Engine management system (EMS)
As well as controlling EFI parameters on the FE 350 Rockstar Edition, the Keihin EMS features selectable engine maps via the switch on the handlebar as well as traction control. Combined with the gear sensor, power delivery is tailored for each gear.
- Keihin EMS → smaller, lighter, and faster at processing engine data for more efficient engine management
- Gear sensor → specific engine maps for each gear
On the TE 300i Rockstar Edition, the EMS features an Electronic Control Unit (ECU), which is responsible for a number of functions. The sophisticated unit determines the ignition timing and the amount of fuel and oil injected into the engine. In addition, the EMS receives information from the throttle position sensor, ambient air and intake pressure sensors, as well as crankcase pressure and water temperature sensors, to adapt values and make corrections for automatic temperature and altitude compensation. This means there is no need to change carburettor jetting as in the past.
- 2-stroke EMS → modern engine management eliminating the need for jetting changes
Throttle body
The FE 350 Rockstar Edition features a 42 mm Keihin throttle body. The injector is positioned to ensure the most efficient flow into the combustion chamber. Ensuring optimal throttle response, the throttle cables are mounted directly without a throttle linkage, which provides more immediate throttle response and control.
- Throttle body → 42 mm, injector positioned for optimal flow, more immediate throttle response thanks to direct cable mounting
The TE 300i Rockstar Edition uses a 39 mm throttle body, which regulates the amount of air entering the engine via a butterfly valve, operated by dual throttle cables connected to the handlebar throttle assembly. Unlike 4-stroke throttle bodies, fuel is not introduced at this point, but rather 2-stroke oil is mixed with the air entering the engine to lubricate the crankshaft, cylinder, and piston. Additionally, a Throttle Position Sensor (TPS) relays airflow data to the ECU, which in turn calculates the amount of oil and fuel delivered to the engine. At the same time a bypass screw regulates the idling speed, and a cold start device opens a bypass providing more air for cold starts.
- 39 mm throttle body → regulates air flow, TPS relays airflow data
Exhaust system
Tailored specifically for each model using an innovative 3D design process, the TE 300i Rockstar Edition header pipe features advanced geometry and exceptional performance. Offering more ground clearance, it is less susceptible to damage while a corrugated surface makes the header pipe more durable, reducing possible damage from rocks and other enduro hazards. The 2-stroke muffler also features an aluminium mounting bracket and advanced internal construction for excellent noise damping and weight saving, without sacrificing power.
The FE 350 Rockstar Edition exhaust system is expertly designed to deliver class-leading performance at the lowest possible weight. The header pipe is manufactured in two pieces which allows for the system to be removed while the rear shock remains in place. Further innovation allows for a short, compact silencer which offers reduced noise levels. The component is crafted from lightweight aluminium and is stylishly finished in a black coating that highlights its premium quality.
- Corrugated surface on TE 300i Rockstar Edition→ more durable against damage
- Header joining position on FE 350 Rockstar Edition → remove header pipe without removing rear shock
