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Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber M50 Class Nitro RC Helicopter (21943); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber M50 Class Nitro RC Helicopter (21943); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber M50 Class Nitro RC Helicopter (21943); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber M50 Class Nitro RC Helicopter (21943); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber M50 Class Nitro RC Helicopter (21943); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber M50 Class Nitro RC Helicopter (21943); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber M50 Class Nitro RC Helicopter (21943); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber M50 Class Nitro RC Helicopter (21943); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber M50 Class Nitro RC Helicopter (21943); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber M50 Class Nitro RC Helicopter (21943); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber M50 Class Nitro RC Helicopter (21943); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber M50 Class Nitro RC Helicopter (21943); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber M50 Class Nitro RC Helicopter (21943); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber M50 Class Nitro RC Helicopter (21943); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber M50 Class Nitro RC Helicopter (21943); exact bearing sizes and quantities vary by RC model.

RCScrewZ Metal Shielded Bearing Kit kyo076b for Kyosho Caliber M50 Class Nitro RC Helicopter (21943) | SET

RCScrewZ

SKU: kyo076b

Regular price
$69.88
Sale price
$69.88
Regular price
$79.95
Shipping, stock & payment info
Quick snapshot of availability, estimated delivery, and our shipping/returns.

Available Quantity: 98

Free shipping on all U.S. orders (USPS Priority Mail).
Ships within 1โ€“2 business days (Monโ€“Fri); some Saturday shipments by 12:00 PM ET.
Most orders ship from Canton, MI 48187. APO/FPO/DPO & PO Boxes welcome.
Priority Mail typically delivers in 2โ€“3 business days (estimates; not guaranteed).
Easy 30-day returns with prepaid USPS label; refunds issued within 3 business days after the return is received.

Over 99% positive over ~14,000 orders on eBay (last 12 months) โ€” as of October 2025. View on eBay

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This page shows the Metal-Shielded Bearing Kit for this RC model โ€” view all compatible Screw and Bearing kits for this RC model by clicking this link:

Kyosho Caliber M50 Class Nitro RC Helicopter (21943) โ€” Find Compatible Stainless Screw & Bearing Kits

Pro tip: Most builders grab a Stainless Screw Kit and a Bearing Kit for this RC model so everything wears evenly.

Quick Fit Summary
  • Compatible Brand: Kyosho
  • RC Model: Kyosho Caliber M50 Class Nitro RC Helicopter (21943)
  • Scale: 1:8
  • Power Source / Fuel Type: Nitro & Glow Fuel
  • Chassis: Kyosho Caliber M50 helicopter (21943)
  • Era: Not currently verified
  • OEM / Models: 21943
Quick Fit Summary โ€” Full Details

Quick Fit Summary

Key fit details for your RC model, plus whatโ€™s in this kit.

RC Model Fit & Specs

  • Compatible Brand: Kyosho
  • Fit: Kyosho Caliber M50 Class Nitro RC Helicopter (21943)
  • Compatible RC Model Numbers: 21943
  • Scale: 1:8
  • Power Source / Fuel Type: Nitro & Glow Fuel
  • Vehicle Type: Class M50 Nitro RC Helicopter
  • Chassis: Kyosho Caliber M50 helicopter (21943)
  • Era: Not currently verified
  • RC Model Terrain: Aerial Use

This Kit Details

  • SKU: kyo076b
  • MPN: kyo076b
  • Product: High-Performance RC Bearing Kit
  • Bearing Type: Metal-Shielded (On-Road)
  • Sealed Bearings: No
  • Water/Dust Protection: Low-drag, not sealed
  • Product Material: Carbon Chrome Bearings
  • Product Color: Silver
  • Bearing Sizes Included: 2.5 x 2.4 flanged bearings ยท 3x7x3mm bearings ยท 3x8x4mm flanged bearings ยท 4x7x2.5mm flanged bearings ยท 4x8x3mm bearings ยท 5x10x4mm bearings ยท 5x11x5mm bearings ยท 5x14x5mm bearings ยท 6x13x5mm bearings ยท 8x16 thrust bearing ยท 10x19x5mm bearings
  • Tips: Seat fully ยท Do not over-tighten ยท After cleaning: add light oil
  • Install: โ‰ˆ60 min; recheck torque after first run
  • Country of Origin: United States
Full Product Description

Exact RC Model Fitment

Confirm the exact RC model and RC vehicle OEM/model number below before ordering.

Compatible RC Model
Kyosho Caliber M50 Class Nitro RC Helicopter (21943)
Compatible RC Brand
Kyosho
RC Vehicle OEM / Model Number(s)
21943
RCScrewZ Kit Part Number
kyo076b

Vehicle Compatibility Details

Review these vehicle details to help confirm compatibility with your RC model.

RC Vehicle OEM / Model Number(s)
21943
RC Chassis Compatibility
Kyosho Caliber M50 helicopter (21943)
Compatible Vehicle Type
Class M50 Nitro RC Helicopter
Terrain Compatibility
Compatible Scale
1:8
Compatible Fuel Type
Nitro & Glow Fuel

What Is Included

Included bearing sizes for this Metal-Shielded Bearing Kit:

    • 2.5 x 2.4 flanged bearings
    • 3x7x3mm bearings
    • 3x8x4mm flanged bearings
    • 4x7x2.5mm flanged bearings
    • 4x8x3mm bearings
    • 5x10x4mm bearings
    • 5x11x5mm bearings
    • 5x14x5mm bearings
    • 6x13x5mm bearings
    • 8x16 thrust bearing
    • 10x19x5mm bearings

What Is Not Included

Only the bearings identified in the included-bearing-size list are part of this kit.ย 

The RC vehicle and separately sold parts are not included unless specifically listed.

Installation & Model Notes

Metal Shielded Bearing Kit Compatibility:

Quick Fit Summary:

  • Compatible Brand: Kyosho

  • Fit: Model-specific fitment for Kyosho Caliber M50 Class Nitro RC Helicopter, OEM/model code 21943.

  • Compatible RC Model/OEM Numbers: 21943

  • Scale: Not currently verified

  • Power Source / Fuel Type: Nitro

  • Battery / Cell Count: Not applicable - nitro powered.

  • Drive Type: Not currently verified

  • Vehicle Type: Class M50 Nitro RC Helicopter

  • Chassis: Kyosho Caliber M50 helicopter (21943)

  • Era: Not currently verified

  • OEM / Models: 21943

  • RC Model Terrain: Aerial Use

This Kit Details:

  • SKU: kyo076b

  • MPN: kyo076b

  • Kit Type: Metal Shielded Bearing Kit

  • Bearing Type: Metal-Shielded Bearings (On-Road / Low-Drag)

  • Sealed Bearings: No

  • Water/Dust Protection: Low-drag, not sealed

  • Product Material: Carbon Chrome Steel Bearings

  • Product Color: Silver

OEM / Model Code / Alias Coverage:

  • 21943

Model Family Coverage:

  • Caliber
  • Caliber M50

Product Benefits:

  • Metal shielded bearings are tuned for lower rolling drag and smooth drivetrain feel in cleaner running conditions.
  • Best for race prep, display builds, on-road use, or buyers who prefer reduced friction over maximum contamination protection.

Bearing Size Details:

  • 2.5 x 2.4 flanged bearings
  • 3x7x3mm bearings
  • 3x8x4mm flanged bearings
  • 4x7x2.5mm flanged bearings
  • 4x8x3mm bearings
  • 5x10x4mm bearings
  • 5x11x5mm bearings
  • 5x14x5mm bearings
  • 6x13x5mm bearings
  • 8x16 thrust bearing
  • 10x19x5mm bearings

Fitment Note: Screw kit note: this legacy screw-kit fitment is treated as a metric conversion; metal parts may need re-tapping for metric threads and axle wheel nuts remain standard thread.

Release Date: Not currently verified.

Search-Friendly Notes: Compatible with Kyosho builders searching by model name, series, and OEM/model number for the correct RCScrewZ screw kit or bearing kit.

Metal-Shielded Bearing Kit Details

Review the bearing-kit details below before ordering.

RCScrewZ Kit Part Number
kyo076b
Product Brand
RCScrewZ
Shielding Type
Metal-Shielded (On-Road)
Sealed Bearing Status
No
Bearing Material
Carbon Chrome Bearings
Approximate Piece Count
Color
Silver

Before Ordering

  • Confirm your exact RC model, RC brand, and OEM/model number whenever possible.
  • Review the included-bearing-size list before purchase.
  • Read the installation and model notes before disassembly or installation.

Vehicle versions, chassis revisions, and model-year configurations can differ.ย 

Confirm fitment before purchase when your RC vehicle differs from the details shown above.

Fits: Kyosho Caliber M50 Class Nitro RC Helicopter (21943)
$69.88

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