With over 35 years of development and racing heritage, the FMF Racing Fatty 025221 Gold Series pipe delivers broad, tractable power across the rev range for 2-stroke performance enthusiasts. Engineered using premium carbon steel with a durable nickel-plated finish, the Fatty smoothes and amplifies power delivery from low-end to over-rev, making it the go-to choice for competitive riders and enthusiasts alike. FMF’s Tru-Flo stamping ensures precision fitment and optimal exhaust flow, with compatibility for both FMF and stock silencers.

Features

• Broadened and smoothed power curve with improved throttle control
• Noticeable gains across the entire power band: increased low-end, midrange, and top-end
• Constructed from carbon steel and finished with durable nickel plating for corrosion resistance
• FMF Racing’s Tru-Flo stamping process guarantees accurate fit and maximum performance
• Can be paired with either FMF or OEM silencers (unless otherwise specified)
• O-rings included for proper sealing
• FMF’s most popular 2-stroke expansion chamber

Specifications

• Item ID: 025221
• Type: Pipes
• Carb Warning: No
• Weight: 3.0 lbs

Vehicle Fitment

GAS GAS

• MC 85 (2021–2024)

HUSQVARNA

• TC 85 (2018–2024)

KTM

• 85 SX (2018–2024)