SKU: 28586834021

Bike Headset Bearings- All Sizes - Blueseal Bike Bearings

$12.76 $14.18
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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

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Description

Bike Headset Bearings- All Sizes - Blueseal Bike BearingsBlueseal Bike bearings are bicycle specific bearings designed to withstand the unique challenges faced by a bicycle bearing. ABEC 3 rating, a complete fill of waterproof grease and close contact rubber seals make Blueseal Bike Bearings the obvious choice for bicycles. If you know the dimensions or the code and are unsure which your bearing is, chat with us and we will do our best to help. Headset bearings are notoriously hard to identify and the same

Blueseal Bike bearings are bicycle-specific bearings designed to withstand the unique challenges faced by a bicycle bearing. ABEC 3 rating, a complete fill of waterproof grease and close-contact rubber seals make Blueseal Bike Bearings the obvious choice for bicycles.‚

If you know the dimensions or the code and are unsure which your bearing is,‚ chat with us and we will do our best to help.


‚

Headset bearings are notoriously hard to identify and the same bearing can use different codes to identify them. If your code isn't listed here or you are not sure what headset bearing you need please‚ chat with us‚ and we will help you find the bearing you need.

The chances are we have the bearing you need!


Example No) Bearing Code |‚ ‚ Dimensions‚ |‚ Inner/Outer Chamfer Angle‚ |‚ Alternative Codes & Common Uses


1) MR042 |‚ ‚ 30.5 x 41.8 x 8H‚ ‚ |‚ 45/45‚ ‚ |‚ ‚ TH870‚ MR121 MH-P08H8

2) MR121 |‚ ‚ 30.5 x 41.8 x 8H‚ ‚ |‚ 45/45‚ |‚ ‚ With lip on Inner Race‚ TH870E MHP08F

3) MR122 |‚ 30.15 x 41 x 6.5H‚ |‚ 36/45‚ |‚ ‚ TH873E TH873R MR054 MR115 MH-P03K

4) MR170 |‚ ‚ 40 x 52 x 7H‚ |‚ 45/45‚ |‚ ‚ TH070‚ MP-P16 TH070E TH070R

5) MR127 |‚ 40 x 51.8 x 8H | 36/45 |‚ TH073‚ MR110 TH073R TH073E TH073S

6) MR151 |‚ ‚ 37 x 48.9 x 7H‚ |‚ 45/45‚ |‚ ‚ NO8c-138 MHP21

7) MH-P16H8 |‚ ‚ 40 x 52 x 8H‚ |‚ 45/45‚ |‚ ‚ ACB52

8) MR168 |‚ ‚ 34 x 46.8 x 7H‚ |‚ 45/45‚ |‚ ‚ TH970 MR082 MHP22 TH970E TH970DJ TH970S TH970R

9) MH-P03‚ |‚ 30.15 x 41 x 6.5H‚ |‚ 45/45‚ |‚ ‚

10) MR075 |‚ ‚ 30.2 x 41 x 7.8H‚ |‚ 36/45‚ |‚ ‚ TH800

11) P08H7 |‚ ‚ 30.15 x 41.8 x 7H‚ |‚ 45/45‚ |

12) MR136 |‚ 32.8 x 41.8 x 6H‚ |‚ 45/45‚ |‚ ‚ No.51

13) MR137 |‚ ‚ 37 x 46.9 x 7H‚ |‚ 45/45‚ |‚ ‚ No.54

14) MH P25K |‚ 40 x 52 x 6.5 H‚ |‚ 36/45‚ |‚ ‚ Cane Creek 52mm Lower Bearing

15) MR043 |‚ ‚ 30.2 x 41.5 x 6.5H‚ |‚ 36/36‚ |‚ ‚ TH872E MR049s MR118

16) MR040 |‚ ‚ 30.2 x 41 x 7.7H‚ |‚ 36/45‚ |‚ ‚ TH873/DJ .

17) AC3344H6 |‚ 33 x 44 x 6‚ |‚ 36/45‚ |‚ ‚ Lower bearings on some Canyon Frames

18) AC3544 |‚ 35 x 44 x 5.5‚ |‚ 36/45‚ |‚ ‚ Upper bearing used on some Canyon Frame

19) ACB460H7 |‚ ‚ 34.1 x 46 x 7‚ |‚ 45/45‚ |‚ ‚ Lower bearing Scot Foil

20) MH-P22 |‚ ‚ 34.1 x 46.9 x 7H‚ |‚ 45/45‚ |‚ ‚ Lower bearing Focus

21) 6707 LLB |‚ ‚ 35 x 44 x 5mm‚ |‚ 90/90‚ |‚ ‚ Acros A170 Upper

22) MR314357 |‚ ‚ 31 x 43.5 x 7mm‚ |‚ 90/90‚ |

23) ACB458 |‚ 36.8 x 45.8 x 6.5H‚ |‚ 45/45‚ |‚ ‚ Future Shock Headsets

24) P03H7 |‚ 30.15 x 41 x 7‚ |‚ 45/45‚ |‚ ‚ Scott Foil Upper bearing TK410

25) ACB519H8 |‚ ‚ 40 x 51.9 x 8‚ |‚ 45/45‚ |‚ ‚ Ritchey Lower

26) ACB515H7 |‚ 40 x 51.5 x 7‚ |‚ 45/45‚ |‚ ‚ Ribble Headset Lower

27) MH-P08 |‚ ‚ 30.15 x 41.8 x 6.5‚ |‚ 45/45‚ |

28) MR155 |‚ 30.15 x 41.8 x 7.7‚ |‚ 45/45‚ |‚ ‚ TH870/DJ‚ P08H7.7

29) MR031 |‚ ‚ 37 x 48.9 x 6.5‚ |‚ 36/45‚ |‚ ‚ IS-2-138‚

30) ACB3748H7 |‚ ‚ 37 x 48 x 7‚ |‚ 36/45‚ | Acros A170 Lower

31) P08H7K‚ |‚ ‚ 30.15 x 41.8 x 7‚ |‚ 36/45‚ | Acros A170 Upper used in YT

32) P16K‚ |‚ 40‚ x 52 x 7‚ |‚ 36/45‚



Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 28586834021

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4.8 ★★★★★
Based on 21 reviews
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Product Reviews
J
Verified Purchase
Jose Correa
Houston, US
★★★★★ 5
Stunning Automatic Watch With TopTier Durability and Precision
Color: Grey
“I got this Tissot PRX for my cousin’s birthday and bro fell in LOVE instantly. This thing keeps time like a beast, never slows down, never lags. Automatic movement, so no batteries, no drama. Durability? Stupid good. You can hit it, bump it, live life rough, it still looks box fresh. Size wise it was almost perfect. I just had to remove two links, nothing big. It’s light, functional, comfortable, doesn’t weigh you down, doesn’t get in the way but more importantly I can say this watch is in everyone’s eyesight when we wear it. Cause of course I had to get another one! Basically. I gave him a very nice piece as a gift, and now he’s walking around like he owns Switzerland.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 11, 2025
C
Verified Purchase
Cienfuegos
West Palm Beach, US
★★★★★ 5
Great watch!!!!
Color: Grey
Excellent quality, one of the best, elegant.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
T
Verified Purchase
T. H.
Los Angeles, US
★★★★★ 5
Excellent value for an automatic watch, keeps VERY good time.
Color: Grey, Color: Grey
I've only had the watch for a day but wanted to leave a quick review on it to share a couple of notes. So far it keeps VERY good time, better than any of the automatics I own (including a Rolex Submariner, Tag Heuer Aquaracer, Tag Heuer Formula One, and several other sub $1k watches). I set it to an atomic time app on my phone yesterday and 24 hours later it's still SPOT on - hasn't gained/lost even a 1/10 of a second. I was shocked to see it's kept PERFECT time for the last day, I'm really blown away so far. I've worn it the entire time, we'll see how well it keeps time while being stored in a winder. This picture shown is the watch with a 22mm leather band on it, fit's without any issues (just need to squeeze in the leather a tad). I doubt it would work with a 22mm metal bracelet, but leather works great. Just FYI since the 21mm lug width is kind of odd. The face isn't quite a lustrious as the images make it look, but it's still a great-looking watch. For a sub $1000 automatic you can't go wrong, this is a fantastic watch at a great price. It'll be my daily driver for some time I'm sure. If I have any issues in the future I'll update the review.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 22, 2021
B
Verified Purchase
Beniamin Grigoryan
Boise, US
★★★★★ 5
It looks really cool and striking.
Color: Grey, Color: Grey
Really cool and beautiful watch. Although my specific unit runs 5 seconds fast every day—at first it’s annoying, but eventually you stop caring. 🤣
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Reviewed in the United States on April 16, 2026
P
Verified Purchase
Paul Andreini
Natrona Heights, US
★★★★★ 5
A Beautiful Timepiece at an Awesome Price!!
Color: Grey, Color: Grey
I have lusted after this watch for four months. I first tried on a similar model (stainless steel band with a green face) in a local jewelry shop (Spitz Jewlers, Walnut Creek, CA, USA). It was "love at first sight," even if I didn't love the white lines on the face from 12-6 and 3-9. At the time, the MSRP was $775. The MSRP has since increased to $795. But I bought this beauty on Amazon.com for only $524.99; after applying the cash-back from my Prime credit card, this watch costs only $498.75. This was "the offer that I could not refuse," to quote from "The Godfather." Accuracy could be better: after only a few days, it is now 7 seconds behind my phone (to which I set my new watch). But I don't really care about that all that much. This is why I rated "accuracy" at 4 stars, but my overall review is 5 stars. My video shows the date changing suddenly at 11:59:59pm, just how I want it; in another photo, you can see that my Seiko changes the date more slowly, which I do not like. This watch is absolutely phenomenally beautiful. If you're on the fence over whether to make this purchase, then I would say "go for it!" You will not find a prettier, more accurate watch at a lower price in ANY store in the entire USA.
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Reviewed in the United States on April 28, 2023

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