SKU: 52694208981

Enduro Headset Bearing 1.125" Stainless ACB 3645 1

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Description

Enduro Headset Bearing 1.125" Stainless ACB 3645 1ACB 3645 1125 SS 1 1 8" 440C Stainless Steel Angular contact Headset Bearing (30. 5mm 41. 8mm x 6. 3mm; 36 x 45 deg) This size bearing is also known in the bike Industry by these part numbers: IS42ACB30418KMH P03K Not all stainless steel is created equal. Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest

ACB 3645 1125 SS - 1-1/8" 440C Stainless Steel Angular contact Headset Bearing (30.5mm 41.8mm x 6.3mm; 36 x 45 deg) -

This size bearing is also known in the bike Industry by these part numbers:
IS42
ACB30418K
MH-P03K

Not all stainless steel is created equal. 
Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine grease in these bearings to additionally water proof against the elements.  All Enduro stainless headset bearings carry a limited lifetime warranty.

The Enduro line of headset bearings consists of two basic performance levels that are a substantial step up from standard bike industry specifications. Enduro "entry-level" headset bearings feature premium materials like Black-Oxide treated races and carry a two year warranty, while our premium 440C stainless headset bearings carry a full lifetime warranty. 

All Enduro bearings are always engineered with the largest balls possible and feature dual lip labyrinth seals for maximum protection against sweat and the elements and to contain the 90% high pressure water proof grease, keeping everything running smoothly for the duration. The Angular Contact (A/C) design of Enduro headset bearings allow all balls in the bearing to engage the load, spreading the force over a larger surface area minimizing any possibility of premature wear and greatly extending bearing life.

Static load - 935lbf / 4.15kN 
Weight - 19g


Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
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  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 52694208981

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4.7 ★★★★★
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Verified Purchase
Jean Kanzler
Massapequa, US
★★★★★ 4
Nice toy
Color: Red Nylon Yellow Hotdog
It is cool, tough and hard. Just wish it was larger bc my dog is 80 pounds. It won’t fall apart in a day and made in the USA!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 14, 2024
A
Verified Purchase
Amazon Customer
Belleville, US
★★★★★ 5
good purchase
Color: Red Nylon Yellow Hotdog
This thing is great for hi anxiety dogs and dogs that ned to have something to do or to chew. It will take them a while to get through to it. I was told that it was indestructible but I knew if there was a dog that could do it, it would be mine, and she did. But it took her some time. But she loves it and it keeps her busy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 24, 2025
M
Verified Purchase
Mary Ann
Houston, US
★★★★★ 5
Cute and durable!
Color: Red, Color: Red
My dog absolutely loves this toy! I'm not sure why people are complaining it's too hard, it's a nylon dog chew toy, it's supposed to be hard. I love the little holes in the lattice top I can stuff with treats. It keeps my very (VERY) active dog busy for a long time. I would definitely recommend this if you have a power chewer. It's also super cute, I just love to see him tote around a piece of pie.
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Reviewed in the United States on May 15, 2021
D
Verified Purchase
David H. Wahl
Los Angeles, US
★★★★★ 5
Excellent product.
Color: Red Nylon Yellow Hotdog
Excellent product. Dogs loved it!
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Reviewed in the United States on May 6, 2026
S
Verified Purchase
sandygirl
Phoenix, US
★★★★★ 5
Durable
Color: Red Nylon Yellow Hotdog
Durable and safe - made in USA. Dog enjoys it, and pet parents are delighted that it is safe for their fur baby. I bought the toy as a gift.
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Reviewed in the United States on January 4, 2026

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