Promax Impact BMX Stem - 53mm Top Load Blue MFPN=401309901 Utilizes a premium direct mount

Utilizes a premium direct mount CNC machined aluminum narrow-wide 3-Bolt chainring that provides chain retention and smooth pedaling

32mm straight wall steel chassis

Visible from up to 1500 ft away

Shifting ramps and stainless steel pins on outer rings

Promax Impact BMX Stem - 53mm Top Load Blue MFPN=401309901 Utilizes a premium direct mountThe 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 Stem Type Top Load Stem Angle (deg) 0 Length 53 Rise 5 Reach 53 Bar Clamp Diameter (mm) 22. 2 Color Blue Weight 278 Defined Color Blue Steerer Clamp Diameter 1 1 8" Stack Height 30. 5 Size 53Mm