Free Shipping Over $39.99
Orders $39.99 or more ship free within the contiguous U.S.Free Shipping Policy
No Restock Fees
Doesn't fit? Don't love it?
Return any unused item within 30 days for a full refund.
- Obtain an RA number
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Price Match Guarantee
Found it for less?
RevZilla will match any advertised price on new merchandise available through another authorized U.S. dealer.Price Match Policy
The ZillaCash rewards program is very straightforward - if you have a RevZilla account, you may already be taking advantage of ZillaCash rewards. Review the following guidelines to see how easy it is to maximize your rewards and put your ZillaCash to work for you.
- Earn and redeem ZillaCash credit automatically with each order - no fine print, no strings attached, and no hoops to jump through to cash in.
- All you need is a RevZilla account to start earning - Simply log in each time you shop with RevZilla and we’ll take care of the rest, keeping more money in your pocket just for shopping with us.
- Earn $5 for Each $100 You Spend on eligible products - up to a maximum of $30 ZillaCash per order for orders totaling $600 or more. Any ZillaCash you earn is automatically applied to the next purchase, so you can sit back, enjoy the ride and feel the savings blow through your hair.
FMF Factory 4.1 RCT Full Exhaust Yamaha YZ450F / YZ450FX / WR450F
The FMF Factory 4.1 RCT full system is constructed from aerospace-grade materials that meet FMF's exacting specifications and is 100% manufactured in their Southern California factory. The patented MegaBomb header design allows exhaust gases to expand, cool and ramp back up at a higher velocity. This results in torque gains typically associated with longer headers, and the healthy over-rev of a short header. The muffler itself is shorter than OEM mufflers, making it less susceptible to crash damage and complements the centralized mass design by moving it closer to the motor. The rear end cap was engineered for fast and easy tuning by utilizing a retaining ring to keep the standard and optional inserts in place.
- Massive power gains throughout the RPM range
- Huge weight savings over stock exhaust
- RTS (Rapid Tuning System) for quick and easy track-side tuning
- Removable spark arrestor included
- MegaBomb Header
- Quiet insert sold separately
- Meets AMA and FIM sound requirements
- 100% made in the USA
- Stainless Steel / Aluminum / Carbon end cap 7.5 lbs
- Titanium / Titanium / Carbon end cap 5.7 lbs
|Product Style||RevZilla Item #||MFR. Product #||Availability|
|Product Style Titanium/Blue Titanium/Carbon Fiber||RevZilla Item #1001591||MFR. Product #044412||AvailabilityIn Stock: Ships next business day|
|Product Style Stainless/Aluminum/Carbon Fiber||RevZilla Item #1001604||MFR. Product #044414||AvailabilityIn Stock: Ships next business day|
- FE350 2013-2014
- FC250 2014-2015
- FC250 2016-2017
- FC350 2015
- FC350 2016
- FC450 2014-2015
- FC450 2016-2017
- FE250 2014-2015
- FE350 2014-2015
- FX450 2017
- 250 SX-F 2011-2012
- 250 SX-F 2013-2015
- 250 SX-F 2016-2017
- 250 SX-F Factory Edition 2015-2017
- 250 XC-F 2013-2015
- 250 XC-F 2016-2017
- 250 XCF-W 2014-2016
- 350 EXC-F 2012-2015
- 350 SX-F 2013-2015
- 350 SX-F 2011-2012
- 350 SX-F 2016
- 350 XC-F 2013-2015
- 350 XC-F 2011-2012
- 350 XC-F 2016
- 350 XCF-W 2014-2016
- 350 XCF-W 2012-2013
- 450 SMR 2013
- 450 SX-F 2011-2012
- 450 SX-F 2013-2015
- 450 SX-F 2016-2017
- 450 SX-F Factory Edition 2012-2014
- 450 SX-F Factory Edition 2015-2017
- 450 XC-F 2013-2015
- 450 XC-F 2016-2017
- 450 XC-W 2012-2016
- 500 EXC 2012-2015
- 500 XCF-W 2012
- 500 XC-W 2013-2016
Orders $39.99 and over qualify for our fast free shipping offer. Click Here for FREE Shipping Terms and Conditions.
Please see our International Orders page for orders shipping outside the US.
We show real-time availability on this product page when you select the size/color item you want. Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.
See our full Shipping Policy for further details.
If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.
Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.
See our full Return Policy for all of the pertinent details.