Fatty Exhaust Pipe 00-03 KTM SX 125 - FMF 025019

The FMF Racing Fatty 025019 exhaust system is engineered from over 35 years of competitive racing expertise to deliver superior, race-proven performance for two-stroke motorcycles. This Gold Series pipe is designed to broaden and smoothen the power curve, generating robust increases across the entire power band—from low-end response to enhanced mid-range and impressive over-rev. Constructed from carbon steel and finished with nickel plating for maximum durability, the Fatty delivers more tractable power and responsive throttle control for all riding conditions.

Features

• Race-proven design offering power gains throughout the entire power band
• Broadens and smoothens power delivery for improved throttle response and tractability
• Manufactured using FMF Racing’s Tru-Flo stamping process for a precise fit and optimal performance
• Can be paired with FMF or stock silencer (unless otherwise specified)
• Nickel-plated carbon steel construction for lasting durability and corrosion resistance
• O-rings included for secure installation
• FMF Racing’s most popular two-stroke pipe option

Specifications

• Item ID: 025019
• Type: Pipes
• Carb Warning: No
• Weight: 3.4 lbs

Vehicle Fitment

KTM

• 125 SX (2000–2003)