Our 2437 open bore adapter is used to press 24x37 sealed bearings into bottom bracket cups, and direct fit frames like Trek BB90. The adapter is machined with one step at 24mm OD, which fits into the center of the sealed bearing.

• Installs: 24x37 bearing
• Inner Step Outer Diameter: 23.8mm
• Outer Diameter: 36.8mm
• Thru Hole Diameter: 0.387" (9.8mm)
• Inner hole sized to fit 3/8" ACME threaded rod
• Compatible with PRESS-1 or PRESS-4 handles/rod
• Machined, red anodized aluminum
• Sold individually (2 drifts required for some installations)