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Bike Headset Bearings- All Sizes - Blueseal Bike Bearings™

Blueseal Bike Bearings™ are designed specifically for use in bicycles with extra grease, superior seals and extended life.

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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.


45 degree or 36 degree inner race headset bearing identification

 

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) MR12740 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 

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Bike Headset Bearings- All Sizes - Blueseal Bike Bearings™

About Blueseal Bike Bearings™   

About Blueseal Bike Bearings™   

Hope Pro 2 Rear Hub Bearings | Blueseal Bike Bearings™ - Trailvision - Bicycle Bearing Suppliers

ABEC 3 as Standard

Most non-bike specific bearings are ABEC 1 as standard. Blueseal Bike Bearings™ are all ABEC 3 Rated, this higher class of bearing runs smoother & last longer. 

Max. Fill Premium Grease

Standard bearings contain a small amount of basic bearing grease (Approx. 20%) which offers little protection towards corrosion and rain and dirt ingress.

Blueseal Bike Bearings™ contain the maximum fill of Mobil waterproof grease possible without compromising the function of the close-contact rubber seals.

Designed For Bicycles

Specially engineered bicycle bearings. Designed for maximum efficiency, they outperform standard bearings.

Close Contact 2RS LLU Seals

Blueseal Bike Bearings™ have top-quality LLU 2RS close-contact rubber seals. The tighter the seal is to the inner bearing race the harder for water and dirt to get in and the grease to get out!

100,000's Bearings Sold - Trusted for Over 15 Years   

100,000's Bearings Sold - Trusted for Over 15 Years   

We are an independent family business with over 15 years of hands-on experience in the bike-bearing industry. Using our expertise we only stock the best bearings that are suited for use in bicycles.

Customer Reviews

Based on 16 reviews
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B
Bryan Harding
Great Bearings, Price and Service

Ordered a set of headset bearings for my Neil Pryde Tri bike. I’ve used Blue Seal Bearings before and knew they were quality bearings. Price was reasonable (you get what you pay for) and service was exceptional. I’ll definitely be using Trailvision for my future bearing purchases.

M
Mark Killing
Headset bearings

I needed to replace the Ritchey headset bearings on my gravel bike. The Blue Seal versions came highly recommended by a few friends so I ordered a set. Delivery was quick, the bearings were well packaged and the fitted perfectly in to old headset. Thanks, very satisfied customer.

M
Mark Appleton
Great Bearings

Trail vision supply quality bearings that are competitively priced and provide great customer service. Superb all round package and highly recommended.

D
David Rogers
Great Bearings and Fast Delivery

Comprehensive range of bearings on website with dimensions given allow you to ensure you buy the correct bearings for your bike. Bought headstock bearings for my Specialized Roubaix at a very good price, free postage and fast delivery, bearings were good quality and fitted perfectly. Great service, very pleased, will definitely use Trailvision again in the future

T
Tim Grima

Great help to identify correct bearing, thanks !

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