2025 Ktm 390 Adventure R

Vehicle frequently stalls or engine stops suddenly. Engine will "knock" and suddenly stall when engaging the clutch while providing throttle to begin riding. It will stall when engaging the clutch to downshift into lower gears while coming to a stop. This has happened at busy roadways at red lights, stop signs, and even when slowing down to navigate a turn. Engine may stall while in neutral and throttle is applied. Typically a short rattle or what sounds like valves knocking, is followed by a backfire, prior to stalling. There is no way to prevent stalling/engine stopping unless RPM's are kept over 3,000. I have fallen over or crashed offroad several times, when navigating obstacles or negotiating tight turns or turn-arounds in the trails, dirt roads or forest. Bike stalled when attempting to navigate over a small log, resulting in bike crashing and pinning me underneath. Dealer performed update to most current fuel/mapping software but this did not make a difference.

When fully warmed up the engine will cut out the moment the throttle is applied, seemingly misfiring - sometimes 3 times in a row after restarting. Sometimes this will happen at low speed, either with a clang from early detonation or completely stalling the bike when riding at low rpm. Off-road - this is particularly dangerous when traversing obstacles as sudden loss of forward momentum will affect control of the motorcycle, sometimes in precarious places. On road, especially dangerous if the engine cuts out while accelerating from a stop into traffic. While this doesn’t often happen while riding on the road it has happened a few times in my experience.

Engine constantly stalls when coming to stop. It has stalled at stoplights and intersections when trying to takeoff. It’s also stalled when coming to a stop with the clutch in the engine dies. I have been riding motorcycles for 50+ years. It’s been to the dealer several times and it still does it. Install several times every time I take it for a ride.