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Representative image of an RCScrewZ rubber-sealed bearing kit for Marui Ninja 4WD 1/10 Electric Off-Road Buggy; exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ rubber-sealed bearing kit for Marui Ninja 4WD 1/10 Electric Off-Road Buggy; exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ rubber-sealed bearing kit for Marui Ninja 4WD 1/10 Electric Off-Road Buggy; exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ rubber-sealed bearing kit for Marui Ninja 4WD 1/10 Electric Off-Road Buggy; exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ rubber-sealed bearing kit for Marui Ninja 4WD 1/10 Electric Off-Road Buggy; exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ rubber-sealed bearing kit for Marui Ninja 4WD 1/10 Electric Off-Road Buggy; exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ rubber-sealed bearing kit for Marui Ninja 4WD 1/10 Electric Off-Road Buggy; exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ rubber-sealed bearing kit for Marui Ninja 4WD 1/10 Electric Off-Road Buggy; exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ rubber-sealed bearing kit for Marui Ninja 4WD 1/10 Electric Off-Road Buggy; exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ rubber-sealed bearing kit for Marui Ninja 4WD 1/10 Electric Off-Road Buggy; exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ rubber-sealed bearing kit for Marui Ninja 4WD 1/10 Electric Off-Road Buggy; exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ rubber-sealed bearing kit for Marui Ninja 4WD 1/10 Electric Off-Road Buggy; exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ rubber-sealed bearing kit for Marui Ninja 4WD 1/10 Electric Off-Road Buggy; exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ rubber-sealed bearing kit for Marui Ninja 4WD 1/10 Electric Off-Road Buggy; exact bearing sizes and quantities vary by RC model.

RCScrewZ Rubber Shielded Bearings mar004r for Marui Ninja 4WD 1/10 Electric Off-Road Buggy | RCX

RCScrewZ

SKU: mar004r

Regular price
$53.67
Sale price
$53.67
Regular price
$59.95
Shipping, stock & payment info
Quick snapshot of availability, estimated delivery, and our shipping/returns.

Available Quantity: 99

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

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This page shows the Rubber-Shielded Bearing Kit for this RC model — view all compatible Screw and Bearing kits for this RC model by clicking this link:

Marui Ninja 4WD 1/10 Electric Off-Road Buggy — Find Compatible Stainless Screw & Bearing Kits

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: Marui
  • RC Model: Marui Ninja 4WD 1/10 Electric Off-Road Buggy
  • Scale: 1:10
  • Power Source / Fuel Type: Electric
  • Chassis: Marui Ninja 4WD Shaft-Drive Tub Chassis
  • Era: Early Classics (1980-1989)
  • OEM / Models: Marui Ninja 4WD, Tokyo Marui Ninja 4WD
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: Marui
  • Fit: Marui Ninja 4WD 1/10 Electric Off-Road Buggy
  • Compatible RC Model Numbers: Marui Ninja 4WD · Tokyo Marui Ninja 4WD
  • Scale: 1:10
  • Power Source / Fuel Type: Electric
  • Vehicle Type: 1/10 Electric 4WD Off-Road Buggy
  • Chassis: Marui Ninja 4WD Shaft-Drive Tub Chassis
  • Era: Early Classics (1980-1989)
  • RC Model Terrain: Off-Road: Dirt, Grass & Loose Gravel

This Kit Details

  • SKU: mar004r
  • MPN: mar004r
  • Product: RC Model Specific Rubber Shielded Bearing Kit (Sealed Bearings)
  • Bearing Type: Rubber-Sealed (Off-Road)
  • Sealed Bearings: Yes
  • Water/Dust Protection: Sealed against dirt & splash
  • Product Material: Carbon Chrome Steel
  • Product Color: Silver
  • Bearing Sizes Included: 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!
  • 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
Marui Ninja 4WD 1/10 Electric Off-Road Buggy
Compatible RC Brand
Marui
RC Vehicle OEM / Model Number(s)
RCScrewZ Kit Part Number
mar004r

Vehicle Compatibility Details

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

RC Vehicle OEM / Model Number(s)
RC Chassis Compatibility
Marui Ninja 4WD Shaft-Drive Tub Chassis
Compatible Vehicle Type
1/10 Electric 4WD Off-Road Buggy
Terrain Compatibility
Off-road
Compatible Scale
1:10
Compatible Fuel Type
Electric

What Is Included

Included bearing sizes for this Rubber-Sealed 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

Rubber Shielded Bearing Kit Compatibility (Off-Road / Dusty On-Road):

  • Compatible with the Marui Ninja 4WD 1/10 Electric Off-Road Buggy.
  • Brand: Marui / Tokyo Marui.
  • Scale: 1/10.
  • Fuel Type: Electric.
  • Vehicle Type: 4WD Off-Road Buggy.
  • Chassis: Marui Ninja 4WD shaft-driven molded tub chassis.
  • Terrain Compatibility: Off-road dirt, loose gravel, grass, dusty track days, and general vintage buggy running.
  • Release Date: 1987.
  • Production Era: Early Classics (1980-1989).
  • Model/Alias Coverage: Marui Ninja 4WD, Tokyo Marui Ninja 4WD.
  • Series: Ninja 4WD / Marui 4WD Buggy.

Benefits:

  • Rubber shielded bearings help block dirt, dust, and light moisture for longer service life in off-road use.
  • Excellent upgrade for models that originally used nylon bushings or older bearing setups.
  • Ideal for vintage RC owners who want smoother running with better contamination protection.

Reason to Purchase:

  • If your Marui Ninja will be driven on dirt or loose surfaces, rubber shielded bearings are the better long-term choice because they help keep grit out and reduce wear compared with open bushings or lightly shielded setups.

Common Search Phrases Buyers Use:

  • Marui Ninja sealed bearing kit
  • Marui Ninja rubber shielded bearings
  • Marui Ninja 4WD sealed bearings
  • Tokyo Marui Ninja bearing upgrade
  • vintage Marui buggy sealed bearings
  • Marui Ninja off road bearing kit

Rubber-Sealed Bearing Kit Details

Review the bearing-kit details below before ordering.

RCScrewZ Kit Part Number
mar004r
Product Brand
RCScrewZ
Shielding Type
Rubber-Sealed (Off-Road)
Sealed Bearing Status
Yes
Bearing Material
Carbon Chrome Steel
Approximate Piece Count
Piece count information will be available shortly.
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: Marui Ninja 4WD 1/10 Electric Off-Road Buggy
$53.67

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