Trusted PayPal checkout — fast, secure, and familiar.

SAVE
$6.28
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072); exact bearing sizes and quantities vary by RC model.
Representative image of an RCScrewZ metal-shielded bearing kit for Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072); exact bearing sizes and quantities vary by RC model.

RCScrewZ Metal Shielded Bearing Kit kyo023b for Kyosho EP Ultima RB Racing Sports 1/10 Electric 2WD Off-Road Buggy (30072) | RCX

RCScrewZ

SKU: kyo023b

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: 100

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

👇 👇 👇
View Cart & Checkout

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:

Kyosho Ultima RB Sports EP (#30072) RC Car — 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: Kyosho
  • RC Model: Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072)
  • Scale: 1:10
  • Power Source / Fuel Type: Electric
  • Chassis: Kyosho Ultima RB Racing Sports 2WD buggy chassis (30072)
  • Era: Modern Transition (2000-2009)
  • OEM / Models: 30072
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: Kyosho
  • Fit: Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072)
  • Compatible RC Model Numbers: 30072
  • Scale: 1:10
  • Power Source / Fuel Type: Electric
  • Vehicle Type: 1/10 Electric 2WD Off-Road Racing Buggy
  • Chassis: Kyosho Ultima RB Racing Sports 2WD buggy chassis (30072)
  • Era: Modern Transition (2000-2009)
  • RC Model Terrain: Off-Road: Dirt, Clay & Loose Surfaces

This Kit Details

  • SKU: kyo023b
  • MPN: kyo023b
  • Product: Performance RC Bearing Rebuild 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: 4x8x3mm bearings · 5x10x4mm bearings · 8x14x4mm bearings · 3/16″ x 3/8″ 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
Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072)
Compatible RC Brand
Kyosho
RC Vehicle OEM / Model Number(s)
30072
RCScrewZ Kit Part Number
kyo023b

Vehicle Compatibility Details

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

RC Vehicle OEM / Model Number(s)
30072
RC Chassis Compatibility
Kyosho Ultima RB Racing Sports 2WD buggy chassis (30072)
Compatible Vehicle Type
1/10 Electric 2WD 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:

  • 4x8x3mm bearings
  • 5x10x4mm bearings
  • 8x14x4mm bearings
  • 3/16″ x 3/8″ 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 EP Ultima RB Racing Sports.

  • Compatible RC Model/OEM Numbers: Kyosho EP Ultima RB Racing Sports (30072)

  • Scale: 1/10

  • Power Source / Fuel Type: Electric

  • Battery / Cell Count: Not currently verified.

  • Drive Type: 2WD

  • Vehicle Type: 1/10 Electric 2WD Off-Road Racing Buggy

  • Chassis: Kyosho Ultima RB Racing Sports 2WD buggy chassis (30072)

  • Era: Modern Transition (2000-2009)

  • OEM / Models: 30072

  • RC Model Terrain: Off-Road: Dirt, Clay & Loose Surfaces

This Kit Details:

  • SKU: kyo023b

  • MPN: kyo023b

  • 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

  • Bearing Size Details: 4x8x3mm bearings; 5x10x4mm bearings; 8x14x4mm bearings; 3/16 x 3/8 inch bearings

  • Product Material: Carbon Chrome Steel Bearings

  • Product Color: Silver

OEM / Model Code / Alias Coverage:

Compatible with Kyosho OEM/model number(s) 30072. Use the OEM/model number in your manual, box, or chassis paperwork to confirm fitment before ordering.

Model Family Coverage:

Ultima, Ultima RB, Racing Sports

Product Benefits:

  • Metal shielded bearings are tuned for lower rolling resistance and smoother drivetrain rotation on cleaner surfaces.

  • Best choice for on-road, carpet, display builds, light-duty use, or racers who prefer low-drag performance over maximum contamination protection.

  • Maintenance tip: clean and re-oil metal shielded bearings regularly for best performance.

Fitment Note:

This is a model-specific RCScrewZ kit for Kyosho EP Ultima RB Racing Sports. Match your Kyosho OEM/model number to 30072 before ordering.

Search-Friendly Notes:

Common buyer searches include Kyosho Ultima parts, Kyosho Kyosho EP Ultima RB Racing Sports screw kit, Kyosho Kyosho EP Ultima RB Racing Sports bearings, and Kyosho OEM 30072 replacement hardware.

Metal-Shielded Bearing Kit Details

Review the bearing-kit details below before ordering.

RCScrewZ Kit Part Number
kyo023b
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: Kyosho Ultima RB Racing Sports 1/10 Electric 2WD Buggy (30072)
$53.67

Trusted PayPal checkout — fast, secure, and familiar.