The Pro Circuit R-304 Silencer is a compact, performance-focused exhaust component designed for closed-course racing applications. Its compact design helps deliver strong performance gains for riders seeking responsive power and race-ready exhaust performance. This silencer is intended for competition use only and is not designed for public-road operation.
Part number 1152585 uses hex-head screws to secure the inlet cap, making removal quick and convenient when service or repacking is required. The serviceable design simplifies routine maintenance and allows efficient repacking to help maintain consistent performance during repeated racing use. For proper fitment and exhaust-system compatibility, the R-304 Silencer must be used with the applicable Pro Circuit pipe or stock pipe.
This Pro Circuit silencer fits select 2025 85cc motocross models, including the Husqvarna TC 85 in both 17/14 and 19/16 configurations, KTM 85 SX in the 17/14 configuration, and GasGas MC 85 models in both 17/14 and 19/16 configurations. Verify the motorcycle model, wheel-size configuration, and existing exhaust pipe before installation. Professional installation or inspection is recommended to ensure correct mounting and secure hardware placement.
Features:
- Compact R-304 design supports strong performance gains
- Designed for closed-course racing use only
- Hex-head screws allow easy inlet-cap removal
- Serviceable construction simplifies quick silencer repacking
- Must be used with a compatible Pro Circuit pipe or stock pipe
- Fits 2025 Husqvarna TC 85, KTM 85 SX, and GasGas MC 85 models in specified wheel-size configurations
- Brand: Pro Circuit
- Manufacturer and vendor part number: 1152585
Fitment:
2025 Gas-Gas MC 85 17/14
2025 Gas-Gas MC 85 19/16
2025 Husqvarna TC 85 (17/14)
2025 Husqvarna TC 85 (19/16)
2025 KTM 85 SX (17/14)