Factory 4.1 RCT

Details: 

• RCT system (Resonance Chamber Technology) with patented silencer insert that minimizes noise emissions - without sacrificing performance
• The internal channels in the chambers of the RCT system increase the volume and provide more air outlet and more power
• Thanks to the FMF Factory Forward Engineering the exhaust is more stable and the weight has been shifted to the middle
• Various inserts or spark arrestors can be easily installed in the end cap by removing just four screws
• Complies with AMA and FIM noise emission guidelines
• Including 94 db QuietCore insert
• Silencer including spark arrester
• Made in the USA