The Promax Banger BMX Stem in black is a high - quality front - load stem. It features a unique design that can be used with either side up, offering a 5 - millimeter drop or rise. Made from top - grade 6061 - T6 aluminum through cold forging and then CNC machined, it has an enhanced shape and reduced weight. Available in 48 - millimeter and 53 - millimeter extensions, it uses M6 bolts. Technical specs include a 31.8mm bar clamp diameter, a 1 - 1/8' steerer clamp diameter, a stack height of 30.5mm, a stem angle of 0 degrees, and it weighs only 269 grams.
Using this Promax Banger BMX stem is easy. First, make sure your bike's steerer tube diameter matches the 1 - 1/8' steerer clamp diameter of the stem. Then, attach the stem to the steerer tube using the M6 bolts provided. You can choose to use the stem with either side up depending on whether you want a 5 - millimeter drop or rise. When riding, be careful not to apply excessive force suddenly as it may cause damage. For maintenance, regularly check the tightness of the bolts. Clean the stem with a mild soap and water solution, and dry it thoroughly to prevent rust. If you notice any signs of wear or damage, replace the stem as soon as possible.
