*OPEN BOX AS IS* Pro Moto Billet / Fastway Spark Arrestor End Caps
*OPEN BOX AS IS* Pro Moto Billet / Fastway Spark Arrestor End Caps

*OPEN BOX AS IS* Pro Moto Billet / Fastway Spark Arrestor End Caps

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Open box, original packaging is open. Has not been installed.  


The best power gain for the least money in moto is right here with the PMB End Cap.

Fastway by Pro Moto Billet’s Spark Arrestor is a fully billet CNC machined 6061 billet aluminum end cap with a U.S.F.S. spark arrestor.. 

Installation is super straight forward and simple, you'll need just regular shop tools and a drill. 

The stock muffler outlet port on a KTM EXC is 28mm! Sit with that for a second. A 500cc bike with a 28mm outlet port?! But the inter muffler pass through pipe is 42.5mm. 

So if you want an end cap that's also got a 42.5mm outlet port then the PMB cap is here to save the day. We see a 4-9% power boost with these installed - of course with fueling sorted out, and we highly recommend the Dobeck EJK which we also offer and support. 

Also offered separately is a silencer insert witch scrubs the bark by up to 8db's over the unmuffled unit.

*May require fuel tuning on certain bikes. Call us if you have any questions.


19+ HUSQVARNA FC 250-450
19+ KTM SXF / XCF 250-450
20+ KTM 250-500 EXC-F / XCF-W
20+ HUSQVARNA FE, FEs 250-501

17-18 Husqvarna FC 250
17-19 Husqvarna FE 250-350-450-501


**Please observe sound restrictions in your riding area and be a responsible rider. 

**May or may not be emissions legal in your state. It's your responsibility to ensure you comply with all local and federal requirements for your motorcycle and it's use. 

**Installing this end cap WILL effect the fueling of your machine and this will need to be accounted for with jetting changes or EFI tuning.


Sound levels at idle speed tested at 1' above and 1' behind each
muffler on the same 21' 500 EXCF tested back to back.

Stock muffler 82
Stock w Pro Moto end cap / ultra silent insert 85
Stock w Pro Moto end cap / silent insert 86
Stock w Pro Moto end cap 88

Graves Motorsports w db killer 85
Graves Motorsports 89

Fmf q4 84
Fmf 4.1 88
Fmf power core 88

Lexx w db killer 86
Lexx w spark arrestor insert 87
Lexx 89

Akropovic 85