The FMF Factory 4.1 RCT aluminum slip-on muffler is engineered for 2018–2026 Suzuki RM-Z450 motorcycles. Manufacturer part number 043364 and vendor part number 79-40628 identify this application-specific exhaust component. Built with FMF Resonance Chamber Technology, the muffler is designed to reduce exhaust sound while maintaining strong power output across the usable powerband.
The patented core shape and chamber design help refine exhaust pressure and optimize performance for the Suzuki RM-Z450. Its patented canister shape provides additional internal volume for sound-absorbing material, while FMF Factory Forward Engineering centralizes mass to help reduce vulnerability to crash damage. The tuned exhaust configuration uses application-specific core specifications for a precise fit and performance-focused design.
Feature: Aluminum canister with stainless steel mid-pipe for a balance of durability and reduced weight.
Feature: Carbon fiber rear end cap supports a clean, performance-oriented finish and simplifies access to tuning accessories.
Feature: Resonance Chamber Technology lowers sound levels while preserving maximum power output.
Feature: Patented chamber design enhances and refines exhaust pressure.
Feature: Rear end cap accepts tuning tip inserts or a spark arrestor for versatile use.
Feature: Includes a spark arrestor and wash plug.
Feature: Designed specifically for 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, and 2026 Suzuki RM-Z450 models.
FMF manufactures the Factory 4.1 RCT slip-on muffler for riders seeking application-specific exhaust performance and reliable off-road functionality. Verify the motorcycle model year and exhaust configuration before installation to ensure compatibility.
Features:
- Aluminum canister with stainless steel mid-pipe
- Carbon fiber rear end cap
- Resonance Chamber Technology reduces sound while maintaining power output
- Patented core and chamber designs refine exhaust pressure
- Factory Forward Engineering centralizes mass and helps reduce crash damage
- Application-specific tuned exhaust core
- Rear end cap accepts tuning tip inserts or a spark arrestor
- Includes spark arrestor and wash plug
- Fits 2018–2026 Suzuki RM-Z450 motorcycles
Fitment:
2018 Suzuki RM-Z450
2019 Suzuki RM-Z450
2020 Suzuki RM-Z450
2021 Suzuki RM-Z450
2022 Suzuki RM-Z450
2023 Suzuki RM-Z450
2024 Suzuki RM-Z450
2025 Suzuki RM-Z450
2026 Suzuki RM-Z450