High-performance heavy-duty two-stroke expansion chamber engineered to deliver robust, tractor-like bottom-end and midrange power for Kawasaki's high-revving 250cc motocross and off-road applications. Constructed from tough 18-gauge carbon steel to withstand severe rock strikes, heavy trail abuse, and extreme thermal cycling while significantly improving low-end torque and throttle response.
Specs & Details
- Manufacturer Part Number: 78-1290
- Alternative Part Number: FMF 022068 / 1820-0329
- Component Type: 2-Stroke Expansion Chamber / Exhaust Pipe
- Material & Construction: Heavy-gauge 18-gauge carbon steel with a nickel-plated finish
Two-Stroke Vehicle Fitment
| Make | Model | Engine Type | Year Range |
| Kawasaki | KX 250 | Two-Stroke Motocross / Off-Road | 2003 |
TSO Garage Note
The ultimate armor upgrade for transforming the aggressive 2003 KX250 powerband into a tractable woods or off-road weapon. This heavy 18-gauge chamber beefs up bottom-end torque to help you hook up in slick or technical terrain, while easily absorbing the brutal rock and stump impacts that would instantly crush a stock motocross pipe.
