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Promax Impact Stem

The Impact is our top-load BMX stem. They come in 40, 48, 53 and 60 millimeter extensions and 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, while maintaining plenty of strength and ensuring your bars stay put.

Available in anodized red, blue, gold and matte black with laser-etched graphics. Meets or exceeds ENBMX standards.

48mm and Bigger are 1 1/8th Inch, 40mm and smaller are 1 Inch.   

  • 48mm: 272 grams
  • 53mm: 278 grams
  • 60mm: 295 grams