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Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Concept 30 SR-X Nitro RC Helicopter (21312); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Concept 30 SR-X Nitro RC Helicopter (21312); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Concept 30 SR-X Nitro RC Helicopter (21312); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Concept 30 SR-X Nitro RC Helicopter (21312); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Concept 30 SR-X Nitro RC Helicopter (21312); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Concept 30 SR-X Nitro RC Helicopter (21312); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Concept 30 SR-X Nitro RC Helicopter (21312); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Concept 30 SR-X Nitro RC Helicopter (21312); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Concept 30 SR-X Nitro RC Helicopter (21312); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Concept 30 SR-X Nitro RC Helicopter (21312); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Concept 30 SR-X Nitro RC Helicopter (21312); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Concept 30 SR-X Nitro RC Helicopter (21312); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Concept 30 SR-X Nitro RC Helicopter (21312); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Concept 30 SR-X Nitro RC Helicopter (21312); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Concept 30 SR-X Nitro RC Helicopter (21312); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Concept 30 SR-X Nitro RC Helicopter (21312); exact bearing sizes and quantities vary by RC model.

RCScrewZ Metal Shielded Bearing Kit kyo068b for Kyosho Concept 30 SR-X Class 30 Nitro RC Helicopter (21312) | RCX

RCScrewZ

SKU: kyo068b

Regular price
$69.88
Sale price
$69.88
Regular price
$79.95
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Quick snapshot of availability, estimated delivery, and our shipping/returns.

Available Quantity: 100

Free shipping on all U.S. orders (USPS Priority Mail).
Ships within 1–2 business days (Mon–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 2–3 business days (estimates; not guaranteed).
Easy 30-day returns with prepaid USPS label; refunds issued within 3 business days after the return is received.

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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 Concept 30 SR-X (#21312) 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 Concept 30 SR-X Nitro RC Helicopter (21312)
  • Scale: Class 30 (Heli)
  • Power Source / Fuel Type: Nitro & Glow Fuel
  • Chassis: Kyosho Concept 30 SR-X helicopter (21312)
  • Era: Not currently verified
  • OEM / Models: 21312
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 Concept 30 SR-X Nitro RC Helicopter (21312)
  • Compatible RC Model Numbers: 21312
  • Scale: Class 30 (Heli)
  • Power Source / Fuel Type: Nitro & Glow Fuel
  • Vehicle Type: Class 30 Nitro RC Helicopter
  • Chassis: Kyosho Concept 30 SR-X helicopter (21312)
  • Era: Not currently verified
  • RC Model Terrain: Aerial Use

This Kit Details

  • SKU: kyo068b
  • MPN: kyo068b
  • 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: 3x8x4mm Bearings (3) · 4x10x4mm Bearings (3) · 7x14x5mm Bearings (3)
  • 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 Concept 30 SR-X Nitro RC Helicopter (21312)
Compatible RC Brand
Kyosho
RC Vehicle OEM / Model Number(s)
21312
RCScrewZ Kit Part Number
kyo068b

Vehicle Compatibility Details

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

RC Vehicle OEM / Model Number(s)
21312
RC Chassis Compatibility
Kyosho Concept 30 SR-X helicopter (21312)
Compatible Vehicle Type
Class 30 Nitro RC Helicopter
Terrain Compatibility
Compatible Scale
Class 30 (Heli)
Compatible Fuel Type
Nitro & Glow Fuel

What Is Included

Included bearing sizes for this Metal-Shielded Bearing Kit:

    • 3x8x4mm Bearings (3)
    • 4x10x4mm Bearings (3)
    • 7x14x5mm Bearings (3)

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 Concept 30 SR-X Class 30 Nitro RC Helicopter, OEM/model code 21312.

  • Compatible RC Model/OEM Numbers: 21312

  • 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 30 Nitro RC Helicopter

  • Chassis: Kyosho Concept 30 SR-X helicopter (21312)

  • Era: Not currently verified

  • OEM / Models: 21312

  • RC Model Terrain: Aerial Use

This Kit Details:

  • SKU: kyo068b

  • MPN: kyo068b

  • Kit Type: Metal Shielded Bearing Kit

  • Bearing Kit Piece Count: 9+ 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:

  • 3x8x4mm bearings (3)
  • 4x10x4mm bearings (3)
  • 7x14x5mm bearings (3)

OEM / Model Code / Alias Coverage:

  • 21312

Model Family Coverage: Concept, Concept 30, Concept 30 SR-X

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 Concept 30 SR-X 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
kyo068b
Product Brand
RCScrewZ
Shielding Type
Metal-Shielded (On-Road)
Sealed Bearing Status
No
Bearing Material
Carbon Chrome Bearings
Approximate Piece Count
9+ 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 Concept 30 SR-X Nitro RC Helicopter (21312)
$69.88
Back to Kyosho Concept 30 SR-X (#21312) RC Helicopter — Compatible Kits by RCScrewZ (Screws & Bearings)

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