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Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Birel R31-SE 1/5 GP 2WD Racing Kart (31315, 31315T1); exact bearing sizes and quantities vary by RC model.
Upgrade Your RC Car with Metal Shielded Bearings for Kyosho Birel R31-SE 31315 | kyo117b - High Performance Upgrade | Durable & Reliable - by J-M SUPPLIES
Infographic: 'Choose Wisely for Your Need for Speed' – Highlights Metal Shielded Bearings as the top choice for unbeatable on-road RC car performance -
Infographic: 'Choose Wisely for Off-Road Adventuring' – Recommends Rubber Sealed Bearings for maximum protection and enhanced off-road performance in RC vehicles -
Infographic: 'Choose Wisely for Your Need for Speed' – Highlights Metal Shielded Bearings as the top choice for unbeatable on-road RC car performance - kyo117b
Infographic: 'Choose Wisely for Off-Road Adventuring' – Recommends Rubber Sealed Bearings for maximum protection and enhanced off-road performance in RC vehicles - kyo117b
Infographic: 'What Matters Most to You? Performance on the Streets or Durability in the Dirt?' – Guides on selecting bearings to match your RC lifestyle, highlighting the importance of choosing based on whether your focus is speed on paved roads or resilience in off-road conditions - kyo117b
Infographic: 'Need Bearings? How to Check Your RC's Bearings for Replacement' – Instructions to remove, clean, and inspect bearings for gritty texture or improper movement, indicating the need for replacement - kyo117b
Step-by-Step Guide: Checking RC Bearings. 2. Assess if bearings feel gritty or aren't spinning freely. 3. Non-free spinning bearings impair RC performance. 4. Bearings not spinning freely may need replacement - kyo117b
RCScrewZ and J-M SUPPLIES offer high-quality RC bearing kits, available as metal shielded or rubber sealed options, suitable for diverse RC needs - kyo117b
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Infographic on RCScrewZ Bearing Kits: Highlights features of both metal and rubber shielded bearing kits, detailing high-quality components suitable for various RC models. Covers standard, flanged, one-way, and thrust bearings included in kits, with extra spares. Explains the shielding and performance benefits of each type, tailored for specific RC model needs - kyo117b
Infographic reminder: Refer to the item description for more detailed information about the product - kyo117b
Infographic reminder: Refer to the item description for more detailed information about the product - kyo117b
Notice: Check the product description for detailed information on the specific bearing sizes included in this bearing kit - kyo117b

Why Choose This Kit

Key features and intended use for this kit.

Shield type

Metal-Shielded (On-Road)

Performance focus

Low-drag, not sealed

Best suited for

Cleaner on-road / prepared surfaces

Metal-Shielded Bearings

RCScrewZ Metal Shielded Bearing Kit kyo117b for Kyosho Birel R31-SE 1/5 GP/Nitro 2WD Racing Kart Readyset (31315, 31315T1) | SET

RCScrewZSKU: kyo117b

Model-specific metal-shielded bearings for smooth, low-drag operation on cleaner on-road or prepared surfaces.

Fits: Kyosho Birel R31-SE 1/5 GP 2WD Racing Kart (31315, 31315T1)
OEM / model: 31315, 31315T1

US
Regular price
$38.94
Sale price
$38.94
Regular price
$43.95

In stock

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Confirm this kit fits your RCMatch the RC model and OEM/model number shown above to your vehicle.

Exact model check

Confirm This Fits Your RC

Match the RC model and OEM/model number below before ordering.

RC model
Kyosho Birel R31-SE 1/5 GP 2WD Racing Kart (31315, 31315T1)
OEM / model number
31315, 31315T1
Kit type
Metal-Shielded Bearing Kit — Low-Drag for Cleaner Running
Scale
1:5
Power
Nitro & Glow Fuel
View all verified kits for this model →
More compatibility details
RC brand
Kyosho
Vehicle class
Land
Kit SKU
kyo117b
Model series
Birel, Birel R31-SE, Racing Kart
Product information

Everything You Need Before Ordering

Review what is included, installation notes, shipping details, and complete kit information.

Kit Contents & Installation

What’s Included Model-specific bearing set with one spare of each included size.
  • All bearing sizes listed below for this model-specific kit
  • One spare of each included size
  • Bearing styles vary by RC model and may include standard, flanged, one-way, or thrust bearings

Included bearing sizes for this kit:

  • 5x10x4mm bearings
  • 6x10x3mm bearings
  • 8x14x4mm bearings
Installation & Model NotesImportant instructions and model-specific guidance.

Seat bearings fully and squarely. Do not force them into the housing or overtighten the hardware that retains them.

Keep metal-shielded bearings clean and dry.

After cleaning and drying, apply a small amount of light bearing oil.

Details & Support

Kit Details Lower-drag metal shields for clean, dry running conditions.
Shield Type
Metal-Shielded Bearings
Performance Priority
Lower drag
Protection
Not sealed; best kept clean and dry
Best For
Cleaner on-road or prepared surfaces when lower drag is the priority
Not Ideal For
Dust, dirt, sand, mud, water, or frequent wet-condition use
Prefer Rubber-Sealed?
Choose Rubber-Sealed bearings for off-road use, dust, dirt, sand, mud, water exposure, or lower-maintenance protection.
Shipping & Returns Handling time, current delivery estimate, and return policy.
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.

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

Full Product Description Read the complete product specifications and details.

Exact RC Model Fitment

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

Compatible RC Model
Kyosho Birel R31-SE 1/5 GP 2WD Racing Kart (31315, 31315T1)
Compatible RC Brand
Kyosho
RC Vehicle OEM / Model Number(s)
31315, 31315T1
RCScrewZ Kit Part Number
kyo117b

Vehicle Compatibility Details

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

RC Vehicle OEM / Model Number(s)
31315, 31315T1
RC Chassis Compatibility
Kyosho Birel R31-SE Racing Kart Chassis (31315T1)
Compatible Vehicle Type
1/5 GP/Nitro 2WD Racing Kart
Terrain Compatibility
Compatible Scale
1:5
Compatible Fuel Type
Nitro & Glow Fuel

What Is Included

Included bearing sizes for this Metal-Shielded Bearing Kit:

  • 5x10x4mm bearings
  • 6x10x3mm bearings
  • 8x14x4mm bearings

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 Birel R31-SE Readyset 1/5 GP/Nitro 2WD Racing Kart.

  • Compatible RC Model/OEM Numbers: 31315, 31315T1

  • Scale: 1/5

  • Power Source / Fuel Type: Nitro / GP

  • Battery / Cell Count: Not applicable

  • Drive Type: 2WD

  • Vehicle Type: 1/5 GP/Nitro 2WD Racing Kart

  • Chassis: Kyosho Birel R31-SE Racing Kart Chassis (31315T1)

  • Era: Not currently verified

  • OEM / Models: 31315, 31315T1

  • RC Model Terrain: On-Road: Kart Track & Smooth Asphalt

This Kit Details:

  • SKU: kyo117b

  • MPN: kyo117b

  • 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

Bearing Size Details:

  • 5x10x4mm bearings
  • 6x10x3mm bearings
  • 8x14x4mm bearings

OEM / Model Code / Alias Coverage: 31315, 31315T1

Model Family Coverage: Birel, Birel R31-SE, Racing Kart

Product Benefits:

  • Metal shielded bearings are built for low-drag rolling performance and a smooth drivetrain feel.
  • Best for clean on-road, display, light-duty, or race-prep conditions where lower friction is preferred over maximum contamination protection.
  • Seat bearings fully and avoid over-tightening around bearing-supported parts.

Fitment Note: This kit is intended only for the Kyosho model family and OEM/model codes listed here. Match your chassis and model number before ordering.

Search-Friendly Notes: Compatible Kyosho RC maintenance parts for Kyosho Birel R31-SE Readyset screw kit and bearings.

Metal-Shielded Bearing Kit Details

Review the bearing-kit details below before ordering.

RCScrewZ Kit Part Number
kyo117b
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. 

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

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Rubber-Sealed Bearing Kit

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Fits: Kyosho Birel R31-SE 1/5 GP 2WD Racing Kart (31315, 31315T1)
$38.94