IMPORTANT CALIFORNIA SPECIFIC EMISSIONS NOTICE

California laws prohibit (in most cases) the use of any aftermarket product whose installation requires the removal of any emissions control related components as regulated by the California Air Resources Board. Three classification levels of emissions related aftermarket products define which aftermarket parts can be sold legally in the state of California:

Replacement Parts
parts that have the same function and affect on emissions as the parts they are replacing. This means that if a vehicle was not originally equipped with a catalyst and all other emissions related controls that were connected (such as oxygen sensors) are reconnected, then the part is considered a Replacement Part. If the vehicle has a catalyst and the installation of the part does not remove the catalyst, and all other emissions related controls are reconnected, then this is considered a replacement part. Slip on mufflers in applications whereby the catalyst is not contained in the original muffler is an example of a replacement part. Full exhaust systems installed on vehicles that did not originally contain a catalyst and whereby the design allows the reinstallation and original function of any other emissions control related components are also considered replacement parts.
Modified Parts
parts that alter the emissions control related performance from the original part they are replacing, These parts may have catalysts in them but they perform differently from the original equipment part or they may require the alteration or elimination of other emissions related control components such as oxygen sensors. These parts must obtain an Executive Order ("EO") from the California Air Resource Board (C.A.R.B.) to confirm their functional compliance in order to be sold legally in California.
Competition or Racing Vehicle Parts
parts that are used exclusively in competition on race only vehicles. These parts do not require approval as long as they "are not used on public highways". Labeling a product as being for "Racing Only" or "Closed Course Competition" is not sufficient for it to be included under this classification. It must be a competition vehicle and must not be used at any time on a public highway.

Many exhaust systems, intake kits, fuel tuners, and performance parts we sell are specifically designed and designated as/for "Competition and Racing Vehicles Only". Any/All model application pictures shown are for reference only and solely intended for Competition and Racing Vehicles only and must not be used at any time on a public road/highway.

If an item is designated as "Competition and Racing Vehicles Only", we will require a race waiver be digitally signed before an item can ship to California. If an item is to be exported from California, an export waiver is available as well. This is a REQUIRED guarantee from you that a restricted item will NOT be used on any public highway in California; only on private race tracks in racing or competition use.

Many "Modified Parts" are sold with out restriction in California and will be identified with a C.A.R.B. "EO" number and will arrive with appropriate labels to indicate the approved status. If you're not sure about the California emissions status of an item, please contact us for clarification before placing your order

Check the shipping calculator for estimated shipping costs. If your location isn't shown, or shipping cannot be calculated for your location, please contact us for a shipping price. International buyers are responsible for duty and VAT charges. We do not collect those fees, we do not have control over them, nor do we know how much they will be for any given country.
Our retail/internet/mail order warehouse is in the Gorman, California area between Los Angeles and Bakersfield. All items are available for local pick up, but please contact us to make arrangements before hand.
Some high-value items will require signature for delivery.
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Sunday - 8am-Noon PST
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Please check the estimated delivery date shown in the shipping tab, these are updated daily based on current inventory across all of our warehouses. We always try to meet or beat these stated delivery times. Some items are made to order and can have longer lead times; check the shipping details for an estimate. Please contact us for expedited shipping options if needed.
All exchanges and returns must be in the original packaging, with all directions & accessories, in new condition. Please contact us with any questions.

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Product Details:

  • Blue anodized titanium muffler sleeve
  • Titanium mid pipe
  • Carbon fiber end cap
  • Spark arrestor included
  • Quiet insert included
  • Massive power gains throughout the RPM range
  • Huge weight savings
  • New RTS (Rapid Tuning System)
  • FMF uses the highest quality proprietary blend of alloy grade titanium made especially to our standards
  • Can be used with stock OEM head pipe or FMF head pipe
The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our 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 our exacting specifications and is manufactured 100% at our Southern California factory.

Fits the following vehicles

typeyearsmakemodelenginerequiredlocationnotes
Motorcycle13-14HusabergFE2502501
Motorcycle13-14HusabergFE3503501
Motorcycle13-14HusabergFE5015011
Motorcycle14-16HusqvarnaFE2502501
Motorcycle14-16HusqvarnaFE3503501
Motorcycle15-16HusqvarnaFE4504491
Motorcycle07-15KTM250 SX-F2491
Motorcycle2015KTM250 SX-F Factory Edition2501
Motorcycle07-09, 11-15KTM250 XC-F2491
Motorcycle07-16KTM250 XCF-W249,2501
Motorcycle2011KTM250 XCF-W Six Days2491
Motorcycle11-15KTM350 SX-F3491
Motorcycle11-15KTM350 XC-F3501
Motorcycle12-16KTM350 XCF-W3501
Motorcycle09-10KTM400 XC-W4001
Motorcycle10-11KTM450 EXC4501
Motorcycle2008KTM450 EXC-R4501
Motorcycle07-10, 2013KTM450 SMR4491
Motorcycle07-15KTM450 SX-F4491
Motorcycle12-14KTM450 SX-F Factory Edition4491
Motorcycle08-10, 13-15KTM450 XC-F4501
Motorcycle09-10, 12-16KTM450 XC-W449,4501
Motorcycle2008KTM450 XCR-W4501
Motorcycle12-16KTM500 EXC5101
Motorcycle13-16KTM500 XC-W500,5101
Motorcycle12-14KTM500 XCF-W5101
Motorcycle2008KTM505 SX-F5051
Motorcycle08-09KTM505 XC-F478,5051
Motorcycle09-11KTM530 EXC530,5001
Motorcycle2008KTM530 EXC-R5301
Motorcycle09-10KTM530 XC-W5301
Motorcycle2008KTM530 XCR-W5101
Unless stated otherwise, these vehicle compatibilities are based on USA models with original equipment.
Thanks for shopping with us !

Starcycle USA has been serving the world's motorcyclists since 1968. Our retail/internet/mail order warehouse is in the Gorman, California area between Los Angeles and Bakersfield. All items are available for local pick up, and installation! If you'd like to make an appointment for service contact us.