Bike Headset Bearings- All Sizes - Blueseal Bike Bearings™
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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.
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
90 Days No Quibble Returns
If you’re looking to return or exchange your order for whatever reason, no problem we’re here to help! We offer no quibble returns within 90 days of purchase. You can return your product for store credit, a different product, or a refund to the original payment method.
Please note products may be removed from the packaging however, non-faulty items must not show any obvious signs of use.
Our Promise
Our promise is to supply you with the correct bearings and get you back up and running as quick as possible or your money back. Refunds are processed on the return of the bearings at the buyers cost.
To initiate a return, please complete the following steps:
- Reply to your order confirmation email to request which products you would like to return.
- Send all items back to us with your order number and request. Please use an appropriate postal service as the goods are your responsibility until they arrive with us.
Additional Information:
- Credit, Refunds or exchanges will be processed within 24hrs of receipt
- With the exception of faulty goods, shipping costs and made by the buyer.
Any questions please feel free to contact us sales@trailvision.co.uk
We are here to help, we are here to keep you rolling!
We are an independent family run business with over 15 years of hands-on experience in the bicycle industry. Using our expertise we only stock the highest quality bicycle parts and bicycle bearings that are specifically suited for use in bicycles.
Bike Headset Bearings- All Sizes - Blueseal Bike Bearings™
Material Upgrades
Black Oxide Coating
Enhanced Corrosion Resistance
Black oxide coatings enhance overall reliability by preventing corrosion, reducing wear, and improving the durability of bearings.
Stainless Steel
Superior Corrosion Resistance
440C Stainless Steel with 16-18% Chromium. Provides the highest corrosion resistance especially in poor wet conditions.
ABEC 3 as Standard
Max. Fill Premium Grease
Designed For Bicycles
Close Contact 2RS LLB Seals
There was a problem with delivery that was not their fault, I contacted them & the issue was resolved immediately with out any fuss.
Spot on. Bearings to fit anything
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.
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.
Trail vision supply quality bearings that are competitively priced and provide great customer service. Superb all round package and highly recommended.