What does a FMF Fatty do?

The Fatty broadens and smoothes out the power curve while boosting gains throughout the entire power band, more low-end, more mid, and increased over-rev. No matter what type of riding you do, the Fatty has the benefits you’re looking for.

How much is a FMF Fatty pipe?

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What is the difference between FMF Fatty and gnarly?

Both pipes have distinctly different power characteristics. Pick your poison. The Fatty tames the stock powerband, while the Gnarly gives up top-end for a potent bottom.

Does KTM own FMF?

KTM Release: FMF KTM Factory Racing has announced its six-rider lineup for 2021, boasting a dynamic mixture of both youth and experience this season.

How much power does FMF add?

The FMF Fatty exhaust pipe breaks 44 horsepower at 7400 rpm and stays there until 9000 rpm. The FMF pipe has a 1600 rpm range above 44 horsepower. $229.99 (Fatty pipe), $129.99 (Shorty silencer). www.fmfracing.com or (310) 631-4363.

What material are FMF pipes made of?

FMF RACING FACTORY FATTY Each system features hand-pounded seams for smooth flow transitions. Material: Lighter-than-stock 20-gauge steel is used for the body of the pipe, while 19-gauge steel is used for the header portion.

How does a fatty pipe work?

The Factory Fatty pipes use a lighter gauge steel, 19-gauge for the head pipe section and 20-gauge steel for the rest of the pipe body. This allows the FMF Factory Fatty to gain better low to mid power and higher over rev compared to the standard pipe using heavier gauge steel and standard production assembly.

Do FMF pipes add power?

The module increases rear-wheel felt power by as much as 10%, while cutting down on some of the excess sound, something FMF is very concerned with. The Power Bomb, much like the Mega Bomb pipe, acts like the expansion chamber from an older two-stroke machine.

Is the KTM 125sx a Shorty or fatty pipe?

Coming out of corners (with the FMF Fatty/Shorty) the KTM 125 SX has a little more acceleration pull on corner exits and could be shifted a little earlier without falling off. The mid range pull was also longer and overall crispness of the mid range seemed improved.

How does the FMF silencer on a KTM 125 SX sound?

Once he got the FMF pipe/silencer installed he of course had to start his bike and see how it sounded and I will have to admit, it sounds pretty bad ass. The pitch of the KTM 125 SX with the FMF pipe/silencer is more of a crisp/barking sound rather than a richer/raspy sound that the stock pipe/silencer comes with.

Is the KTM 125 SX good for sea level?

Sometimes Aden will leave it in second or third gear too long (instead of shifting) and having this jetting allows the KTM 125 SX to pull a little longer. This jetting was good for sea level up to 3500ft. Anything higher than 3500 feet elevation and I would go back up to the 2nd needle position.

What’s the difference between FMF fatty and Shorty?

The FMF Fatty/Shorty seemed to lean out the bottom to mid range (in a good way) and made the KTM feel more playful around the track. RPM response was improved throughout the power and the throttle felt more connected to the rear wheel.