on the Factory-4.1 full system, the uniquely shaped end cap and angle cut oval canister moves the muffler closer to the center of the bike.
- Newly designed hi-flo end cap is modular for tuning the power with optional rev tubes or installing a spark arrestor module.
FMF Factory-4.1 Silencer With SS Mid-Pipe Reviews
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Each review submitted enters you into a $100 gift card monthly drawing, and a $500 gift card quarterly drawing!
0 of 0 people found this review helpful.
super Awesome Product
JOHN in CA – Machine this part was bought for: 2010 POLARIS OUTLAW 525 S
Comments On Dec 12, 2012:Awesome Product
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0 of 0 people found this review helpful.
Amazing sound
Robert in VA
Comments On Sep 23, 2012:It sounds amazing. it wasnt hard to instal,l very easy fit. It slipped right on, few screws, came with the nessicary spacers to make it fit just right. The sound is great, definity a good buy. Added power, will definity continue buying FMF parts. Thanks Rocky mountain ATV!
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0 of 0 people found this review helpful.
Loud!
Robert in MI
Comments On May 30, 2012:Nice pipe, nice sound. Very loud but never ticketed or questioned.
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0 of 0 people found this review helpful.
Great set up
Lorenzo in AZ
Comments On Apr 24, 2012:Super easy to install. Doesn't come with the lube stuff, but I put it on there with out it and it's been working great.
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0 of 0 people found this review helpful.
Added power and great sound
michael in WA
Comments On Mar 19, 2012:Love how easy to install, and sounds awesome!
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1 of 1 people found this review helpful.
Thank you ROCKY MOUNTAIN MC!
Casey in UT
Comments On Apr 28, 2011:Ive left all kinds of reviews on here trying to win the gift certificate to rocky mountain atv, Not only did I win, I won the quarterly drawing for $500.00 Gift card!! Super stoked and used it to buy this Exaust and a ti megabomb header for my 2010 crf 450. Excellent Fit and finish, and big gains in bottom and top end pull.... THANK YOU Rocky Mountain MC!!!!
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0 of 0 people found this review helpful.
sweet mid pipe and silencer kit
JEREMY in ME
Comments On Mar 09, 2011:everything fit great improved mid range and top end power.sound is different than most.
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0 of 0 people found this review helpful.
Great power boost with Megabomb, but now too loud
Mike in CO
Comments On Aug 31, 2010:Colorado just passed legislation that bikes need to be less than 96 db. I'm not thinking this will pass a sound check on my WR250F with a Megabomb (which should quiet it down about 1.5 db supposedly). The extra power is astounding - it will be very hard to give up this pipe if I have to. Excellent build quality and durability. I don't have a bad thing to say about it, except too loud, which is how FMF designed it and that was fine with me when I bought it in 2007 as there was no noise about sound being an issue and I used to ride in the middle of nowhere, many miles from the nearest person. I may have to trade it for an FMF Q4, or other.
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2 of 2 people found this review helpful.
FMF 4.1 Factory Exhaust - 2008 YZ250F
Miguel in CA
Comments On Nov 23, 2009:I purchased my FMF 4.1 pipe last week and put it on my bike. I rode at Ocotillo Wells and I felt an increase in power throughout the power band. The throttle is more responsive. Front end comes up quicker and easier. The bike sounds great too. I will be purchasing a power bomb header soon and I will re-jet the bike when I have purchased the new header (felt solid with the stock jetting). Sweet muffler!
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1 of 1 people found this review helpful.
The way to go
Owen in WV
Comments On Jun 15, 2009:16 year old boy races YZ250F. Bought the pipe 2 years ago. Notable power increase. Fit well and have not had a lick of trouble. New packing easy to install. Sounds great and looks good too !
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Instructional
How To Repack A Silencer For Your ATV Or Motorcycle
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