The FMF Factory 4.1 RCT slip-on muffler is a replacement exhaust silencer for compatible Ducati Desmo450 motorcycles. It fits to either the original header or an FMF header and is designated for closed-course use only.

Features

• Resonance Chamber Technology (RCT) is incorporated internally and externally.
• Shorter design positions the muffler closer to the engine to help centralise mass and reduce exposure to crash damage.
• Rapid Tuning System (RTS) allows exhaust inserts to be changed for tuning.
• Includes an insert-type screen spark arrestor.

Specifications

• Muffler body: aluminium.
• Midpipe: stainless steel.
• End cap: carbon.
• Finish: grey-anodised.

Cross-Reference OEM Part Numbers

• FMF: 045713.

Vehicle Fitments

• Ducati Desmo450 MX: 2026.
• Ducati Desmo450 EDX: 2026.