The FMF Factory 4.1 RCT Exhaust System is designed to enhance performance and durability for Honda CRF250R and RX models. Featuring FMF Resonance Chamber Technology* both internally and externally, this exhaust system delivers improved exhaust flow and sound quality. Its innovative design incorporates a shorter overall length, making it more resistant to crash damage and better suited for aggressive riding conditions. The Factory 4.1 RCT positions the muffler closer to the motor, which helps to centralize mass and improve handling and balance during riding sessions. Constructed exclusively from aerospace-grade materials, this exhaust system meets stringent quality standards and ensures longevity and reliable performance. Manufactured entirely in Southern California, it guarantees precision craftsmanship and consistent quality control. The anodized finish combined with a carbon end cap adds a sleek, durable aesthetic to your bike, while the Megabomb design optimizes exhaust flow for increased power across the RPM range. Whether you're racing or riding for recreation, this exhaust system provides a significant upgrade to your motorcycle's exhaust efficiency and overall performance. Features: * FMF Resonance Chamber Technology* enhances exhaust flow and sound * Shorter overall length reduces crash damage susceptibility * Designed to move muffler closer to the motor for centralized mass * Constructed from aerospace-grade materials for durability * Anodized finish with carbon end cap for a sleek look * Megabomb design optimizes exhaust flow for increased power * Manufactured entirely in Southern California to ensure quality