The shape of the handlebars changes the riding position. It impacts both comfort and performance.
A Sport-style handlebar offers a rather forward-leaning position, ideal for developing muscular power. It is best suited for a muscle-powered version of the bike.
A Comfort-style handlebar offers a more upright position, commonly found on a traditional city bike.
The Klunker model is an intermediate between "comfort" and "sport." It is both wide and relatively straight but with a significant rise, offering a rather upright riding position. Additionally, it brings a BMX / Moto X touch that perfectly matches the frame's style.
Width:
The Klunker Hold My Beer model is a variation of the Klunker model. Excessive alcohol consumption is dangerous for your health ;-)