6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm Bottom Bracket Bearing QXL one size

6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm

one size
$11.07 $12.99
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6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm Bottom Bracket Bearing QXL one size
  • 6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm Bottom Bracket Bearing QXL one size
  • 6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm Bottom Bracket Bearing QXL
  • 6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm Bottom Bracket Bearing QXL
  • 6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm Bottom Bracket Bearing QXL
  • 6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm Bottom Bracket Bearing QXL
  • 6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm Bottom Bracket Bearing QXL
  • 6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm Bottom Bracket Bearing QXL one size
  • 6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm Bottom Bracket Bearing QXL
  • 6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm Bottom Bracket Bearing QXL
  • 6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm Bottom Bracket Bearing QXL
  • 6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm Bottom Bracket Bearing QXL
  • 6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm Bottom Bracket Bearing QXL
6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm

6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm

$11.07 $12.99
Lengthone size

6805RD Bicycle Bottom Bracket Bearing – HT2 / BB51 Compatible

Keep your drivetrain spinning smoothly with this high-quality 6805RD deep groove ball bearing, engineered specifically for bicycle bottom bracket applications. Compatible with HT2 and BB51 systems, this precision bearing delivers consistent, low-friction rotation to maximize your pedaling efficiency and extend the life of your bottom bracket assembly.

Key Features

  • Model Number: MR25376 / SC6805N RS
  • Structure: Deep Groove Ball Bearing
  • Material: High-grade bearing steel for durability and longevity
  • Dimensions: Inner Ø 25mm × Outer Ø 37mm × Thickness 6mm
  • Closure Type: Double rubber sealed (2RS) — keeps dirt and moisture out
  • Lubrication: Pre-packed with grease for smooth, ready-to-install performance
  • Dynamic Load Rating (Cr): 4,150 N
  • Static Load Rating (Cor): 2,382 N
  • Compatible Systems: HT2, BB51

Why Choose This Bearing?

Whether you're replacing a worn-out bottom bracket bearing on your road bike, mountain bike, or commuter, this 6805RD bearing is a direct-fit solution. The double rubber seal (2RS) effectively blocks contaminants, while the pre-applied grease ensures effortless installation and long-lasting smooth rotation mile after mile.

Package Contents

  • 1 × 6805RD Bicycle Bottom Bracket Bearing (MR25376 / SC6805N RS)

Made in Mainland China.

Note: Due to manual measurement, please allow a tolerance of 1–3mm. Colors in product images may vary slightly from the actual item due to monitor display differences.

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Frequently Asked Questions

Q: Is the 6805RD bearing compatible with Shimano HT2 and BB51 bottom brackets?

A: Yes. This 6805RD bearing is specifically designed for use with HT2 and BB51 bottom bracket systems, making it a reliable direct replacement for those setups. Always verify the inner diameter (25mm) and outer diameter (37mm) match your existing bearing before installation.

Q: What does the 2RS (rubber sealed) closure mean for my bike?

A: The 2RS designation means the bearing features double rubber seals on both sides. This keeps grease inside the bearing and prevents dirt, water, and debris from entering — ideal for cycling in varied and demanding conditions, helping maintain smooth rotation for longer.

Q: Does this bearing come pre-lubricated?

A: Yes, the 6805RD bearing comes pre-packed with grease, so it is ready to install straight out of the box with no additional lubrication required.

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