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FMF Powercore 4 Muffler Yamaha YZ 250F/450F 06-09 | 044228. When designing the PowerCore4, we looked at our top of the line products to deliver race-inspired performance at an economical price. The end result is a quality muffler with improved torque, increased horsepower and rugged durability all... - FMF Powercore 4 Muffler Yamaha YZ 250F/450F 06-09 | 044228. | | $420.99
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FMF Quiet Performance Q4 Spark Arrestor Kawasaki KLR600/650 (84-07) | 042320. FMF is the leader in high performance quiet technology and our Q4 is the next evolution in off road exhaust. The Q4 employs intricate chambers, baffles and proprietary multistage packing material making it the best performing quiet muffler avai... - FMF Quiet Performance Q4 Spark Arrestor Kawasaki KLR600/650 (84-07) | 042320. | | $473.99
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FMF Q4 Hex Spark Arrestor Yamaha YZ/WR 250F/X (14-19) | 044426. FMF is the leader in high performance quiet technology and our Q4 HEX is the next evolution in off road exhaust. The Q4 employs intricate chambers, baffles and proprietary multistage packing material making it the best performing quiet muffler ... - FMF Q4 Hex Spark Arrestor Yamaha YZ/WR 250F/X (14-19) | 044426. | | $473.99
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FMF Powercore 4 Hex Muffler Yamaha YZ/WR 250/X (14-19) | 044423. When designing the PowerCore 4 HEX, we looked at our top of the line products to deliver race-inspired performance at an economical price. The end result is a quality muffler with improved torque, increased horsepower and rugged durabilit... - FMF Powercore 4 Hex Muffler Yamaha YZ/WR 250/X (14-19) | 044423. | | $420.99
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FMF Powercore 4 Hex Muffler Yamaha WR250F (20-21) | 044471. When designing the PowerCore 4 HEX, we looked at our top of the line products to deliver race-inspired performance at an economical price. The end result is a quality muffler with improved torque, increased horsepower and rugged durabilit... - FMF Powercore 4 Hex Muffler Yamaha WR250F (20-21) | 044471. | | $420.99
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FMF Powercore 4 Hex Muffler Yamaha YZ250F/X (19-23) | 044451. When designing the PowerCore 4 HEX, we looked at our top of the line products to deliver race-inspired performance at an economical price. The end result is a quality muffler with improved torque, increased horsepower and rugged durabilit... - FMF Powercore 4 Hex Muffler Yamaha YZ250F/X (19-23) | 044451. | | $420.99
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FMF Anodized Ti Factory 4.1 Muffler 19-24 Yamaha YZ/WR 450F(X) | 044445. The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology(TM) both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our Factory Forwa... - FMF Anodized Ti Factory 4.1 Muffler 19-24 Yamaha YZ/WR 450F(X) | 044445. | | $841.99
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FMF Factory 4.1 Slip-On Muffler Yamaha WR450F 20 | 044464. The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology(TM) both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our Factory Forwa... - FMF Factory 4.1 Slip-On Muffler Yamaha WR450F 20 | 044464. | | $684.99
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FMF Powercore 4 Hex Muffler Yamaha WR450F (2020) | 044462. When designing the PowerCore 4 HEX, FMF looked at top of the line products to deliver race-inspired performance at an economical price. The end result is a quality muffler with improved torque, increased horsepower and rugged durability a... - FMF Powercore 4 Hex Muffler Yamaha WR450F (2020) | 044462. | | $420.99
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