The Impact is a top-load BMX stem, cold forged from the highest quality 6061-T6 aluminum then CNC machined to refine the shape and further reduce weight.
- CNC-machined 6061-T6 aluminum
Manufacturer Promax
Manufacturer Part Number ST21-0BA73S48-SL
UPC 4711103651315
Model Promax Impact BMX Stem
Stem Type
Top Load
Stem Angle (deg)
0
Length
48
Rise
5
Reach
48
Bar Clamp Diameter (mm)
22.2
Color
Silver
Weight
242
Defined Color
Silver
Steerer Clamp Diameter
1-1/8"
Stack Height
30.5