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Representative image of an RCScrewZ metal-shielded bearing kit for Losi Hammer Rey U4 1/10 Electric 4WD Buggy (LOS03030); exact bearing sizes and quantities vary by RC model.

Upgrade Your RC Car with Metal Shielded Bearings for Losi Hammer Rey U4 1/10 | los132b - 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 - los132b

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 - los132b

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 - los132b

RCScrewZ and J-M SUPPLIES offer high-quality RC bearing kits, available as metal shielded or rubber sealed options, suitable for diverse RC needs - los132b

Elevate Your RC Adventure! Image introducing Stainless Screw Kits as the Ultimate Upgrade. Offers enhanced durability, superior corrosion resistance, and a sleek look, making them a top choice for complementing high-quality bearing selections. Trusted by RC enthusiasts worldwide - los132b

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 - los132b

Infographic reminder: Refer to the item description for more detailed information about the product - los132b

Notice: Check the product description for detailed information on the specific bearing sizes included in this bearing kit - los132b

J-M SUPPLIES - RCScrewZ Metal Shielded Bearings los132b for Losi Hammer Rey U4 4WD 1/10 (LOS03030) Rock Racer | SET -

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 los132b for Losi Hammer Rey U4 RTR Brushless 1/10 Electric 4WD Rock Racer Desert Buggy (LOS03030) | SET

Name: RCScrewZ Metal Shielded Bearing Kit los132b for Losi Hammer Rey U4 RTR Brushless 1/10 Electric 4WD Rock Racer Desert Buggy (LOS03030) | SET
Brand: RCScrewZ
SKU: los132b
Price: 38.94 USD
Availability: InStock

RCScrewZSKU: los132b

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

Fits: Losi Hammer Rey U4 1/10 Electric 4WD Buggy (LOS03030)
OEM / model: LOS03030

Regular price: $38.94
Sale price: $38.94
Regular price: ~~$43.95~~
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: Losi Hammer Rey U4 1/10 Electric 4WD Buggy (LOS03030)
OEM / model number: LOS03030

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: Losi
Vehicle class: Land
Kit SKU: los132b
Model series: Hammer Rey, Hammer Rey U4, Rey

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: Losi Hammer Rey U4 1/10 Electric 4WD Buggy (LOS03030)
Compatible RC Brand: Losi
RC Vehicle OEM / Model Number(s): LOS03030
RCScrewZ Kit Part Number: los132b

Vehicle Compatibility Details

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

RC Vehicle OEM / Model Number(s): LOS03030
RC Chassis Compatibility: Losi Hammer Rey 3S 4X4 RTR Brushless Desert Buggy (LOS03030)
Compatible Vehicle Type: 1/10 Electric 4WD Rock Racer Desert 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: Losi
Fit: Model-specific fitment for Losi Hammer Rey U4 RTR Brushless
Compatible RC Model/OEM Numbers: LOS03030
Scale: 1/10
Power Source / Fuel Type: Electric
Battery / Cell Count: 2S/3S compatible
Drive Type: 4WD
Vehicle Type: Rock Racer Desert Buggy
Chassis: Losi Hammer Rey 3S 4X4 RTR Brushless Desert Buggy (LOS03030)
Era: Next Gen Era (2020–Present)
OEM / Models: LOS03030
RC Model Terrain: Off-Road: Desert, Trail, Rock & Dirt

This Kit Details:

SKU: los132b
MPN: los132b
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:

Verified OEM / Model Codes: LOS03030
Model Series / Search Aliases: Hammer Rey, Hammer Rey U4, Rey

Model Family Coverage:

Losi Hammer Rey, Hammer Rey U4, Rey fitment coverage is limited to the OEM/model numbers listed above. Do not assume fitment with nearby Losi/TLR variants unless they share the same verified kit listing.

Product Benefits:

Metal shielded bearings are a low-drag choice for cleaner running, display builds, light-duty use, carpet/asphalt use, and buyers who prefer smoother rolling efficiency over maximum contamination protection.

Fitment Note: Match the OEM/model number and vehicle description before ordering. This kit is intended for the listed Losi/TLR model family only.

Search-Friendly Notes: Useful buyer search phrases include Losi parts, Team Losi parts, TLR parts, Losi screw kit, Losi bearing kit, TLR 8IGHT, 22X-4, Mini JRX2, Hammer Rey, RZR Rey, LMT, and Tenacity where they match the specific model above.