Enduro
Enduro ACB 4545 150 BO - 1-1/2 Black-Oxide treated Angular Contact Headset Bearing (40x52x7 -45/45)
Enduro ACB 4545 150 BO - 1-1/2 Black-Oxide treated Angular Contact Headset Bearing (40x52x7 -45/45)
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ACB 4545 150 BO - 1-1/2 Black Oxide Angular Contact Headset bearing (40mm x 52mm x 7mm: 45x45 deg)
Angular-contact headset bearing featuring anti-corrosion Black oxide/Magnetite treated 52100 High-Carbon Chromium alloy races paired with grade 10 Balls. Black Oxide treatment provides an extra level of corrosion resistance and extended worry-free performance
This size bearing is also known in the bike Industry by these part numbers:
- HSS 6011
- BAA0695K
- TH-070
- MR-128
- MH-P16
- TH MR082
The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races and then steps up to full 440C stainless steel. The Black Oxide headset bearings are treated in multiple chemical baths to achieve a 3 micron anti corrosive depth. This process also provides a secondary advantage of heat treatment making them tougher. The BO races then go through a secondary "super grind” polishing the rolling surface mirror smooth. Both Stainless and BO bearings are engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with extra high pressure Almagard 3752 grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.
Static load - 977lbf / 4.34kN
Weight - 24g
Shipping & Refunds
Shipping & Refunds
Free shipping on all orders. Delivered in 3–5 business days pan-India.
Full refund if your item turns out to be out of stock or we ship the wrong one, and a free replacement if it arrives damaged. We can't accept returns for change of mind or wrong size, so please check fit before ordering. Read our refund policy
Warranty & Authenticity
Warranty & Authenticity
Every product is 100% genuine, sourced directly from the manufacturer. GST invoice included with every order.
Product FAQs
Is this product covered by a manufacturer warranty?
Yes. All products sold by Ciclo Essentials come with the full manufacturer warranty. A GST invoice is included with every order for warranty claims.
Can I return or exchange a product?
We give a full refund if an item is out of stock after you order or if we ship the wrong item, and a free replacement if it arrives damaged. We can't take returns for change of mind or a wrong size, so please check fit first: WhatsApp us or add your bike in My Garage. Details in our refund policy.
Is this product genuine and not a replica?
Absolutely. Ciclo Essentials sources directly from authorised distributors and brand-owned warehouses. Every product is 100% genuine with a valid GST invoice.
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Free shipping on all orders
Pan-India delivery, 3–5 business days
100% Genuine
Direct from manufacturer
GST Invoice
Valid for business reimbursement
Wrong item? Full refund
Also if it's out of stock