Industry Nine A318 stem (Purple) (31.8mm Clamp) (30mm) (8°)

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When quality and precision are top priority, I9 is the brand. The A318 stem is machined, anodized and assembled entirely in Asheville, NC. Industry Nine controls every stem of the process - from raw material to machining to anodizing to assembly. The 'A' in the A318 name comes from the A-axis of the five-axis machining used to manufacture the stem body and faceplate. 


  • American-made in Asheville, North Carolina
  • Increased strength and stiffness in the cockpit

Bar Diameter: 31.8mm
Steerer Diameter: 1-1/8" (28.6mm)
Length/Reach: 30mm, 40mm, 50mm
Stem Angle: 5°, 6°, 8°
Stack Height: 40mm
Material: Aluminum
Weight: 136g (40mm)
Color: Purple

This product was added to our catalog on August 14, 2019