FMF Factory 4.1 RCT Slip-On Exhaust KTM / Husqvarna 250cc-501cc 2015-2017
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  • FMF Factory 4.1 RCT Slip-On Exhaust KTM / Husqvarna 250cc-501cc 2015-2017 - Stainless Steel/Aluminum/Carbon Fiber
  • FMF Factory 4.1 RCT Slip-On Exhaust KTM / Husqvarna 250cc-501cc 2015-2017 - Titanium/Titanium/Titanium
  • FMF Factory 4.1 RCT Slip-On Exhaust KTM / Husqvarna 250cc-501cc 2015-2017 - Titanium/Blue Titanium/Carbon Fiber
  • FMF Factory 4.1 RCT Slip-On Exhaust KTM / Husqvarna 250cc-501cc 2015-2017 - Stainless Steel/Aluminum/Stainless Steel
  • FMF Factory 4.1 RCT Slip-On Exhaust KTM / Husqvarna 250cc-501cc 2015-2017 - Titanium/Blue Titanium/Titanium

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MSRP
$374.99 - $499.99
Savings (10%):
$37.50
Price
$337.49

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Video Reviews (2)

FMF Factory 4.1 RCT Slip-On Exhaust KTM / Husqvarna 250cc-501cc 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 Slip-On Exhaust KTM / Husqvarna 250cc-501cc

If you are looking to drop weight, improve looks and most importantly improve your bikes power band then look no further. The FMF Factory 4.1 RCT Slip-On muffler was designed to bring out the hidden power potential in your machine by improving top-end pull and low-end torque. All 4.1 RCT mufflers are manufactured in FMF's Southern California factory using aerospace-grade materials that meet FMF's exacting specifications. A patented core shape enhances exhaust pressure for optimal power output while also lowering the sound level. 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 snap ring feature 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 trackside tuning
  • Removable spark arrestor included
  • Quiet insert included (94db)
  • Can be used with FMF or stock OEM Header
  • 100% made in the USA

Weight:

  • Full Titanium 4.3 lbs
  • Titanium / Carbon end cap 4.2 lbs
  • Stainless Steel / Aluminum / Carbon end cap 4.4 lbs
  • Stainless Steel / Aluminum / Stainless Steel end cap 4.5 lbs
4.8 / 5
Bang For The Buck
5 / 5
Features
5 / 5
Style
5 / 5
Ease Of Install
5 / 5
Fit & Finish
4 / 5
Durability
5 / 5
This Product Fits:
Husqvarna
FC250 2016, 2017
FC350 2016, 2017
FC450 2016, 2017
FE250 2017
FE350 2017
FE450 2017
FE501 2017
FX350 2017
FX450 2017
KTM
250 SX-F 2016
250 SX-F Factory Edition 2015, 2016, 2017
250 XC-F 2016, 2017
350 EXC-F 2017
350 SX-F 2016
350 XC-F 2016, 2017
450 EXC-F Six Days 2017
450 SX-F 2016
450 SX-F Factory Edition 2015, 2016, 2017
450 XC-F 2016, 2017
500 EXC 2017
Product Style RevZilla Item # Manufacturer Product # Availability
Stainless Steel/Aluminum/Carbon Fiber 1077482 045594 Available: Requires 1-3 business days lead time prior to shipment
Titanium/Titanium/Titanium 1077483 045595 In Stock: Ships within 24 hours
Titanium/Blue Titanium/Carbon Fiber 1047776 045586 In Stock: Ships within 24 hours
Stainless Steel/Aluminum/Stainless Steel 1077481 045593 Out of Stock
Titanium/Blue Titanium/Titanium 1077484 045596 Out of Stock

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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.

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Browse 11 questions Browse 11 questions and 1 answer
Does this muffler require remapping fuel system on a 2017 KTM 500 exc-f?
Gus G on Apr 8, 2017
BEST ANSWER: I put mine in at crf 250 r and it didn't need remapping