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Representative image of an RCScrewZ metal-shielded bearing kit for Traxxas XRT 8S 1/6 4WD Race MT (78086-4); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Traxxas XRT 8S 1/6 4WD Race MT (78086-4); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Traxxas XRT 8S 1/6 4WD Race MT (78086-4); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Traxxas XRT 8S 1/6 4WD Race MT (78086-4); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Traxxas XRT 8S 1/6 4WD Race MT (78086-4); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Traxxas XRT 8S 1/6 4WD Race MT (78086-4); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Traxxas XRT 8S 1/6 4WD Race MT (78086-4); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Traxxas XRT 8S 1/6 4WD Race MT (78086-4); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Traxxas XRT 8S 1/6 4WD Race MT (78086-4); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Traxxas XRT 8S 1/6 4WD Race MT (78086-4); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Traxxas XRT 8S 1/6 4WD Race MT (78086-4); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Traxxas XRT 8S 1/6 4WD Race MT (78086-4); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Traxxas XRT 8S 1/6 4WD Race MT (78086-4); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Traxxas XRT 8S 1/6 4WD Race MT (78086-4); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Traxxas XRT 8S 1/6 4WD Race MT (78086-4); exact bearing sizes and quantities vary by RC model.

RCScrewZ Metal Shielded Bearing Kit tra107b for Traxxas XRT 8S 1/6 Electric 4WD Race Monster Truck (78086-4) | RCX

RCScrewZ

SKU: tra107b

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).
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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:

Traxxas XRT 4WD 8S 1/6th RTR Monster Race Truck (#78086-4) — 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: Traxxas
  • RC Model: Traxxas XRT 8S 1/6 4WD Race MT (78086-4)
  • Scale: 1:6
  • Power Source / Fuel Type: Electric
  • Chassis: Traxxas XRT 8S Chassis (78086-4)
  • Era: Next Gen Era (2020–Present)
  • OEM / Models: 78086-4
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: Traxxas
  • Fit: Traxxas XRT 8S 1/6 4WD Race MT (78086-4)
  • Compatible RC Model Numbers: 78086-4
  • Scale: 1:6
  • Power Source / Fuel Type: Electric
  • Vehicle Type: 1/6 Electric 4WD Race Monster Truck
  • Chassis: Traxxas XRT 8S Chassis (78086-4)
  • Era: Next Gen Era (2020–Present)
  • RC Model Terrain: Off-Road: High-Speed Bashing, Dirt & Jumps

This Kit Details

  • SKU: tra107b
  • MPN: tra107b
  • Product: Track Racing Bearing Upgrade 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: 5x11x4mm bearings · 6x13x5mm bearings · 10x15x4mm bearings · 15x24x5mm bearings · 17x26x5mm bearings · 20x32x7mm bearings
  • 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
Traxxas XRT 8S 1/6 4WD Race MT (78086-4)
Compatible RC Brand
Traxxas
RC Vehicle OEM / Model Number(s)
78086-4
RCScrewZ Kit Part Number
tra107b

Vehicle Compatibility Details

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

RC Vehicle OEM / Model Number(s)
78086-4
RC Chassis Compatibility
Traxxas XRT 8S Chassis (78086-4)
Compatible Vehicle Type
1/6 Electric 4WD Race Monster Truck
Terrain Compatibility
Compatible Scale
1:6
Compatible Fuel Type
Electric

What Is Included

Included bearing sizes for this Metal-Shielded Bearing Kit:

  • 5x11x4mm bearings
  • 6x13x5mm bearings
  • 10x15x4mm bearings
  • 15x24x5mm bearings
  • 17x26x5mm bearings
  • 20x32x7mm 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: Traxxas

  • Fit: Model-specific fitment for Traxxas XRT 8S

  • Compatible RC Model/OEM Numbers: 78086-4

  • Scale: 1/6

  • Power Source / Fuel Type: Electric

  • Battery / Cell Count: 8S

  • Drive Type: 4WD

  • Vehicle Type: Race Monster Truck

  • Chassis: Traxxas XRT 8S Chassis (78086-4)

  • Era: Next Gen Era (2020–Present)

  • OEM / Models: 78086-4

  • RC Model Terrain: Off-Road: High-Speed Bashing, Dirt & Jumps

This Kit Details:

  • SKU: tra107b

  • MPN: tra107b

  • 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:

  • 5x11x4mm bearings
  • 6x13x5mmm bearings
  • 10x15x4mm bearings
  • 15x24x5mm bearings
  • 17x26x5mm bearings
  • 20x32x7mm bearings

OEM / Model Code / Alias Coverage:

  • Compatible model reference: Traxxas XRT 8S 1/6 Electric 4WD Race Monster Truck (78086-4)
  • OEM/model number coverage: 78086-4

Model Family Coverage:

  • Designed for the Traxxas XRT 8S family. Match the OEM/model number before ordering.
  • Release / Reference Year: Next Gen XRT model-family reference.

Product Benefits:

  • Metal shielded bearings are best for cleaner running, display builds, light-duty clean-surface running, or buyers who prefer lower rolling resistance over maximum contamination protection.
  • Helps refresh drivetrain smoothness and support model-specific RC maintenance.

Fitment Note:

  • Match your Traxxas model name and OEM/model number before ordering. Do not assume fitment with similar Traxxas models unless listed here.

Search-Friendly Notes:

  • Common buyer search phrases include traxxas xrt 8s screw kit and traxxas xrt 8s bearings.

Metal-Shielded Bearing Kit Details

Review the bearing-kit details below before ordering.

RCScrewZ Kit Part Number
tra107b
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.

Fits: Traxxas XRT 8S 1/6 4WD Race MT (78086-4)
$69.88

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