Honda CRF 250 R 2011-2013, Part No. 06-095.FMF.F4AS FMF - 041437 - All new incorporating the latest in Resonance Chamber Technology. - Patented core shape lowers sound level while maintaining maximum power output. - Patented canister shape increases internal volume for more sound absorbing material. - Patented chamber design to enhance and refine exhaust pressure. - Factory Forward Engineering centralizes mass and is less prone to crash damage. - Tuned exhaust with optimized core specifications for each application.- Innovative rear endcap for simple installation of tuning tip inserts or spark arrestor. Configuration: Single Const: Titanium Finish: Blue Anodized Midpipe: Stainless Steel Endcap: Stainless Steel Spark Arrestor: Screen Insert (included) Quiet Insert: 94dB Insert (included) �