Fatty Exhaust Pipe 90-91 Kawasaki KX 125 - FMF 020039

FMF Racing’s Fatty Gold Series pipe leverages more than 35 years of racing expertise to deliver broad, race-proven performance gains. Purpose-built to widen and smooth the power curve, the Fatty provides more tractable power with boosted output across low, mid, and over-rev RPMs. Constructed from robust carbon steel with a nickel-plated finish, this exhaust is designed to withstand demanding conditions while ensuring precise fitment and enhanced throttle control. Compatible with both FMF and stock silencers, the Fatty is the most popular choice for two-stroke riders seeking improved performance across all riding disciplines.

Features

• Expands and smooths the power curve for broad, consistent performance
• Increases power across the entire power band: low-end, mid-range, and top-end
• Enhanced throttle control and tractability for improved rideability
• Manufactured from carbon steel with a durable nickel-plated finish
• Tru-Flo stamping process ensures precise fit and optimised flow characteristics
• Compatible with FMF or stock silencers
• Includes O-rings for simplified installation
• Popular selection among two-stroke enthusiasts

Specifications

• Item ID: 020039
• Type: Pipes
• Weight: 3.3 lbs
• Carb Warning: No

Vehicle Fitment

Kawasaki

• KX125 (1990–1991)