The Enduro Engineering 40-4021 Spark Arrestor End Cap is a practical replacement and performance-focused upgrade for select Beta RR and RE two-stroke motorcycles. This USFS-approved spark arrestor end cap is designed for riders who need compliant exhaust protection without replacing the complete silencer. It fits 2021–2023 Beta 250 RR and 300 RR models, including applicable 2T and RE versions.
Engineered by Enduro Engineering and supplied under manufacturer and vendor part number 40-4021, this end cap is designed to deliver maximum performance. In testing, the product produced no measurable power loss compared with the original stock end cap, helping preserve the motorcycle’s intended power delivery while adding spark arrestor functionality.
Feature: USFS-approved spark arrestor end cap for compatible Beta motorcycles.
Feature: Cost-effective alternative to replacing the complete silencer.
Feature: Designed for strong performance with no tested power loss compared with the stock end cap.
Feature: EE Screen spark arrestor design simplifies maintenance and servicing.
Feature: Removable screen allows replacement or cleaning by removing two bolts.
Feature: Screen may be removed for closed-course riding where permitted.
Fitment includes 2021 and 2022 Beta 250 RR 2T, Beta 300 RR 2T, Beta 250 RR RE, and Beta 300 RR RE models, plus 2023 Beta 250 RR 2T and Beta 300 RR 2T motorcycles. Verify the exact model and exhaust configuration before installation. Professional installation is recommended, and riders should follow all applicable USFS, trail, track, and local riding-area requirements.
Features:
- USFS-approved spark arrestor end cap for compatible Beta motorcycles
- Cost-effective alternative to replacing the complete silencer
- Designed to maintain performance with no tested power loss compared with the stock end cap
- EE Screen design allows simple maintenance and servicing
- Removable screen can be accessed by removing two bolts
- Screen removal is suitable for closed-course riding where permitted
Fitment:
2021 Beta 250 RR (2T)
2021 Beta 250 RR (RE)
2021 Beta 300 RR (2t)
2021 Beta 300 RR (RE)
2022 Beta 250 RR (2T)
2022 Beta 250 RR (RE)
2022 Beta 300 RR (2t)
2022 Beta 300 RR (RE)
2023 Beta 250 RR (2T)
2023 Beta 250 RR (RE)
2023 Beta 300 RR (2t)
2023 Beta 300 RR (RE)
2024 Beta 250 RR (2T)
2024 Beta 300 RR (2t)