Full Exhaust System FMF Factory 4.1 — Yamaha TT-R 110 E 2008–2026, titanium muffler (4T)

The FMF Factory 4.1 is a four-stroke silencer focused on power across the range and on the lowest possible weight — it's among the lightest mufflers available. Factory Forward Engineering centralises mass and improves handling. It can be fitted with performance tuning inserts and a spark arrestor module. Fits: Yamaha TT-R 110 E (2008–2009, 2011–2019, 2021–2026). Specifications — muffler material: Titanium, pipe material: Stainless Steel, end cap material: Stainless Steel, finish: Anodized, Titanium. Note: does not meet the 2025 FIM sound limit — intended for practice and closed courses, not for FIM-sanctioned racing. Spark arrestor included. QuietCore 94 dB insert included. Delivery 5–8 working days. SKU: 044468.