The FMF Gnarly Pipe, manufacturer and vendor part number 025270, is a heavy-duty exhaust expansion chamber designed for select Beta two-stroke motorcycles. Built for late-model 200cc-and-up applications, this Gnarly pipe is engineered to provide increased low-end torque and dependable performance for off-road riding. Its durable construction makes it a practical upgrade for riders who need responsive power and added resistance to the demands of technical terrain.
All FMF pipes are electro-nickel plated for a non-chip finish that helps resist discoloration during normal use. The factory pipe section is excluded from this coating and features hand-pounded welds. The Gnarly model uses a heavy-duty 18-gauge steel body to help withstand impacts, vibration, and the rigors of off-road riding while maintaining reliable exhaust performance.
Feature: Heavy-duty Gnarly design tuned for a strong low-end torque increase.
Feature: Electro-nickel-plated finish resists chipping and discoloration.
Feature: Heavy-duty 18-gauge steel body supports demanding off-road use.
Feature: Application-specific fitment for Beta 250 RR, Beta 300 RR, and Beta 300 RX two-stroke models.
The FMF Gnarly Pipe fits 2020-2023 Beta 250 RR 2T models, 2020-2023 Beta 300 RR 2T models, and 2021-2022 Beta 300 RX 2T models. Confirm the motorcycle year, model, and two-stroke configuration before installation to ensure proper fitment. This FMF exhaust component is supplied under part number 025270 and is intended as a direct application-specific performance replacement or upgrade for compatible Beta motorcycles.
Features:
- Heavy-duty Gnarly design tuned for increased low-end torque
- Electro-nickel-plated finish helps resist chipping and discoloration
- Heavy-duty 18-gauge steel body built for demanding off-road riding
- Fits select 2020-2023 Beta 250 RR 2T and Beta 300 RR 2T models
- Fits select 2021-2022 Beta 300 RX 2T models
Fitment:
2020 Beta 250 RR (2T)
2020 Beta 300 RR (2t)
2021 Beta 250 RR (2T)
2021 Beta 300 RR (2t)
2021 Beta 300 RX (2T)
2022 Beta 250 RR (2T)
2022 Beta 300 RR (2t)
2022 Beta 300 RX (2T)
2023 Beta 250 RR (2T)
2023 Beta 300 RR (2t)
2023 Beta 300 RX (2T)
2024 Beta 250 RR (2T)
2024 Beta 300 RR (2t)
2024 Beta 300 RX (2T)
2025 Beta 250 RR (2T)
2025 Beta 300 RR (2t)