The FMF Fatty Expansion Chamber Pipe is designed to deliver an all-around power increase throughout the power range of the KTM 65 SX. Manufacturer part number 025151 and vendor part number 78-1508 identify this performance exhaust component, engineered for riders who want stronger, more usable power across the engine’s operating range.
Feature: The pipe is electro-nickel plated for a durable, non-chip finish that resists discoloration during normal use. The factory pipe is excluded from this coating and features hand-pounded welds for a works-inspired appearance. The Fatty configuration is intended to provide balanced performance gains rather than concentrating power exclusively at low or high engine speeds.
Feature: The FMF Fatty pipe is designed to fit KTM 65 SX models from 2009 through 2015, including the 2009, 2010, 2011, 2012, 2013, 2014, and 2015 model years. Confirm the motorcycle model and year before installation to ensure proper fitment. This pipe is suited to motocross and off-road applications where broad power delivery and responsive acceleration are desired.
FMF is recognized for developing performance exhaust systems for off-road motorcycles. The 025151 Fatty pipe offers a practical upgrade for KTM 65 SX riders seeking improved engine performance throughout the powerband while maintaining the fitment of a model-specific expansion chamber.
Features:
- All-around power increase throughout the engine’s power range
- Electro-nickel-plated finish resists chipping and discoloration
- Fatty configuration provides balanced power delivery
- Model-specific fitment for KTM 65 SX motorcycles from 2009 through 2015
- FMF manufacturer part number 025151
- Vendor part number 78-1508
Fitment:
2009 KTM 65 SX
2010 KTM 65 SX
2011 KTM 65 SX
2012 KTM 65 SX
2013 KTM 65 SX
2014 KTM 65 SX
2015 KTM 65 SX