Design
Full sound, low noise
Turbinecore 2.1 is engineered to produce full sound while keeping the noise level low. The result is an exhaust note that stays strong and present, while remaining controlled for its intended motocross-focused design.
KTM · PowerParts · Exhaust systems
The KTM FMF Turbinecore 2.1 Silencer is a KTM PowerParts exhaust component built for 2-stroke offroad use, developed specifically with motocross in mind. Designed to deliver full sound while maintaining a low noise level, it’s a focused upgrade for riders who want strong character from the exhaust note without unnecessary bulk.
This silencer (part number A44005979004) features a Black finish and an aluminium outer sleeve. It’s designed for a perfect fit and straightforward installation, and it includes an internal spark arrestor. For a matched exhaust setup, combination with the FMF Fatty Pipe is recommended. See the specifications below for additional details.
Design
Turbinecore 2.1 is engineered to produce full sound while keeping the noise level low. The result is an exhaust note that stays strong and present, while remaining controlled for its intended motocross-focused design.
Construction
An outer sleeve made from aluminium helps keep the silencer lightweight. This material choice supports performance-minded builds while maintaining the durable construction expected from KTM PowerParts exhaust components.
Installation
Built around a perfect-fit design, this silencer is intended to go on easily and cleanly. It’s a practical choice for riders who want a straightforward installation path without sacrificing a precise exhaust fit.
Performance
Developed specifically for motocross-use, the FMF Turbinecore 2.1 Silencer is tailored to the demands of 2-stroke offroad riding. Its design balances a full exhaust sound with a low noise level, aiming to deliver the kind of crisp character riders look for while staying controlled. For riders planning a coordinated exhaust setup, KTM recommends combining this silencer with the FMF Fatty Pipe.
Design
This silencer features an internal spark arrestor integrated into its design. That built-in feature adds functionality beyond sound and fitment, making the Turbinecore 2.1 a purpose-built option for offroad riders looking for a silencer configuration that includes spark control as part of the system.
| Part Number | A44005979004 |
|---|---|
| Product Line | KTM PowerParts |
| Category | Exhaust systems > 2-stroke Offroad |
| Colour | Black |
| Materials | Aluminium |
| Approvals | AMA Amateur, CCCUO |
| Model — Model Years |
|---|
| 250 EXC — 2024–2025 |
| 250 EXC Champion Edition — 2025 |
| 250 EXC Six Days — 2024–2025 |
| 250 SX — 2023–2027 |
| 250 XC — 2023–2027 |
| 250 XC-W — 2024–2027 |
| 300 EXC — 2024–2027 |
| 300 EXC 6Days — 2026 |
| 300 EXC 6DAYS — 2027 |
| 300 EXC Champion Edition — 2025–2026 |
| 300 EXC Hardenduro — 2024–2027 |
| 300 EXC Six Days — 2024–2025 |
| 300 SX — 2023–2027 |
| 300 XC — 2023–2027 |
| 300 XC-W — 2024–2027 |
| 300 XC-W Champion Edition — 2025 |
| 300 XC-W Hardenduro — 2024–2027 |
Vehicle compatibility as captured from KTM for article number A44005979004.
KTM approval notice: AMA Amateur racing sound compliant.
KTM approval notice: Closed Course Competition Use Only.
