Factory 4.1 SL Exhaust Silencer 06-13 Yamaha 250 450 WR YZ F - FMF 044235
FMF Racing's Factory 4.1 SL Slip-On exhaust delivers elite race-proven performance with proven horsepower increases. It is constructed from lightweight titanium with a striking blue anodised finish. The exhaust features a high-strength stainless steel midpipe and endcap for enhanced durability. This slip-on configuration offers quick installation and optimised performance across the RPM range. It includes a 94dB quiet insert and a spark arrestor screen insert for sound regulation and versatility. This product is designed for closed-course use only. Item ID: 044235. Type: Slip-On. Configuration: Single. Construction: Titanium. Finish: Blue Anodised. Midpipe: Stainless Steel. Endcap: Stainless Steel. Spark Arrestor: Screen Insert (included). Quiet Insert: 94dB Insert (included). Weight: 5.2 lbs (2.36 kg). Carb Warning: No.
- SKU
- 06-1669.FMF.FSA
- Brand
- FMF Exhausts
- Availability
- Out of Stock
FULL DESCRIPTION
FMF Factory 4.1 SL Exhaust Silencer
The FMF Factory 4.1 SL Slip-On exhaust system is engineered for off-road and motocross riders seeking peak performance and significant power gains. Built with advanced technology derived from years of racing experience, this system offers a substantial upgrade for your motorcycle's exhaust.
Key Features:
- Elite Performance: Delivers race-proven horsepower increases across the RPM range.
- Premium Construction: Crafted from lightweight titanium for durability and reduced weight.
- Striking Finish: Features a vibrant blue anodised plating for a distinctive look.
- Robust Components: Includes a high-strength stainless steel midpipe and endcap for enhanced longevity.
- Versatile Design: Slip-on configuration allows for straightforward installation and removal.
- Sound and Safety: Comes equipped with a removable 94dB quiet insert for noise regulation and a spark arrestor screen insert for safety.
- Optimised for Competition: Designed and intended for closed-course competition use only.
Specifications:
- Type: Slip-On Exhaust Silencer
- Configuration: Single
- Material: Titanium
- Finish: Blue Anodised
- Midpipe Material: Stainless Steel
- Endcap Material: Stainless Steel
- Included Accessories: 94dB Quiet Insert, Spark Arrestor Screen Insert
- Weight: Approximately 5.2 lbs (2.36 kg)


