Enduro Bearings ACB4545 405495 Stainless Steel Angular Headset Bearing

Enduro ACB 4545 405495 SS angular-contact headset bearing in corrosion-resistant 440C stainless steel. Check the measurements and bearing position on your bike before ordering.

Specifications

• Inner diameter: 40.5 mm
• Outer diameter: 49.5 mm
• Width: 6.5 mm
• Contact angle: 45° × 45°
• Material: 440C stainless steel balls and races
• Enduro model: ACB 4545 405495 SS
• Supplier SKU: EBHSACB4545405495

Reported compatible bike models

This bearing size is listed for selected Specialized Tarmac SL7, Tarmac SL8, Aethos and Venge models. Fitment can vary by model year, frame generation and whether the bearing is used in the upper or lower headset position. Some Venge generations use this size only in a specific position.

Before ordering: compare the dimensions and 45° × 45° contact angles with the bearing being replaced, and confirm the required headset position for your exact bike. Matching dimensions alone do not guarantee fit if the bearing seat or position differs.

Stainless steel construction

The 440C stainless steel balls and races provide enhanced corrosion resistance. Enduro uses LLB seals and CRC marine grease to help protect the bearing from moisture and contamination.

Sold individually.