Factory Fatty Exhaust Pipe 99-26 Yamaha YZ 250 - FMF 024056

The Factory Fatty 024056 is designed to evoke the revered “works” or cone-style pipes once utilised by professional factory race teams. Engineered with premium craftsmanship and advanced materials, the Factory Fatty offers a broader, smoother power curve, delivering power gains across the entire rev range—from boosted low-end and mid-range to heightened over-rev. Ideal for diverse riding needs, this exhaust system enhances both response and overall engine performance.

Features

• Constructed with lightweight 20-gauge steel body for reduced weight
• 19-gauge steel header for strength and durability
• Hand-pounded seams deliver smooth flow transitions
• O-rings included for effective sealing (on most models)
• Broadens and smoothes power curve for overall performance gains
• Delivers more low-end, mid, and top-end (over-rev) power
• Designed with “factory works” pipe heritage
• Item ID: 024056
• Type: Pipes
• Carb Warning: no
• Weight: 5.0 lbs

Specifications

• Body material: 20-gauge steel
• Header material: 19-gauge steel
• Includes O-rings
• Weight: 5.0 lbs

Vehicle Fitment

Yamaha

• YZ250 (1999–2026)