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Representative image of an RCScrewZ metal-shielded bearing kit for Traxxas TXC-4M Extreme Crawler 1/18 3S Brushless 4WD (120074-1); exact bearing sizes and quantities vary by RC model.
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Why Choose This Kit

Key features and intended use for this kit.

Shield type

Metal-Shielded

Performance focus

Not sealed

Best suited for

Cleaner on-road / prepared surfaces

Metal-Shielded Bearings

RCScrewZ Metal Shielded Bearing Kit tra186b for Traxxas TXC-4M Extreme Crawler 1/18 Electric 3S Brushless 4WD (#120074-1) | SET

RCScrewZSKU: tra186b

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

Fits: Traxxas TXC-4M Extreme Crawler 1/18 3S Brushless 4WD (120074-1)
OEM / model: 120074-1

US
Regular price
$54.93
Sale price
$54.93
Regular price
$59.95

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
Traxxas TXC-4M Extreme Crawler 1/18 3S Brushless 4WD (120074-1)
OEM / model number
120074-1
Kit type
Metal-Shielded Bearing Kit — Low-Drag for Cleaner Running
Scale
1:18
Power
Electric
View all verified kits for this model →
More compatibility details
RC brand
Traxxas
Terrain
Off-road
Vehicle class
Land
Kit SKU
tra186b
Model series
TXC-4M, TXC-4M Extreme Crawler
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 kit; review the listed sizes and quantities.
  • Model-specific bearing kit
  • Quantities and any spare bearings are included only when specifically confirmed in the product details.
  • Review the product-specific bearing sizes and styles below or in the full description.
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 when protection against dirt, dust, and debris matters more than the lowest possible drag.
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
Traxxas TXC-4M Extreme Crawler 1/18 3S Brushless 4WD (120074-1)
Compatible RC Brand
Traxxas
RC Vehicle OEM / Model Number(s)
120074-1
RCScrewZ Kit Part Number
tra186b

Vehicle Compatibility Details

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

RC Vehicle OEM / Model Number(s)
120074-1
RC Chassis Compatibility
TXC-4M monocoque chassis (120074-1)
Compatible Vehicle Type
1/18 Electric 4WD Rock Crawler
Terrain Compatibility
Off-road
Compatible Scale
1:18
Compatible Fuel Type
Electric

What Is Included

Included bearing sizes for this Metal-Shielded Bearing Kit:

    Not currently verified.

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:

Traxxas TXC-4M Extreme Crawler (120074-1)

Quick Fit Summary:

  • Compatible Brand: Traxxas
  • Fit: Model-specific fitment for Traxxas TXC-4M Extreme Crawler
  • Compatible RC Model/OEM Numbers: 120074-1
  • Scale: 1/18
  • Power Source / Fuel Type: Electric, 3S brushless
  • Battery / Cell Count: 3S (3 cells), LiPo
  • Drive Type: 4WD
  • Vehicle Type: Rock Crawler
  • Chassis: TXC-4M monocoque chassis (120074-1)
  • Era: Next Gen Era (2020-Present)
  • OEM / Models: 120074-1
  • RC Model Terrain: Off-Road

This Kit Details:

  • SKU: tra186b
  • MPN: tra186b
  • 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 Quantities: Not currently verified.

Bearing Size Details: Not currently verified.

OEM / Model Code / Alias Coverage: 120074-1 only. Additional OEM and retail-code aliases are not currently verified.

Model Family Coverage: Traxxas TXC-4M Extreme Crawler (120074-1). Kit fitment is limited to this exact model and OEM.

Product Benefits:

  • Reduced friction and low-drag performance help maintain a smooth drivetrain feel.
  • Best suited to clean, dry, low-debris conditions, controlled running and bench rebuilds.

Fitment Note: Confirm model 120074-1 before ordering. Fitment to TRX-4M, other TXC-4M versions, related chassis or modified vehicles is not currently verified.

Installation: Follow the Traxxas manual and compare the original fastener or bearing with its replacement before installation. Inspect and clean the assembly during service.

Release / Reference Date: Official owner manual copyright 2026; this is a reference year, not a verified retail release date. Exact release date: Not currently verified.

Search-Friendly Notes: Traxxas TXC-4M Extreme Crawler; 120074-1; 1/18 electric 3S brushless 4WD rock crawler; monocoque chassis; RCScrewZ tra186b Metal Shielded Bearing Kit.

Metal-Shielded Bearing Kit Details

Review the bearing-kit details below before ordering.

RCScrewZ Kit Part Number
tra186b
Product Brand
RCScrewZ
Shielding Type
Metal-Shielded
Sealed Bearing Status
No
Bearing Material
Carbon Chrome Steel
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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Fits: Traxxas TXC-4M Extreme Crawler 1/18 3S Brushless 4WD (120074-1)
$54.93