On the XTZ1200 the engine is mounted as a stressed member, and the frame is designed to reduce rider fatigue over long distances. This is one reason that the main frame is made of steel, because steel offers both strength and flexibility. Steel is very good at absorbing road impacts. Because riders are very sensitive to the location of the crankshaft, this frame locates the crankshaft low and very close to the foot pegs. This makes the XTZ1200 feel lighter than it actually is and makes the bike easier to ride. The dual backbone tubes extend from the steering head on each side of the engine, and the engine is mounted low in the frame at the cylinder head and crankcase. This layout not only lowers the centre of gravity of the fuel tank, it leaves space at the front for the airbox and throttle bodies and complements the straight, downdraft intake system. Another benefit is easy access to the engine and its related parts for maintenance, a feature that mechanics will appreciate. Components located far from the centre of gravity, such as the rear frame, are made of lightweight aluminium.