High-performance heavy-duty two-stroke expansion chamber engineered to deliver robust, tractor-like bottom-end and midrange power for mid-90s steel-framed Honda CR250R 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: 78-1111
- Alternative Part Number: FMF 025003 / 1820-0082
- 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 |
| Honda | CR 250R | Two-Stroke Motocross / Off-Road | 1992–1996 |
TSO Garage Note
The ultimate armor upgrade for putting meaty bottom-end grunt into mid-90s steel-frame Honda CR250R builds. This heavy 18-gauge chamber broadens out low-end torque to help you hook up effortlessly in tight or slick conditions, while easily absorbing the brutal rock and stump impacts that would instantly crush a thin stock motocross pipe.
