FMF Powercore 2 Silencer 025064 — KTM 85 SX / 85 XC / 105 SX / 105 XC 2003-2017

FMF Powercore 2 Silencer 025064 — KTM 85 SX / 85 XC / 105 SX / 105 XC 2003-2017

Product Description

Drop weight and unleash the crisp, classic sound of your two-stroke engine with the FMF Powercore 2 Silencer 025064. Standing as the absolute benchmark and most popular two-stroke slip-on exhaust system in FMF's legendary lineup, the Powercore 2 is built to elevate your machine's track presence and track performance. The lightweight, elliptically shaped aluminum canister combined with an optimized internal perforated core allows your exhaust gases to scavenge cleanly, providing excellent power delivery across all riding conditions.

Built to handle the harsh demands of competitive motocross and off-road riding, this premium muffler features heavy-duty construction where it matters most. It comes equipped with FMF’s proprietary high-flow stainless steel Performance Flow end cap and a rugged, nickel-plated front stinger pipe for permanent corrosion resistance. Whether you are attacking technical singletrack or running wide open on a high-speed MX course, this bolt-on silencer delivers the high-RPM gains and reliable durability your young racer requires to stay upfront.

Top Features: FMF Powercore 2 Silencer

• Lightweight Aluminum Canister: Drastically reduces rear-end machine weight compared to bulky factory steel mufflers, improving corner handling.
• Optimized Perforated Core: Maximizes internal acoustic tuning and internal exhaust velocity for broad, usable power gains.
• Performance Flow End Cap: Crafted from premium stainless steel to guide exhaust gases smoothly while protecting against rear-end crashes.
• Nickel-Plated Front Stinger: Provides premium structural integrity and excellent protection against rust, weather, and flying roost.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Sub-Model
2003-2016	KTM	85 SX
2017	KTM	85 SX (17/14)
2008-2009	KTM	85 XC
2007-2012	KTM	105 SX
2007-2012	KTM	105 XC

Frequently Asked Questions

Q: Does this silencer require regular maintenance, or is it completely sealed?
A: The Powercore 2 features a fully rebuildable configuration. Over time, internal two-stroke oil and unburnt fuel will saturate the packing material, resulting in power loss and a louder exhaust note. We recommend removing the end cap screws and replacing the internal fiberglass packing every 20-30 hours of hard track operation.

Q: Can I run this slip-on muffler with my stock factory KTM expansion chamber pipe?
A: Yes, FMF designs this slip-on unit to be fully compatible with either your original factory expansion chamber or any corresponding performance FMF expansion pipe (such as the FMF Factory Fatty or Gnarly series).

Expert Pro-Tip: When slipping your new FMF silencer over the header pipe connection joint, never rely solely on a dry metal-to-metal connection. Apply a thin, consistent bead of high-temperature silicone sealant (such as Permatex Red or copper RTV) right around the slip joint inlet. This tiny seal blocks dangerous micro air leaks that draw cool outside air into the system, which can cause erratic low-end lean bogging and annoying black exhaust splatters on your swingarm.

Recommended Pairings:
o KTM 85 SX Performance Parts & Upgrades
o KTM 2-Stroke Performance Parts
o Motorcycle Chemicals

At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. Every order ships fast from our Central Florida location.

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