FMF Factory 4.1 RCT Stainless Full Exhaust w/ Carbon End Cap - 23-25 YZ450F

Fitment:

2024-2026 WR 450F

2023-2025 YZ 450F

2024-2026 YZ 450FX

FMF Factory 4.1 RCT Stainless Full Exhaust – Yamaha YZ450F / YZ450FX / WR450F

The FMF Factory 4.1 RCT Full Exhaust System delivers increased horsepower, improved throttle response, and race-proven performance for motocross and off-road riding. Featuring FMF's Resonance Chamber Technology (RCT), a stainless steel MegaBomb header, lightweight aluminum muffler, and carbon fiber end cap, this exhaust system is engineered for optimized power delivery and reduced weight.

Features

• Resonance Chamber Technology (RCT) optimizes exhaust performance

• Stainless steel MegaBomb header and mid-pipe

• Lightweight aluminum muffler with carbon fiber end cap

• Shorter muffler design improves mass centralization

• Rapid Tuning System (RTS) for exhaust tuning

• Includes spark arrestor screen and quiet insert

• Manufactured in the USA

Notice:Closed Course Use Only
Item ID: 044477
Type: System
Configuration: Single
Const: Aluminum
Finish: Gray Anodized
Midpipe: Stainless Steel
Endcap: Carbon
Spark Arrestor: Screen Insert (included)
Carb Warning: no
Quiet Insert: Meets AMA Professional Sound Requirements
Header Const: Stainless Steel
Header Type: MegaBomb
Weight: 9.5 lbs.