really easy to install! My kid was smiling ear to ear when he heard his new bike.
FMF Factory 4.1 Complete Exhaust With Stainless Hi-Flo Header
- 10 Reviews
- 13 Questions
The Factory 4.1 system will give you a noticeable increase in all around power, and also shed some weight from your machine. Superior power on stock and big bore motors and the centralized mass improves handling.
FMF takes fun seriously, so they built the Mini Factory 4.1. This is an all out performance exhaust for play bikes. With the Mini Factory 4.1, you will be the king of backyard motocross and look great doing it!
- The lightest available.
- Superior power on stock and big bore motors.
- Patented Chamber Core for optimum performance.
- Engineered for compactness and centralized mass.
- Exclusive mounting design.
- Easily serviced for re-packing.
- Type: System.
- Construction: Titanium.
- Finish: Natural.
- Header construction: Stainless steel.
- Header type: Hi-Flo.
- Weight: 3.3 pounds.
Note: For closed course competition use only. Not intended for street use.
I love this exhaust system!
Great price, fast shipping, super easy install just don't forget spark arrestor if in cali.
Bought this pipe for a 2012 KLX110L. It's advertised as being made for the bike, but I suspect it's really made for the older model KLX110. It's easy to install and bolts right up, but when you put the plastic back on, you'll find that the pipe pushes up against the plastic side plate at its front edge. When you ride, it melts the plastic there. In addition because the pipe is completely straight as it runs back, your right boot will get melted against the side of the pipe. Don't think you'd want to ride with just sneakers and shorts on!
Sounds good, and there's an obvious improvement in throttle response and acceleration.
Put this on my yz250f and was expecting only the best when spending 600 on an exhaust. Let me tell you. Best investment I could have made. Gives the bike a completely different sound and you can feel the power it adds on. You get what you pay for. Couldn't be more happy.
I have this set up on my 06 yz250f and it is absolutly amazing. The power gain from it is definitely noticeable over the stock exhaust. Fmf is the only way to go for the best performance exhausts out on the market. This exhaust system also gives the bike a different look. This is a great buy for your bike if your looking to add some more power to your bike.
Great power everywhere gives it a nice sound to it
bought for a2008 crf 450 stronger mid-range revs a little longer on top .fit with no problems did not have to rejet
easy install and sounds great, it added quite a bit of power and had a noticable difference up top but seemed to bog a little down low with the stock jets and airbox
added more power + increased overall performance.