Free 3-Day Express Shipping on Orders Over $99*

Shopping for Parts? Select Your Bike: Shopping For: 1997 Suzuki RM250 Manage Saved Bikes Dirt Bike Dirt Bike Sport ATV Utility ATV Sportbike Cruiser Suzuki 1997 RM250

Earn $10 Free FAST CASH with purchase

1997 Suzuki RM250

FMF Fatty Pipe - 2-Stroke

Retail: $249.99
$219.99
You Save: $30.00 (12%)
Free 3-day express shipping
This item qualifies for free shipping Shipping Info

Please choose an available item.

In Stock - Ships Tomorrow!
FITS: 1997 Suzuki RM250 change
 
It appears you may have cookies turned off in your web browser, or are using a browser that does not support cookies. You must accept cookies to use our site. For questions call us at 1-888-676-8853.
FMF Fatty Pipe - 2-Stroke

Product Description

With well over 35 years of racing experience behind it, the Fatty pipe delivers race-proven performance. 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.

  • More tractable power, improved throttle control.
  • Provides power gains throughout entire power band.
  • Carbon steel with a nickel-plated finish for maximum durability.
  • FMF Racing's Tru-Flo stamping process ensures a perfect fit and optimum performance.
  • Can be used with FMF or stock silencer.
  • FMF's most popular 2-stroke pipe .

Note: Pipe may include factory indentations for proper installation clearance.

  • Customer Reviews
  • Ask an Expert
  • Also Offered For
(73)
4.8 out of 5 stars
5 star   61
4 star   10
3 star 0
2 star   1
1 star   1
Kelly Location: Brentwood, CA
1-10 of 73
Overall
Durability
Ease of Installation
Performance
Power
Style
Top 100 Contributor Top 250 Contributor
Best 125 pipe out there!!!

Instant power gains and sounds amazing in the high revs, just buy it you wont regret it.

Overall
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: Brentwood, CA
Fatty Pipe

Works great, looks great!

Overall
Durability
Ease of Installation
Performance
Power
Style
Location: Chico, CA, USA
Great Product

Helped broaden the power band and bring the extra power I needed

Overall
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: South Bend, IN, USA
Great Bolt on HorsePower..

Great bolt on horsepower for the 2012 ktm 125 took the lowend bog away that most 125s have..Made the throttle responce alot better without rejetting or changing anything but the pipe... add the shorty silencer and WOW..WHAT A DIFFERANCE....

Great Bolt on horsePower!!!!!!!
Overall
Durability
Ease of Installation
Performance
Power
Style
Top 1000 Contributor Top 250 Contributor
Location: South Bay, CA
Great pipe

installed on a 2000 YZ125 First off, this pipe makes the power band much broader! I am very happy with this addition. I also added the Vforce3 reed block at the same time, so I would say these are two complementary add ons. I used the jetting specs that came with the pipe and I'm loving the broadened power band and crisp throttle response. I already had an FMF turbine core silencer, so I just repacked it before installing the pipe. The install was very easy, and the pipe comes with orings already installed. I purchased the oring kit with springs just in case, but only used the springs so my old ones could be retired. I was however, un happy with how the pipe arrived. There were some stains on the outside (pictured) that I would hope an expensive part like this would be free of before shipping. I cleaned most of it off, but signs still remained. I noted that the durability is not high because the pipe is larger than stock, and an expansion chamber is very vulnerable anyway, and can be beat up easier. Due to the larger pipe size, I also moved the kick starter back a few teeth to maintain clearance.

one of the stains
Overall
Durability
Ease of Installation
Performance
Power
Style
Top 500 Contributor Top 1000 Contributor Verified Purchaser Top 250 Contributor
Location: Boise, ID, USA
Great Product

This pipe looks awesome sounds amazing and preforms even better!!! no qualms about this purchase from me!!! FMF Rocks!!!

FMF Fatty Pipe - 2-Stroke
Overall
Durability
Ease of Installation
Performance
Power
Style
Best two stroke pipe

I have the FMF Fatty and powercore 2 silencer on my 1999 yz 125 and it is definetly the best pipe yet. I used to have a pro circuit but it would dent so easily and eventually it got so dented i couldn't use it. I switched to the FMF Fatty and the bike had noticeably more power and sounded a lot better to. Also the fmf pipe is incredibly strong. My Fatty has one small dent and i have hit it much harder than my procircuit. FMF is definatly the best.

Overall
Durability
Ease of Installation
Performance
Power
Style
Location: lewiston id
Kx 85

I bought a fmf fatty for my kids kx 85 it hung 3 inches below the frame his second ride he came up short on a double and it completely folded under the frame $224 kissed good bye. i have used fmf on all my bikes but dont recomend it on the kx 85 major flaw

Overall
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: Kingwood, TX
FMF is the Best!

This is probably my 4th FMF pipe to own from 80cc bikes to 250cc. You cannot beat the quality that FMF puts into everything they build right here in the great USA! They have the best looking and most durable finish, plus you get that great deeper tone when finished off with a FMF Silencer. FMF does a great job on smoothing out the power band giving it a better linear range. I highly this product.

Overall
Durability
Ease of Installation
Performance
Power
Style
Location: AMARILLO TX
.LOTS OF POWER

I INSTALLED THE FATTY PIPE ON MY 1993 KDX 250 THE POWER THAT IT ADDS IS AMAZING .LOTS OF POWER THROUGH THE WHOLE POWERBAND

1-10 of 73
Total Questions (39)
Questions with answers:
  38
Questions without answers:
  1
1-10 of 39
2 days 15 hours ago
Do I have to rejet my carb?
I have a 2001 kx125 and was wondering if I have to rejet my carb
Amy13 25 days ago Location: Australia
Will I need to alter the jetting?
When changing from ktm stock standard exhaust manifold to FMF exhaust fatty pipe, will I need to alter the jetting? ( for KTM 150 xc)
Expert MotoSport Staff
24 days ago Location: Portland, OR, USA
There is not a specific setting I could give you for jetting your bike. It would really depend on your location (altitude/temperature) and how your bike is running with the current jetting. Jetting can be very tricky, there isn't one setting that will work everywhere with every bike. I would recommend taking your bike to a motorcycle with a service department to have it properly jetted.
Lachie 2 months 27 days ago Location: Australia
When buying the fmf fatty pipe for a Yamaha banshee quad do I get 2 because it is twin pipe or one?
MotoSport Staff Expert
2 months 27 days ago Location: Portland, OR, USA
You would received both pipe for your Yamaha Banshee. FMF sells them as a set of (2) pipes for that particular ATV.
trevor 2 months 27 days ago
Well the fatty pipe come with connector that connects to the silencer?
Expert MotoSport Staff
2 months 27 days ago Location: Portland, OR, USA
That connector would not be included with the pipe. I would recommend looking at the OEM diagrams for your bike to order that part. [ http://www.motosport.com/dirtbike/oem-parts/HONDA/1990/CR125/MUFFLER ]
Mort 3 months 19 days ago Location: New Jersey, USA
Does the pipe include the mounting springs and o rings or do have to purchase them separately?
MotoSport Staff Expert
3 months 18 days ago Location: Portland, OR, USA
The Springs and O-Rings are not included with the pipe, they are sold separately. I would recommend going with a FMF O-Ring & Pipe Spring Kit.
avihemo Over 6 months ago Location: Israel
Is this pipe fits a ktm 250 2t 2006 exc?
MotoSport Staff
Over 6 months ago Location: Portland, OR, USA
Yes, this exhaust is available for your 2006 KTM 250 EXC. All of the 2004-2010 KTM 250 models use the same exhaust pipe.
Paul Over 7 months ago Location: Melbourne VIC, Australia
On your fatty pipe for KTM 300, 2001 exc, is the manifold end a wedge fit and is the shipping for this pipe free to Melbourne, Australia?
MotoSport Staff
Over 7 months ago Location: Portland, OR, USA
For the 2001 KTM 300EXC, this exhaust fits over the exhaust manifold just like the stock pipe would.
Paul Over 7 months ago Location: Melbourne VIC, Australia
Looking to purchase a fatty for a KTM 300 exc 2001, is the header end o ring or flared if its o ring will it fit a standard header pipe?
Continued....are o rings supplied and will standard springs fit.
MotoSport Staff
Over 7 months ago Location: Portland, OR, USA
This exhaust like the stock exhaust on your 2001 KTM 300EXC. It will use the stock o-ring where it mates to the cylinder head and the stock exhaust springs are correct for it also. The exhaust will not include new o-rings or springs and they must be purchased separately if they need to be replaced.
Luke Over 7 months ago Location: California, USA
How do I Re-Jett my 2006 cr250?
How do I jet my 06 cr250 so i get the most out of my cr250? Is it hard to do?
MotoSport Staff
Over 7 months ago Location: Portland, OR, USA
The jetting can vary based on what is done to your bike and where you ride. Typically jetting is mostly associated with elevation and temperature and will vary based upon those conditions. You can either purchase a jetting kit with all the jets you will need and recommendations for jetting based on your elevation, or you can call the manufacturer of the exhaust and they can recommend a jetting spec for your location. The actual jetting is fairly easy once you have access to the carburetor. Adjusting the needle will be the most difficult portion as you must remove the top of the carburetor to gain access to the slide. The main and pilot jets are easy to access through the 17mm bolt on the float bowl of your carburetor for the CR250R.
tmcgrew Over 8 months ago
What is the difference between carbon steel and 18G steel?
MotoSport Staff
Over 8 months ago Location: Portland, OR, USA
Carbon steel is a type of steel and 18G is actually a measurement of the thickness. I assume you are comparing the Fatty and Gnarly. The Gnarly pipe is 18 Gauge steel while the fatty is a thinner 20 Gauge with 19 gauge header portion.
1-10 of 39

Dirt Bike


Honda

Honda CR125
Honda CR250

Honda CR80

Honda CR80 Big Wheel
Honda CR85
Honda CR85 Big Wheel

Husaberg

Husaberg TE250

Husaberg TE300

Kawasaki

Kawasaki KDX200
Kawasaki KDX250
Kawasaki KDX50
Kawasaki KX100
Kawasaki KX125

Kawasaki KX250
Kawasaki KX60

Kawasaki KX65
Kawasaki KX80
Kawasaki KX85

KTM

KTM 105SX
KTM 105XC
KTM 125SX
KTM 144SX
KTM 150SX
KTM 150XC
KTM 200SX
KTM 250EXC
KTM 250MXC
KTM 250SX

KTM 250XC
KTM 250XCW
KTM 300EXC
KTM 300MXC
KTM 300XC
KTM 300XCW

KTM 50SX
KTM 50SX Pro Jr.
KTM 50SX Pro Sr.
KTM 65SX
KTM 65XC
KTM 85SX
KTM 85XC

Suzuki

Suzuki JR50
Suzuki JR80
Suzuki RM100
Suzuki RM125
Suzuki RM250

Suzuki RM60
Suzuki RM65
Suzuki RM80

Suzuki RM85
Suzuki RM85L
Suzuki RMX250

Yamaha

Yamaha PW50
Yamaha PW80
Yamaha WR200
Yamaha WR250

Yamaha WR500
Yamaha YZ125
Yamaha YZ250

Yamaha YZ490
Yamaha YZ80
Yamaha YZ85

ATV


Honda

Honda ATC250R
Honda TRX250R

Kawasaki

Kawasaki KFX80

Polaris

Polaris PREDATOR 90
Polaris SCRAMBLER 400 2X4

Polaris SCRAMBLER 400 4X4

Suzuki

Suzuki LT250R QUADRACER
Suzuki LT500R QUADRACER

Suzuki LT80

Yamaha

Yamaha BANSHEE

Yamaha BLASTER

Utility ATV


Polaris

Polaris SPORTSMAN 400 4X4

Polaris SPORTSMAN 90

Be Informed

Be Confident

Part of the Backcountry Family:
Copyright © 2004 - 2014 MotoSport, Inc. All Rights Reserved. Selected content copyright and trademark respective companies, used with permission.