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Motorbike exhausts

Complete exhaust systems

Full Line FMF Factory 4.1 RCT

NEW

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NEW

FMF Factory 4.1 RCT Full LineYAMAHA 450 YZ 450 F - 2026Ref : FMF00012A / 18202169

Recommended retail price:1 786,97 €?

1 572,50 ^€

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Description
Compatible motorbikes
Questions and answers

DescriptionFMF Factory 4.1 RCT Full Line

Product details :

Features

FMF Factory 4.1 RCT – Exhaust System (Manufacturer Ref: 044484)

The FMF Factory 4.1 RCT is an exhaust system designed for off-road use, aimed at demanding motocross riders. Completely constructed from titanium and machined to aerospace standards in the Southern California factory, it features FMF Resonance Chamber Technology™ both internally and externally. Its compact design brings the silencer closer to the engine for mass centralisation and reduced bulk, making it less exposed to impacts in case of a fall.

Materials: titanium collector and body, carbon fibre end cap
Finish: blue anodised silencer, black end cap
Configuration: single canister
Manufacturing: 100% production in California, according to FMF specifications

Universe: Motocross. Frequently associated models: YAMAHA YZ 450 F 70th Anniversary Edition (2026), YAMAHA YZ 450 F (2026).

Important note: this Factory 4.1 RCT system does not comply with FIM 2025 sound regulations. Suitable only for off-regulation use or appropriate track according to local laws.

Technical information :

Reference

FMF00012A / 18202169

Tip style

Conical

Units

Kit

Silencer Colour/Finish

Anodised Blue

Material of the tip

Carbon fibre

Silencer material