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All products have accurate in stock quantities listed, if it shows in stock it’s actually in stock!
Free Shipping on orders over $69.99 to the continental 48 (Alaska & Hawaii orders, call 402-214-0706 to order).
All products have accurate in stock quantities listed, if it shows in stock it’s actually in stock!
Fmf

FMF Factory 4.1 RCT Muffler - 042291 Kawasaki KX 450 2009-2011

MPN: 042291 SKU: 1821-1392
Fmf

FMF Factory 4.1 RCT Muffler - 042291 Kawasaki KX 450 2009-2011

MPN: 042291 SKU: 1821-1392
Availability:
Only 3 left!
The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology™ both internally and externally In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering - moving the muffler closer to the motor to centralize mass The Factory 4.1 RCT is constructed from only aerospace grade materials that meet their exacting specifications and is manufactured 100% at their Southern California factory Massive Power gains throughout the RPM range. Huge weight savings RTS (Rapid Tuning System) Specs Model Factory 4.1 RCT Muffler Color/Finish Raw End Cap Material Carbon Fiber Units Each Pipe Material Stainless Steel Product Name Muffler Riding Style Off-Road Type Slip-On Muffler Material Aluminum
Original price $599.99 - Original price $599.99
Original price
$599.99
$599.99 - $599.99
Current price $599.99

Product Details

Features

  • The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology™ both internally and externally
  • In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering - moving the muffler closer to the motor to centralize mass
  • The Factory 4.1 RCT is constructed from only aerospace grade materials that meet their exacting specifications and is manufactured 100% at their Southern California factory
  • Massive Power gains throughout the RPM range.
  • Huge weight savings
  • RTS (Rapid Tuning System)

Specs

Model Factory 4.1 RCT
Muffler Color/Finish Raw
End Cap Material Carbon Fiber
Units Each
Pipe Material Stainless Steel
Product Name Muffler
Riding Style Off-Road
Type Slip-On
Muffler Material Aluminum

Product Description

Features

  • The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology™ both internally and externally
  • In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering - moving the muffler closer to the motor to centralize mass
  • The Factory 4.1 RCT is constructed from only aerospace grade materials that meet their exacting specifications and is manufactured 100% at their Southern California factory
  • Massive Power gains throughout the RPM range.
  • Huge weight savings
  • RTS (Rapid Tuning System)

Specs

Model Factory 4.1 RCT
Muffler Color/Finish Raw
End Cap Material Carbon Fiber
Units Each
Pipe Material Stainless Steel
Product Name Muffler
Riding Style Off-Road
Type Slip-On
Muffler Material Aluminum

Part Numbers
Store SKU MFR. Product # Availability
1821-1392 042291 In Stock
Fitment
This product is vehicle specific. Select your vehicle to confirm fitment.

This Product Fits

Fitment Disclosure

This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.

Features

  • The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology™ both internally and externally
  • In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering - moving the muffler closer to the motor to centralize mass
  • The Factory 4.1 RCT is constructed from only aerospace grade materials that meet their exacting specifications and is manufactured 100% at their Southern California factory
  • Massive Power gains throughout the RPM range.
  • Huge weight savings
  • RTS (Rapid Tuning System)

Specs

Model Factory 4.1 RCT
Muffler Color/Finish Raw
End Cap Material Carbon Fiber
Units Each
Pipe Material Stainless Steel
Product Name Muffler
Riding Style Off-Road
Type Slip-On
Muffler Material Aluminum