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Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990); exact bearing sizes and quantities vary by RC model.

RCScrewZ Metal Shielded Bearing Kit kyo072b for Kyosho Caliber 90 / Caliber 90 V6 Nitro RC Helicopter (21990) | RCX

RCScrewZ

SKU: kyo072b

Regular price
$85.97
Sale price
$85.97
Regular price
$89.95
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Available Quantity: 100

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

Kyosho Caliber 90 (#21990) RC Helicopter — Compatible Kits by RCScrewZ (Screws & Bearings)

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 90 / Caliber 90 V6 Nitro Heli (21990)
  • Scale: 1:8
  • Power Source / Fuel Type: Nitro & Glow Fuel
  • Chassis: Kyosho Caliber 90 / V6 helicopter (21990)
  • Era: Not currently verified
  • OEM / Models: 21990
Quick Fit Summary — Full Details

Quick Fit Summary

Key fit details for your RC model, plus what’s in this kit.

RC Model Fit & Specs

  • Compatible Brand: Kyosho
  • Fit: Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990)
  • Compatible RC Model Numbers: 21990
  • Scale: 1:8
  • Power Source / Fuel Type: Nitro & Glow Fuel
  • Vehicle Type: Class 90 Nitro RC Helicopter
  • Chassis: Kyosho Caliber 90 / V6 helicopter (21990)
  • Era: Not currently verified
  • RC Model Terrain: Aerial Use

This Kit Details

  • SKU: kyo072b
  • MPN: kyo072b
  • Product: Performance RC Bearing Rebuild 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: Note: The specific bearing sizes will be listed soon. In the meantime · please contact us for detailed information about the sizes included in this kit. We're happy to assist you!
  • Tips: Seat fully · Do not over-tighten · After cleaning: add light oil
  • Install: ≈60 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 90 / Caliber 90 V6 Nitro Heli (21990)
Compatible RC Brand
Kyosho
RC Vehicle OEM / Model Number(s)
21990
RCScrewZ Kit Part Number
kyo072b

Vehicle Compatibility Details

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

RC Vehicle OEM / Model Number(s)
21990
RC Chassis Compatibility
Kyosho Caliber 90 / V6 helicopter (21990)
Compatible Vehicle Type
Class 90 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:

    Note: The specific bearing sizes will be listed soon. In the meantime, please contact us for detailed information about the sizes included in this kit. We're happy to assist you!

What Is Not Included

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

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 90 / Caliber 90 V6 Nitro RC Helicopter, OEM/model code 21990.

  • Compatible RC Model/OEM Numbers: 21990

  • Scale: Not currently verified

  • Power Source / Fuel Type: Nitro & Glow Fuel

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

  • Drive Type: Rotor-driven helicopter

  • Vehicle Type: Class 90 Nitro RC Helicopter

  • Chassis: Kyosho Caliber 90 / V6 helicopter (21990)

  • Era: Not currently verified

  • OEM / Models: 21990

  • RC Model Terrain: Aerial Use

This Kit Details:

  • SKU: kyo072b

  • MPN: kyo072b

  • Kit Type: Metal Shielded Bearing Kit

  • Bearing Kit Piece Count: 24+ Pieces

  • 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

Bearing Size Details: Not currently verified.

OEM / Model Code / Alias Coverage:

  • 21990

Model Family Coverage: Caliber, Caliber 90, Caliber 90 V6

Product Benefits:

  • Metal shielded bearings are tuned for low drag and smooth drivetrain feel in cleaner running conditions.
  • Best for clean-surface use, race-prep, display builds, or buyers who prefer reduced rolling resistance.

Fitment Note: Confirm your Kyosho OEM/model number before ordering. Bearing sizes are included only where source-backed; otherwise they remain marked as not currently verified.

Search-Friendly Notes: Compatible Kyosho Caliber 90 / Caliber 90 V6 parts for RC maintenance, rebuilds, restoration, and model-specific fitment lookup.

Metal-Shielded Bearing Kit Details

Review the bearing-kit details below before ordering.

RCScrewZ Kit Part Number
kyo072b
Product Brand
RCScrewZ
Shielding Type
Metal-Shielded (On-Road)
Sealed Bearing Status
No
Bearing Material
Carbon Chrome Bearings
Approximate Piece Count
24+ Pieces
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. 

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

Fits: Kyosho Caliber 90 / Caliber 90 V6 Nitro Heli (21990)
$85.97
Back to Kyosho Caliber 90 (#21990) RC Helicopter — Compatible Kits by RCScrewZ (Screws & Bearings)

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