The Husqvarna 550XP Mark II has several innovative features, perfect for tree care professionals and skilled landowners. X-Torq technology provides more power where you need it, with up to 20% less fuel consumption and 75% less exhaust emission.
 
Features:
SmartStart X-Torq engine with  50.1сc and 3.75hp.
20-inch bar length.
RevBoost for rapid acceleration and higher chain speed.
AutoTune gives optimal engine performance through automatic engine setting.
Adjustable oil pump allows you to control oil flow depending on application and weather conditions.
Quick release air filter and time saving quick release air filter cover.
Side chain tensioning is quick and convenient. 
Low vibrations to reduce arm fatigue and rubber grip for safety.
Inertia activated chain brake.
Air Purge removes air from carburetor and fuel system for an easy start.
Combined choke/stop control for easy start and less risk of engine flooding.
Flip up tank cap, magnesium crank case, snap lock cylinder cover, and visible fuel level.
Forged three-piece crankshaft.
Felling marks for felling precision. 
11.7 lbs.
Two year factory warranty.