FMF Powercore 2 Shorty Silencer 025065 — KTM 85 SX / 85 XC / 105 SX / 105 XC 2003-2017

FMF Powercore 2 Shorty Silencer 025065 — KTM 85 SX / 85 XC / 105 SX / 105 XC 2003-2017

Product Description

Maximize your machine's explosive power out of the corners with the FMF Powercore 2 Shorty Silencer 025065. Universally recognized as the most desirable silencer configuration for supercross and tight stadium-style performance, the Shorty is engineered to alter backpressure for an immediate response. By shortening the overall length of both the aluminum canister and its internal perforated core, FMF effectively optimizes exhaust scavenging to significantly improve the hard low-to-mid range power hit of your mini racer.

Built to handle rigorous off-road racing conditions, this premium slip-on muffler features a lightweight oval aluminum canister mated to a rugged stainless steel mid-pipe and a sleek conical end cap. It strips away top-heavy rear weight compared to bulky stock factory mufflers, noticeably enhancing cornering agility. Whether you are attacking technical indoor tracks or looking to jump out of deep loam ruts faster, this bolt-on silencer delivers the crisp, aggressive two-stroke power snap that puts riders at the front of the pack.

Top Features: FMF Powercore 2 Shorty Silencer

• Shortened Canister Architecture: Decreases internal volume to accelerate exhaust gas pulse velocity, maximizing bottom-end snap and acceleration.
• Lightweight Oval Aluminum Body: Considerably reduces vehicle mass relative to OEM silencers, optimizing handling dynamics and weight distribution.
• Track-Proven Core Tuning: High-flow internal perforated core layout maximizes power transfer across competitive racing environments.
• Durable Stainless Steel Components: Heavy-duty mounting brackets and premium inlet pipe construction ensure longevity against flying track 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: What is the primary difference in performance between the FMF Shorty and a standard Powercore 2 silencer?
A: The standard Powercore 2 offers a broad, evenly distributed powerband boost across all RPM ranges. The Shorty silencer condenses that exhaust resonance to specifically target and intensify the immediate bottom-end power delivery, providing a much sharper and punchier throttle response when exiting corners.

Q: How often should I rebuild and service the internal packing of this FMF Shorty silencer?
A: Because shorty models feature less overall volume, the packing material inside gets saturated with unburnt two-stroke oil slightly faster. We highly recommend extracting the end cap and repacking the core with fresh fiberglass filler every 15 to 25 hours of operation to prevent power drops and excessive bark.

Expert Pro-Tip: When installing a high-performance two-stroke silencer, avoid reusing an old, degraded rubber pipe-to-silencer coupler sleeve. A worn joint allows unburnt oil (spooge) and exhaust gases to bleed out, which ruins your subframe finish and disrupts critical internal wave pressure cycles. Always replace it with a fresh silicone sleeve coupler and seal the dry joints with a thin film of high-temperature RTV silicone for optimal performance results.

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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