Collection: FMF Factory 4.1 RCT, Megabomb, Powerbomb, Powercore 4, & Q4 4-Stroke Performance Exhaust – Moto-House MX
FMF 4-Stroke Performance Exhaust Systems, Mufflers, and Headers | Moto-House MX
At Moto-House MX, we are the go-to destination for performance parts, performance kits, and accessories for the FMF 4-Stroke exhaust lineup. With over 40 years of expertise in optimizing motocross and off-road bikes, our experienced team is dedicated to helping you take your FMF 4-Stroke vehicle setup to the next level.
The FMF 4-Stroke collection delivers the ultimate upgrade to improve performance on 4-stroke motorcycles, dirt bikes, enduro bikes, ATVs, and pit bikes, maximizing horsepower and torque across the entire RPM range. Our collection features top-tier hardware from FMF Racing — providing everything you need to fine-tune your bike's performance.
FMF 4-Stroke Mufflers & Headers Lineup
- Factory 4.1 RCT: FMF’s elite flagship muffler delivering massive power gains, crisp throttle response, and weight reduction.
- Powercore 4: High-end track and trail performance, incredible horsepower, and rugged durability without a premium price.
- Q4 Silencer: Engineered to meet strict off-road sound restrictions on public lands without choking out horsepower.
- Megabomb Header: Patented design mimicking a long header's low-end pull with a short header's top-end scream.
- Powerbomb Header: Uses a unique expansion module to increase exhaust flow and deliver a major mid-range torque boost.
Whether you're looking to boost engine power, improve handling, or enhance overall reliability, Moto-House MX has the performance parts and accessories you need. Our selection of FMF 4-Stroke upgrades ensures that your bike stays ahead of the competition on every ride.
The FMF 4-Stroke exhaust line optimizes performance on common machinery like the KTM 250SX, KTM 450SX, KTM 450EXC, Beta 480 RR, Yamaha YZ450F, Honda CRF250R, and Kawasaki KX450. This premium lineup competes directly with exhaust systems from brands like Pro Circuit and Yoshimura. Our performance packages are designed to keep your FMF 4-Stroke running out front of the competition while staying reliable and budget-friendly.
Shop trusted setups from FMF Racing — all available with fast shipping from our Central Florida location.
Explore our full collection of FMF 4-Stroke performance kits, parts, and accessories today and elevate your bike's performance with Moto-House MX.
Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. We are the best shop in Central Florida with lightning-fast shipping.
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FMF MegaBomb Head Pipe (Titanium) 045625 - Gas Gas / Husqvarna / KTM 450cc 2018-2023
Regular price $427.49 USDRegular price$474.99 USDSale price $427.49 USDSale -
FMF Megabomb Head Pipe (Titanium) 045689 - Beta 450 RX / RC 2024-2026
Regular price $427.49 USDRegular price$474.99 USDSale price $427.49 USDSold out -
FMF Mini Factory 4.1 Full Exhaust System 042380 — Kawasaki / Suzuki 110 2002-2025
Regular price $413.99 USDRegular price$413.99 USDSale price $413.99 USD -
FMF Q4 Hex Slip-On Muffler 042368 - Kawasaki KX450F / KX450X 2019-2022
Regular price $404.99 USDRegular price$449.99 USDSale price $404.99 USDSold out -
FMF Megabomb Head Pipe with Mid Pipe — 044449 Yamaha YZ250F, YZ250FX, and WR250F 2019-2026
Regular price $403.74 USDRegular price$424.99 USDSale price $403.74 USDSale -
FMF Megabomb Head Pipe with Mid Pipe (Stainless Steel) 044475 - Yamaha WR450F / YZ450F / YZ450FX 2023-2026
Regular price $403.74 USDRegular price$424.99 USDSale price $403.74 USDSale -
FMF Megabomb Head Pipe with Mid Pipe (Stainless Steel) 044439 - Yamaha YZ450F WR450F 2018-2019
Regular price $382.49 USDRegular price$424.99 USDSale price $382.49 USDSold out -
FMF MegaBomb Head Pipe (Stainless Steel) 045620 - Gas Gas / Husqvarna / KTM 250cc 2019-2023
Regular price $356.24 USDRegular price$374.99 USDSale price $356.24 USDSold out -
FMF Megabomb Head Pipe (Stainless Steel) 045692 - Triumph TF 250-C / TF 250-E / TF 250-X 2024-2026
Regular price $356.24 USDRegular price$374.99 USDSale price $356.24 USDSold out -
FMF 041426 Megabomb Header – 2007–2025 Honda CRF150R - Stainless Steel
Regular price $356.24 USDRegular price$374.99 USDSale price $356.24 USDSale -
FMF MegaBomb Head Pipe (Stainless Steel) 042338 - Kawasaki KX450F 2016-2017
Regular price $337.49 USDRegular price$374.99 USDSale price $337.49 USDSale -
FMF MegaBomb Head Pipe (Stainless Steel) 045624 - Gas Gas / Husqvarna / KTM 450cc 2018-2023
Regular price $337.49 USDRegular price$374.99 USDSale price $337.49 USDSale -
FMF MegaBomb Head Pipe (Stainless Steel) 041577 - Honda CRF450X 2019-2027
Regular price $337.49 USDRegular price$374.99 USDSale price $337.49 USDSale -
FMF MegaBomb Head Pipe (Stainless Steel) 041606 - Honda CRF250R 2022-2024
Regular price $337.49 USDRegular price$374.99 USDSale price $337.49 USDSale -
FMF MegaBomb Head Pipe (Stainless Steel) 042407 - Kawasaki KX250 / KX250X 2025-2026
Regular price $337.49 USDRegular price$374.99 USDSale price $337.49 USDSale -
FMF MPN 045697 2000-2023 Triumph S/S Megabomb Header
Regular price $337.49 USDRegular price$374.99 USDSale price $337.49 USDSale