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Representative image of an RCScrewZ metal-shielded bearing kit for Tamiya TRF511 1/10 Electric 4WD Buggy (42139); exact bearing sizes and quantities vary by RC model.

Upgrade Your RC Car with Metal Shielded Bearings for Tamiya TRF511 42139 | tam143b - 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: '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 - tam143b

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 - tam143b

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 - tam143b

RCScrewZ and J-M SUPPLIES offer high-quality RC bearing kits, available as metal shielded or rubber sealed options, suitable for diverse RC needs - tam143b

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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 - tam143b

Infographic reminder: Refer to the item description for more detailed information about the product - tam143b

Notice: Check the product description for detailed information on the specific bearing sizes included in this bearing kit - tam143b

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 tam143b for Tamiya TRF511 1/10 Electric 4WD Off-Road Racing Buggy Chassis Kit (#42139) | SET

Name: RCScrewZ Metal Shielded Bearing Kit tam143b for Tamiya TRF511 1/10 Electric 4WD Off-Road Racing Buggy Chassis Kit (#42139) | SET
Brand: RCScrewZ
SKU: tam143b
Price: 53.67 USD
Availability: InStock

RCScrewZSKU: tam143b

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

Fits: Tamiya TRF511 1/10 Electric 4WD Buggy (42139)
OEM / model: 42139

Regular price: $53.67
Sale price: $53.67
Regular price: ~~$59.95~~
Unit price: per

In stock

View Cart

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

RC model: Tamiya TRF511 1/10 Electric 4WD Buggy (42139)
OEM / model number: 42139

Kit type: Metal-Shielded Bearing Kit — Low-Drag for Cleaner Running
Scale: 1:10
Power: Electric

View all verified kits for this model →

More compatibility details

RC brand: Tamiya
Vehicle class: Land
Kit SKU: tam143b
Model series: TRF511

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 assigned to 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

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: Tamiya TRF511 1/10 Electric 4WD Buggy (42139)
Compatible RC Brand: Tamiya
RC Vehicle OEM / Model Number(s): 42139
RCScrewZ Kit Part Number: tam143b

Vehicle Compatibility Details

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

RC Vehicle OEM / Model Number(s): 42139
RC Chassis Compatibility: Tamiya TRF511 Chassis (42139)
Compatible Vehicle Type: 1/10 Electric 4WD Off-Road Racing Buggy
Terrain Compatibility
Compatible Scale: 1:10
Compatible Fuel Type: Electric

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: Tamiya
Fit: Model-specific fitment for Tamiya TRF511 chassis kit
Compatible RC Model/OEM Numbers: 42139
Scale: 1/10
Power Source / Fuel Type: Electric
Battery / Cell Count: Not currently verified.
Drive Type: 4WD
Vehicle Type: 1/10 Electric 4WD Off-Road Racing Buggy
Chassis: Tamiya TRF511 Chassis (42139)
Era: Modern Transition (2000-2009)
OEM / Models: 42139
RC Model Terrain: Off-Road: Dirt, Clay & Carpet Tracks

This Kit Details:

SKU: tam143b
MPN: tam143b
Kit Type: Metal Shielded Bearing Kit
Bearing Type: Metal-Shielded (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: Includes Tamiya OEM/model code 42139 for TRF511 chassis kit.

Model Family Coverage: TRF511

Product Benefits:

Low-drag metal shielded bearings help reduce rolling resistance.
Best for clean, dry, low-debris running, display builds, controlled on-road use, or race-prep maintenance.
Smooth drivetrain feel for builders who prioritize lower friction over sealed contamination protection.

Fitment Note: Compatible with Tamiya TRF511 chassis kit OEM/model 42139. Metal shielded bearings are not sealed for dirt, dust, or debris protection; choose rubber shielded bearings for harsher outdoor conditions.

Search-Friendly Notes: Built for Tamiya RC parts shoppers searching for TRF511 screw kit, TRF511 bearings, Tamiya 42139 parts, Tamiya screw kit, and Tamiya bearing kit fitment.