Shield type
Metal-Shielded (On-Road)
SAVE
$6.28
$6.28
Why Choose This Kit
Key features and intended use for this kit.
Performance focus
Low-drag, not sealed
Best suited for
Cleaner on-road / prepared surfaces
Metal-Shielded Bearings
RCScrewZ Metal Shielded Bearing Kit los135b for Losi Tenacity TT Pro RTR with Smart 1/10 Electric 4WD Trophy Truck (LOS03019) | SET
Model-specific metal-shielded bearings for smooth, low-drag operation on cleaner on-road or prepared surfaces.
Fits: Losi Tenacity TT Pro 1/10 Electric 4WD Truck (LOS03019)
OEM / model: LOS03019
US
- Regular price
- $53.67
- Sale price
- $53.67
- Regular price
-
$59.95
In stock
Confirm this kit fits your RCMatch the RC model and OEM/model number shown above to your vehicle.
Confirm This Fits Your RC
Match the RC model and OEM/model number below before ordering.
- RC model
- Losi Tenacity TT Pro 1/10 Electric 4WD Truck (LOS03019)
- OEM / model number
- LOS03019
- Kit type
- Metal-Shielded Bearing Kit — Low-Drag for Cleaner Running
- Scale
- 1:10
- Power
- Electric
More compatibility details
- RC brand
- Losi
- Vehicle class
- Land
- Kit SKU
- los135b
- Model series
- Tenacity, Tenacity TT Pro, Trophy Truck
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.
- Bearing sizes listed below for this model-specific 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.
Included bearing sizes for this kit:
- 5x8x2.5mm bearings
- 5x11x4mm bearings
- 5x13x4mm bearings
- 6x12x4mm bearings
- 10x15x4mm bearings
- 12x18x4mm bearings
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 Tenacity TT Pro 1/10 Electric 4WD Truck (LOS03019)
- Compatible RC Brand
- Losi
- RC Vehicle OEM / Model Number(s)
- LOS03019
- RCScrewZ Kit Part Number
- los135b
Vehicle Compatibility Details
Review these vehicle details to help confirm compatibility with your RC model.
- RC Vehicle OEM / Model Number(s)
- LOS03019
- RC Chassis Compatibility
- Losi TENACITY TT Pro 4WD SCT Brushless RTR with Smart (LOS03019)
- Compatible Vehicle Type
- 1/10 Electric 4WD Trophy Truck
- Terrain Compatibility
- Compatible Scale
- 1:10
- Compatible Fuel Type
- Electric
What Is Included
Included bearing sizes for this Metal-Shielded Bearing Kit:
- 5x8x2.5mm bearings
- 5x11x4mm bearings
- 5x13x4mm bearings
- 6x12x4mm bearings
- 10x15x4mm bearings
- 12x18x4mm 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: Losi
Fit: Model-specific fitment for Losi Tenacity TT Pro RTR with Smart
Compatible RC Model/OEM Numbers: LOS03019
Scale: 1/10
Power Source / Fuel Type: Electric
Battery / Cell Count: 2S/3S compatible
Drive Type: 4WD
Vehicle Type: Trophy Truck
Chassis: Losi TENACITY TT Pro 4WD SCT Brushless RTR with Smart (LOS03019)
Era: Next Gen Era (2020–Present)
OEM / Models: LOS03019
RC Model Terrain: Off-Road: Dirt, Desert & Short Course Tracks
This Kit Details:
SKU: los135b
MPN: los135b
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:
- 5x8x2.5mm bearings
- 5x11x4mm bearings
- 5x13x4mm bearings
- 6x12x4mm bearings
- 10x15x4mm bearings
- 12x18x4mm bearings
OEM / Model Code / Alias Coverage:
Verified OEM / Model Codes: LOS03019
Model Series / Search Aliases: Tenacity, Tenacity TT Pro, Trophy Truck
Model Family Coverage:
Losi Tenacity, Tenacity TT Pro, Trophy Truck 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.
Metal-Shielded Bearing Kit Details
Review the bearing-kit details below before ordering.
- RCScrewZ Kit Part Number
- los135b
- 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.
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Customer Reviews
More Verified Kits for This RC Model
These kits are verified for the same exact RC model and OEM/model number.
Stainless Screw Kit
For Losi Tenacity TT Pro 1/10 Electric 4WD Truck (LOS03019) OEM/model: LOS03019
Rubber-Sealed Bearing Kit
For Losi Tenacity TT Pro 1/10 Electric 4WD Truck (LOS03019) OEM/model: LOS03019Continue Shopping by RC Model
Fits: Losi Tenacity TT Pro 1/10 Electric 4WD Truck (LOS03019)
$53.67