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The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology™ both internally and externally. Factory 4.1 RCT Slip-On Muffler. Yamaha YZ 250 2022-2023. Yamaha YZ 250 F 2019-2021. Yamaha YZ 250 FX 2020-2023.
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For installation, no structural modifications to the motorcycle are required for use of the product in an approved version. It is recommended to read the instructions in the package or the tutorials visible on and on youtube. For on-line purchases it is necessary to activate the warranty by sending the special coupon stamped by the installation workshop via email to , for purchases at physical stores the shop stamp is sufficient. The exhaust has a removable dbkiller (noise restrictor) for racing use, remove the dbkiller is not ONLY illegal, but the customer assumes the responsibility to use the motorbike as on the circuits only, without bags, without Flash light and number plate holder or other parts that would conflict with the different angle of the gas following the transformation into.
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Complete RACING system for track use made in respect to FIM homologation limits, the kit consists of manifold with ULTRABOMB expansion and new PENTACROSS silencers line. Manifold and silencers are made of 304 stainless steel, average performance increase of 2cv, significant reduction in weight, developed thanks to the collaboration with the MXGP team .
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10-13 YZ250F F4.1 AL CARBON, FMF 044382 FACTORY SILENCER 10-13 YZ250F F4.1 AL CARBON, FMF 044382 FACTORY SILENCER YamahaYZ250F 2010-2013 FMF 044382 The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally.
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Fits: Yamaha YZ250FX 2015 2016 2017 2018 2019 Yamaha WR250F 2015 2016 2017 2018 2019 Description: This is a complete RACING system for track use with dual silencers. The manifold and silencers are made of 304 stainless steel, providing an average performance increase of 2cv and reduced weight. It also provides a significant reduction in weight. This system was developed in collaboration with the MXGP team. Features: Weight: 3.9 Lbs. / 1.8 Kg Length: 13.78 in. / 350 mm Stainless steel The package includes installation instructions, flanges, bushings, bracket for the installation Includes removable DB Killer and Spark Arrestor Mounts directly on the cylinders without any modifications 2-year international warranty Made in Italy.
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Complete RACING system FULL TITANIUM! for track use made in respect to FIM homologation limits, the kit consists of manifold with ULTRABOMB expansion and new PENTACROSS silencers line. Silences & header are full titanium made, average performance increase of 2cv, significant reduction in weight, developed thanks to the collaboration with the MXGP team .
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