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This product has been discontinued

Promax - Impact Stem

Product Code: PROMAX-IMPACT-STEM
This product is no Longer Available

Unfortunately this product has been discontinued by the manufacturer and is no longer available.

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Promax - Impact Stem

Impact stems have a 45-degree top-load clamp design for BMX racing and freestyle. Available with 48- and 53-millimeter extensions, they are cold forged from the highest quality 6061-T6 aluminum then CNC machined to refine the shape and further reduce weight.

The "open" design keeps weight low (260 grams/9.2 ounces in a 48-mm extension and 265 grams/9.3 ounces in a 53-mm extension), while maintaining plenty of strength and ensuring your bars stay put.


  • Fits 7/8" (22.2mm)  Handlebars
  • Fits 1 1/8" Steer Tube