6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51 Bottom Bracket Bearing Axl one size

6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51

one size
$11.64 $13.84
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6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51 Bottom Bracket Bearing Axl one size
  • 6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51 Bottom Bracket Bearing Axl one size
  • 6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51 Bottom Bracket Bearing Axl
  • 6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51 Bottom Bracket Bearing Axl
  • 6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51 Bottom Bracket Bearing Axl
  • 6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51 Bottom Bracket Bearing Axl
  • 6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51 Bottom Bracket Bearing Axl
  • 6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51 Bottom Bracket Bearing Axl
  • 6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51 Bottom Bracket Bearing Axl one size
  • 6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51 Bottom Bracket Bearing Axl
  • 6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51 Bottom Bracket Bearing Axl
  • 6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51 Bottom Bracket Bearing Axl
  • 6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51 Bottom Bracket Bearing Axl
  • 6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51 Bottom Bracket Bearing Axl
  • 6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51 Bottom Bracket Bearing Axl
6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51

6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51

$11.64 $13.84
Colorone size

6805-RD Deep Groove Ball Bearing for Bike Bottom Brackets

Upgrade your drivetrain with this precision-engineered 6805-RD Bottom Bracket Bearing — a direct-fit replacement for HT2 and BB51 bottom bracket systems. Constructed from high-grade bearing steel with rubber seals and factory-applied grease, this bearing is built to handle real-world cycling demands with smooth, consistent rotation and long service life.

Key Specifications

  • Model Numbers: 6805-RD / 6805RD / MR25376 / SC6805N
  • Structure: Deep Groove Ball Bearing
  • Material: Bearing Steel
  • Inner Diameter: 25 mm
  • Outer Diameter: 37 mm
  • Thickness: 6 mm
  • Closures: Rubber Sealed (RD)
  • Lubrication: Grease (pre-lubricated)
  • Dynamic Load Rating (Cr): 4,150 N
  • Static Load Rating (Cor): 2,382 N
  • Compatible Systems: HT2, BB51

Why Choose This Bearing?

  • ✅ Precision Fit: Exact 25×37×6 mm dimensions for a drop-in replacement on HT2 and BB51 bottom brackets
  • ✅ Rubber Sealed: Keeps dirt, water, and debris out for extended bearing life
  • ✅ Pre-Greased: Ready to install straight out of the box — no additional lubrication needed
  • ✅ High Load Ratings: Handles demanding pedalling forces with a 4,150 N dynamic and 2,382 N static load rating
  • ✅ Bearing Steel Construction: Superior hardness and wear resistance for miles of reliable performance

Package Contents

  • 1 × 6805-RD Bottom Bracket Bearing (25×37×6 mm)

Notes

  • Due to manual measurement, please allow a tolerance of 1–3 mm.
  • Actual product colour may vary slightly from images due to monitor display differences.
  • Made in Mainland China.

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Frequently Asked Questions

Q: Is this 6805-RD bearing compatible with my HT2 or BB51 bottom bracket?

A: Yes. This bearing is specifically designed as a dedicated replacement for HT2 and BB51 bottom bracket systems. With its precise 25 mm inner diameter, 37 mm outer diameter, and 6 mm thickness, it provides an accurate fit for these bracket types.

Q: Does the 6805-RD bearing come pre-lubricated and ready to install?

A: Yes. The bearing arrives pre-packed with grease and rubber-sealed on both sides, so it is ready to install immediately. No additional lubrication is required before fitting.

Q: What do the model numbers MR25376, SC6805N, and 6805RD refer to?

A: These are all cross-reference designations for the same bearing. MR25376 describes the dimensions (25×37×6 mm), SC6805N is an alternate industry code, and 6805-RD / 6805RD is the standard series designation with a rubber-seal (RD) closure. All refer to this exact bearing.

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