Dirt Bike 4-Stroke Mufflers
Upgrade to 4-stroke mufflers engineered for maximum efficiency and sound control. These high-performance components enhance power delivery while delivering a smoother, quieter ride. Perfect for competitive racing or casual trail rides, our dirt bike 4-stroke mufflers ensure top-tier performance with lasting durability.
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- Qty in Cart
- Quantity
- Price
- Subtotal
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FMF Factory 4.1 RCT Muffler - Anodized Titanium 041587
FMF
$749.99If you're serious about extracting maximum performance from your machine, the FMF Factory 4.1 RCT muffler delivers measurable power gains across the entire RPM band without the weight penalty of traditional exhausts. The anodized titanium construction...18211978- SKU:
- 18211978
- Availability:
- Ships Same Business Day
- Weight:
- 6.89 LBS
- PIPE MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- STRAIGHT CAN
- TYPE:
- SLIP-ON
- END CAP MATERIAL:
- CARBON FIBER
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- MUFFLER MATERIAL:
- TITANIUM
- END CAP STYLE:
- CONICAL
- UNITS:
- EACH
$749.99 -
FMF Powercore 4 Muffler 041584
FMF
$359.99If you're looking to unlock measurable gains across your entire power band without compromising durability or reliability, the FMF Powercore 4 Muffler delivers real performance where it counts. The combination of lightweight aluminum construction and...18211966- SKU:
- 18211966
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- END CAP MATERIAL:
- STAINLESS STEEL
- END CAP STYLE:
- CONICAL
- MODEL:
- POWERCORE 4
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- OVAL
- TYPE:
- SLIP-ON
- BASE COLOR:
- SILVER
- MUFFLER MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- MUFFLER
- UNITS:
- EACH
$359.99 -
FMF Mini PowerCore 4 Slip-On Muffler - with Spark Arrestor 041582
FMF
$239.99If you're running a small-displacement or mini bike engine and want genuine performance gains without breaking your budget, the FMF Mini PowerCore 4 delivers measurable improvements in throttle response and power delivery. This slip-on muffler combines...18211965- SKU:
- 18211965
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- FEATURES:
- WITH SPARK ARRESTOR
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- MODEL:
- MINI POWERCORE 4
- PRODUCT NAME:
- MUFFLER
$239.99 -
FMF Mini PowerCore 4 Slip-On Muffler - without Spark Arrestor - CRF125F '19+ 041581
FMF
$209.99The stock muffler on your CRF125F is costing you power and adding unnecessary weight. This FMF Mini PowerCore 4 slip-on delivers a measurable boost in throttle response and acceleration while trimming pounds from your machine—noticeable improvements that...18211964- SKU:
- 18211964
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- FEATURES:
- WITHOUT SPARK ARRESTOR
- MODEL:
- MINI POWERCORE 4
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
$209.99 -
FMF Factory 4.1 RCT Muffler - Anodized Titanium 044429
FMF
$799.99If you're serious about extracting maximum performance from your machine while reducing unsprung weight, the FMF Factory 4.1 RCT delivers measurable gains across the entire RPM band. The advanced Resonance Chamber Technology internally and externally...18211612- SKU:
- 18211612
- Availability:
- Ships Same Business Day
- Weight:
- 6.40 LBS
- PRODUCT NAME:
- MUFFLER
- TYPE:
- SLIP-ON
- END CAP MATERIAL:
- CARBON FIBER
- MUFFLER MATERIAL:
- TITANIUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- PIPE MATERIAL:
- TITANIUM
- RIDING STYLE:
- OFF-ROAD
$799.99 -
FMF Q4 HEX Muffler 044426
FMF
$449.99The FMF Q4 HEX Muffler delivers measurable power gains across the entire RPM range while reducing weight and noise—letting you feel the performance improvement rather than just hear it. Its sophisticated multi-stage chamber design and proprietary packing...18211609- SKU:
- 18211609
- Availability:
- Ships Same Business Day
- Weight:
- 8.43 LBS
- PIPE MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- END CAP MATERIAL:
- STAINLESS STEEL
- WEIGHT IMPERIAL:
- 6.1 LB
- MUFFLER MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- MUFFLER
- UNITS:
- EACH
- MODEL:
- Q4 HEX
- MUFFLER COLOR/FINISH:
- RAW
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
$449.99 -
FMF PowerCore 4 HEX Muffler 044423
FMF
$399.99If you're looking to unlock measurable gains in power and torque while maintaining durability on the track or trail, the FMF PowerCore 4 HEX Muffler delivers both performance and longevity. This bolt-on muffler replaces restrictive stock designs with...18211606- SKU:
- 18211606
- Availability:
- Ships Same Business Day
- Weight:
- 8.12 LBS
- MODEL:
- POWERCORE 4 HEX
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- END CAP MATERIAL:
- STAINLESS STEEL
- UNITS:
- EACH
- MUFFLER COLOR/FINISH:
- RAW
- PIPE MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- MUFFLER MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- MUFFLER
$399.99 -
FMF Powercore 4 HEX Muffler 045645
FMF
$399.99If you're looking to extract real gains from your engine without compromising durability, the FMF Powercore 4 HEX delivers measurable increases in power and torque through superior flow dynamics. The Hi-Flo core design and enhanced sonic evacuation work...18211998- SKU:
- 18211998
- Availability:
- Ships Same Business Day
- Weight:
- 6.10 LBS
- END CAP MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERCORE 4 HEX
- PIPE MATERIAL:
- STAINLESS STEEL
- MUFFLER MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- MUFFLER
- UNITS:
- EACH
- MUFFLER COLOR/FINISH:
- RAW
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
$399.99 -
FMF Factory 4.1 RCT Muffler - Aluminum 044453
FMF
$649.99If you're looking to unlock measurable power gains across your entire RPM range without sacrificing reliability, the FMF Factory 4.1 RCT delivers. This muffler combines proven engineering with genuine weight savings, giving you a competitive edge whether...18211883- SKU:
- 18211883
- Availability:
- Ships Same Business Day
- Weight:
- 7.80 LBS
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- UNITS:
- EACH
- END CAP MATERIAL:
- CARBON FIBER
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- RAW
- MUFFLER MATERIAL:
- ALUMINUM
- PIPE MATERIAL:
- STAINLESS STEEL
$649.99 -
FMF Powercore 2.1 Muffler - Titanium 025254
FMF
$449.99The FMF Powercore 2.1 Titanium muffler is engineered for 4-stroke machines that demand consistent power delivery across the entire RPM range without sacrificing durability. Its large-diameter canister design extends packing life while reducing...18211915- SKU:
- 18211915
- Availability:
- Ships Same Business Day
- Weight:
- 4.14 LBS
- PIPE MATERIAL:
- TITANIUM
- UNITS:
- EACH
- END CAP MATERIAL:
- TITANIUM
- MODEL:
- POWERCORE 2.1
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- MUFFLER MATERIAL:
- TITANIUM
- PRODUCT NAME:
- SILENCER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
$449.99 -
FMF Factory 4.1 RCT Muffler - Anodized Titanium 045648
FMF
$649.99If you're serious about extracting maximum power from your machine while cutting unnecessary weight, the FMF Factory 4.1 RCT delivers measurable gains across the entire RPM range. Its compact design centralizes mass closer to the motor—improving handling...18212001- SKU:
- 18212001
- Availability:
- Ships Same Business Day
- Weight:
- 6.25 LBS
- PIPE MATERIAL:
- TITANIUM
- TYPE:
- SLIP-ON
- UNITS:
- EACH
- END CAP MATERIAL:
- CARBON FIBER
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- MUFFLER MATERIAL:
- TITANIUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- MUFFLER
$649.99 -
FMF Powercore 2.1 Shorty Muffler 025253
FMF
$239.99If you're serious about maximizing your bike's performance while keeping weight minimal, the FMF Powercore 2.1 Shorty Muffler is the benchmark exhaust system others are still chasing. Its lightweight titanium construction combined with a...18211914- SKU:
- 18211914
- Availability:
- Ships Same Business Day
- Weight:
- 2.85 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MUFFLER COLOR/FINISH:
- RAW
- MUFFLER MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- SILENCER
- STYLE:
- SHORT
- END CAP MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERCORE 2.1 SHORTY
- PIPE MATERIAL:
- STAINLESS STEEL
- TYPE:
- SLIP-ON
$239.99 -
Pro Circuit T-6 Slip-On Silencer Kawasaki KX250F 2020 0122025A
PRO CIRCUIT
$799.95The Pro Circuit T-6 Slip-On Silencer delivers measurable gains in power delivery and throttle response for your 2020 Kawasaki KX250F while shedding unnecessary weight. Its asymmetrical design optimizes exhaust scavenging and sound characteristics without...18211976- SKU:
- 18211976
- Availability:
- Ships Same Business Day
- Weight:
- 9.90 LBS
- MODEL:
- T-6
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MUFFLER MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- SILENCER
- TYPE:
- SLIP-ON
- END CAP MATERIAL:
- STAINLESS STEEL
$799.95 -
Pro Circuit T-6 Slip-On Silencer Husqvarna FE 350 2020-2022 0162035A
PRO CIRCUIT
$649.95A slip-on exhaust upgrade delivers measurable power gains and improved throttle response on your Husqvarna FE 350, while the removable spark arrestor keeps you competition-legal and trail-ready. Pro Circuit's T-6 combines precision engineering with...18212032- SKU:
- 18212032
- Availability:
- Ships Same Business Day
- Weight:
- 8.70 LBS
- MODEL:
- T-6
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- END CAP MATERIAL:
- STAINLESS STEEL
- TYPE:
- SLIP-ON
$649.95 -
Pro Circuit T-6 Slip-On Silencer for Kawasaki KLX230R 2020-2022 0122023A
PRO CIRCUIT
$512.95If you're running a KLX230R, factory exhaust is costing you power and adding unnecessary weight. The Pro Circuit T-6 slip-on delivers measurable gains in mid-range torque while cutting rotational mass—critical advantages whether you're tackling tight...18212014- SKU:
- 18212014
- Availability:
- Ships Same Business Day
- Weight:
- 7.90 LBS
- TYPE:
- SLIP-ON
- PIPE MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- END CAP STYLE:
- CONICAL
- MUFFLER MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- BASE COLOR:
- SILVER
- END CAP MATERIAL:
- STAINLESS STEEL
- MODEL:
- T-6
$512.95 -
Pro Circuit T-6 Slip-On Silencer for Kawasaki KLX300R 2020-2022 0122030A
PRO CIRCUIT
$512.95The Pro Circuit T-6 slip-on delivers measurable gains in mid-range power and throttle response for the KLX300R while keeping your bike street-legal and trail-compliant. A lightweight aluminum construction reduces unsprung weight and improves handling,...18212015- SKU:
- 18212015
- Availability:
- Ships Same Business Day
- Weight:
- 7.98 LBS
- END CAP STYLE:
- CONICAL
- MUFFLER MATERIAL:
- ALUMINUM
- PIPE MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- END CAP MATERIAL:
- STAINLESS STEEL
- TYPE:
- SLIP-ON
- BASE COLOR:
- SILVER
- MODEL:
- T-6
$512.95 -
Pro Circuit T-6 Stainless Slip-On Exhaust Honda CRF450X 2019-2024 0111945GXA
PRO CIRCUIT
$799.00The Pro Circuit T-6 slip-on exhaust unlocks measurable performance gains for your CRF450X by optimizing exhaust scavenging and shedding unnecessary weight. Unlike restrictive stock systems, the asymmetrical muffler design maximizes flow while the...18211968- SKU:
- 18211968
- Availability:
- Ships Same Business Day
- Weight:
- 9.50 LBS
- PRODUCT NAME:
- SILENCER
- MODEL:
- T-6
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- END CAP MATERIAL:
- STAINLESS STEEL
- MUFFLER MATERIAL:
- ALUMINUM
$799.00 -
Pro Circuit T-6 Slip-On Silencer KTM 250 SX-F 2019-2022 0151925A
PRO CIRCUIT
$649.95The Pro Circuit T-6 Slip-On Silencer delivers measurable gains in exhaust scavenging and throttle response for your 250 SX-F, while the stainless steel construction resists corrosion through seasons of aggressive trail and motocross use. If you're...18211934- SKU:
- 18211934
- Availability:
- Ships Same Business Day
- Weight:
- 8.40 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- END CAP MATERIAL:
- STAINLESS STEEL
- MUFFLER MATERIAL:
- ALUMINUM
- MODEL:
- T-6
- PRODUCT NAME:
- SILENCER
- UNITS:
- EACH
$649.95 -
Pro Circuit T-6 Slip-On Exhaust KTM 350 SX-F 2019-2022 0151935A
PRO CIRCUIT
$649.95The Pro Circuit T-6 Slip-On Exhaust delivers measurable gains in throttle response and mid-range power for your KTM 350 SX-F while shedding unnecessary weight. Built with stainless steel construction and a precision-tuned muffler, this bolt-on system...18211935- SKU:
- 18211935
- Availability:
- Ships Same Business Day
- Weight:
- 8.40 LBS
- END CAP MATERIAL:
- STAINLESS STEEL
- MODEL:
- T-6
- MUFFLER MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- SILENCER
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
$649.95 -
Pro Circuit T-6 Slip-On Exhaust Honda CRF450R 2019-2020 0111945A2
PRO CIRCUIT
$1,045.95The Pro Circuit T-6 Slip-On Exhaust delivers measurable power gains and refined throttle response for your CRF450R, while the lightweight construction means better acceleration and easier handling on technical terrain. Factory stock exhausts restrict...18211946- SKU:
- 18211946
- Availability:
- Ships Same Business Day
- Weight:
- 16.80 LBS
- MUFFLER MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- SILENCER
- MODEL:
- T-6
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- UNITS:
- PAIR
- END CAP MATERIAL:
- STAINLESS STEEL
$1,045.95
