Bluebird frames use the same simple but very e ective suspension system as the Blackbird but delivers 130mm travel optimised for longer days on the trails. The rear axle spacing is 148x12mm Boost standard and takes both 27.5”+ or 29” size wheels. The advanced swingarm cage equipped with three Max type sealed bearings and strong 17mm diameter axle ensures a sti and strong frame. The higher placed pivot position o ers high pedalling e iciency and eliminates pedal-bob when climbing. The low BB position provides high stability in di icult terrain while the 66o head tube angle ensures a perfect riding control no matter how steep is the track. A construction using shock extension yoke makes it possible to keep a full length seat tube allowing room for the new breed of dropper seatpost.