Stable, Low-Friction Steering for Semi-Integrated Headsets
Description
Description
The Blackbearing ZS55/40 Lower Headset Bearing is designed for riders who demand precision, stability and smooth steering performance. Crafted for semi-integrated headset systems, it ensures a secure interface between the frame and fork for confident handling on any terrain.
Optimized for 1-1/2" Forks: With a 40mm fork steerer diameter and 55mm frame diameter, this bearing fits modern frames using 1-1/2" lower headset configurations. The sizing ensures perfect alignment, improved rigidity and consistent steering control.
SHIS Standard ZS55/40 Compatibility: Engineered according to the SHIS ZS55/40 standard, it provides a direct fit for semi-integrated (Zero Stack) headsets. This makes it a reliable replacement for original bearings in high-performance road, gravel and MTB setups.
Precision-Built for Performance: Constructed from premium-grade materials, the ZS55/40 bearing ensures low friction and smooth rotation under varying loads. The precision machining enhances fit accuracy, reducing play and improving steering response.
Fully sealed against moisture and dirt, it resists corrosion and contamination, ensuring long-lasting durability. The Blackbearing ZS55/40 Lower Headset Bearing delivers a perfect combination of strength, protection and refined steering feel.
Features
Features
Specifications
Specifications
Shipping Policy
Shipping Policy
We ship across India with free shipping on orders above ₹2,000 (₹99 for orders below ₹2,000). Cash on Delivery is available up to ₹20,000, with additional COD fees based on order value. Orders typically arrive within 3–6 working days, though delays may occur.
Note: Most Shimano products may take longer to ship. View full shipping policy
Returns & Refunds
Returns & Refunds
Here's a quick overview of our return and refund policy:
- 7-Day Return Window: You can initiate a return within 7 days of receiving your product.
- Eligibility: Items must be unused, in original condition, with all tags and packaging. Only select items like apparel (helmets, jerseys, gloves, etc.) are eligible.
- Non-Returnable Items: Wetsuits and items discounted over 5% are not eligible for returns.
- Compatibility Issues: Returns are not accepted for compatibility-related issues unless the product description on our website was incorrect. If you're unsure, please contact us before ordering.
- Shipping & Processing: Return shipping is to be arranged by the customer. No pickups available.
- Refund Options: Choose between exchange, store credit, or monetary refund (after deductions for shipping and transaction fees).
- Order Cancellations: Only possible before the order is processed.
For full details, visit our Return & Refund Policy page.


