FMF Factory 4.1 RCT Exhaust System KTM / Husqvarna 450cc 2015-2017
Zoom
  • FMF Factory 4.1 RCT Exhaust System KTM / Husqvarna 450cc 2015-2017 - Stainless Steel/Aluminum/Carbon Fiber
  • FMF Factory 4.1 RCT Exhaust System KTM / Husqvarna 450cc 2015-2017 - Titanium/Titanium/Titanium
  • FMF Factory 4.1 RCT Exhaust System KTM / Husqvarna 450cc 2015-2017 - Titanium/Blue Titanium/Carbon Fiber
  • FMF Factory 4.1 RCT Exhaust System KTM / Husqvarna 450cc 2015-2017 - Titanium/Blue Titanium/Titanium

Please select a Material to check availability, or to add this item to your Shopping Cart or Wish List.

Select Material:

MSRP
$874.99 - $1,049.99
Savings (10%):
$87.50
Price
$787.49

Select qty:

Please select a Material to view availability.
Add to Wish List

Video Review

FMF Factory 4.1 RCT Exhaust System KTM / Husqvarna 450cc 2015-2017 Videos

This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

FMF Factory 4.1 RCT Exhaust System KTM / Husqvarna 450cc

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.

Features:

  • 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
  • Titanium MegaBomb Header
  • Quiet insert included (94db)
  • Meets AMA and FIM sound requirements 
  • 100% made in the USA

Weight:

  • Titanium / Carbon end cap 5.6 lbs
  • Full Titanium 5.7 lbs
  • Stainless Steel / Aluminum / Carbon 6.9 lbs
This Product Fits:
Husqvarna
FC450 2016, 2017
FX450 2017
KTM
450 SX-F 2016, 2017
450 SX-F Factory Edition 2015, 2016, 2017
450 XC-F 2016, 2017
Product Style RevZilla Item # Manufacturer Product # Availability
Stainless Steel/Aluminum/Carbon Fiber 1179956 045614 Available: Requires 1-3 business days lead time prior to shipment
Titanium/Titanium/Titanium 1085871 045599 Out of Stock
Titanium/Blue Titanium/Carbon Fiber 1085869 45588/045588 In Stock: Ships within 24 hours
Titanium/Blue Titanium/Titanium 1085870 045600 Out of Stock

Shipping

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.

Returns

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.

Write a Product Review for a chance to win our monthly $100 giveaways.
There are no reviews for this item. Write Review
Use our Product Q&A for a chance to win our monthly $100 giveaways.

Have a functionality, fit, or otherwise product-specific question about the FMF Factory 4.1 RCT Exhaust System KTM / Husqvarna 450cc 2015-2017? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 6 questions Browse 6 questions
No questions have been asked about this item. Be the first!