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FMF Factory 4.1 RCT Full System - Stainless/Aluminum w/ Carbon End Cap + Megabomb Best-selling full system for the KX450F. Stainless muffler with more info
$599.99 $539.99
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FMF Factory 4.1 RCT Slip-On Muffler - Titanium 150 SX Titanium Factory 4.1 for KTM 150 SX. 2-stroke premium. Applications: 2023-2025 KTM 150 SX
$674.99 $607.49
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FMF Factory 4.1 RCT Complete System - Titanium Megabomb Header + Muffler Full titanium system including the legendary Megabomb header. Huge more info
$1,199.99 $1,079.99
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FMF PowerCore 4 Hex Spark Arrestor Insert Hex-pattern spark arrestor insert for PowerCore 4. Reduces noise and sparks. Applications: Universal more info
$29.99 $26.99
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FMF Factory 4.1 RCT Spark Arrestor Screen Replacement Replacement spark arrestor screen for Factory 4.1 RCT. Meets USFS requirements. Applications: more info
$39.99 $35.99
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·Now offering complete end cap rebuild kits. Whether it be for a Powercore 4, Q4, Factory 4.1 or the new RCT we have you handled. The kit includes more info
$129.99 $116.99
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FMF Factory 4.1 RCT Quiet Insert 1-1/2? Spark Arrestor 94 dB quiet core insert with built-in spark arrestor. Drops sound dramatically while retaining more info
$39.99 $35.99
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FMF Factory 4.1 RCT Spiral Retaining Ring Kit Replacement spiral retaining rings for Factory 4.1 RCT quiet core. Secure fit. Applications: Universal more info
$5.99 $5.39
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The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, we achieve a shorter more info
$599.99 $539.99
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