Marin Rift Zone ALU Headset Bearing Kit | Blueseal Bike Bearings™
Description
This kit contains both the upper and lower bearings used in the headsets of Alpine Rift Zone Alluminium Frames
Kit contains:
1 x P03K (MR122 TH873E) 30.15 x 41 x 6.5H - Internal & External Angle: 36/45
1 x MR127 (MR127 TH073E) 40 x 51.8 x 8H - Internal & External Angle: 36/45
Free UK Shipping
Orders made before 11 am are shipped the same day.
Trusted Seller
Independent business with 15+ years bike bearing experience.
60 Days Returns
No-quibble returns or exchanges — always here to help.
Need Help?
Message us anytime — we reply quickly and carry a huge stock.
Blueseal Bike Bearings™ are Bicycle Specific Bearings
Close Contact 2RS LLU Seals
Blueseal Bike Bearings™ use top-quality LLU 2RS close-contact rubber seals. The tighter the seal is to the inner bearing race, the harder it is for water and dirt to get in — and the harder it is for grease to escape.
Max. Fill Premium Grease
Standard bearings contain around 20% generic grease, offering limited resistance against rain, corrosion, and dirt ingress.
Blueseal Bike Bearings™ contain the maximum possible fill of premium Mobil waterproof grease without compromising seal function.
ABEC 3 as Standard
Most non-bike-specific bearings are ABEC 1. Blueseal Bike Bearings™ are ABEC 3 rated, providing smoother running and longer lifespan.
MAX Bearings — 40% Stronger
MAX full complement bearings contain no retaining cage, allowing for a maximum number of ball bearings.
This increases both radial and axial load capacity by up to 40% compared to standard bearings.
