Shield type
Metal Shielded Bearing Kit
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 ser109b for Serpent Medius X25 Carbon/Steel 1/10 Electric On-Road Touring Car (#400049, #400050) | SET
Model-specific metal-shielded bearings for smooth, low-drag operation on cleaner on-road or prepared surfaces.
Fits: Serpent Medius X25 Carbon/Steel 1/10 Electric (400049, 400050)
OEM / model: 400049, SER400049, 400050, SER400050
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
- Serpent Medius X25 Carbon/Steel 1/10 Electric (400049, 400050)
- OEM / model number
- 400049, SER400049, 400050, SER400050
- Kit type
- Metal-Shielded Bearing Kit — Low-Drag for Cleaner Running
- Scale
- 1:10
- Power
- Electric
More compatibility details
- RC brand
- Serpent
- Terrain
- On-road
- Vehicle class
- Land
- Kit SKU
- ser109b
- Model series
- Medius, Medius X25, X25, X25 Carbon, X25 Steel
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
- Serpent Medius X25 Carbon/Steel 1/10 Electric (400049, 400050)
- Compatible RC Brand
- Serpent
- RC Vehicle OEM / Model Number(s)
- 400049, SER400049, 400050, SER400050
- RCScrewZ Kit Part Number
- ser109b
Vehicle Compatibility Details
Review these vehicle details to help confirm compatibility with your RC model.
- RC Vehicle OEM / Model Number(s)
- 400049, SER400049, 400050, SER400050
- RC Chassis Compatibility
- 400049: 2.25mm symmetrical carbon chassis; 400050: machined 1.2mm steel chassis.
- Compatible Vehicle Type
- 1/10 Electric On-Road Touring Car
- Terrain Compatibility
- On-road
- Compatible Scale
- 1:10
- Compatible Fuel Type
- Electric
What Is Included
Included bearing sizes for this Metal-Shielded Bearing Kit:
Not currently verified.
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: Serpent Medius X25 Carbon/Steel (400049, 400050)
Quick Fit Summary: 1/10 Electric On-Road Touring Car
- Compatible Brand: Serpent
- Compatible RC Model/OEM Numbers: 400049, 400050
- Scale: 1/10
- Power Source / Fuel Type: Electric
- Drive Type: Not currently verified.
- Vehicle Type: On-Road Touring Car
- RC Model Terrain: On-road
- Chassis: 400049: 2.25mm symmetrical carbon chassis; 400050: machined 1.2mm steel chassis.
- Battery Chemistry: Not currently verified.
- Battery / Cell Count: Not currently verified.
- Production Era: Next Gen Era (2020–Present)
- Release / Reference Date: 2025-04-23 official X25 Carbon/Steel release announcement.
This Kit Details: ser109b — Metal Shielded Bearing Kit
Product Material: Carbon Chrome Steel
Bearing sizes: Not currently verified.
Other bearing sizes, quantities and spare quantities: Not currently verified.
OEM / Model Code / Alias Coverage: 400049, 400050; official retail/model-code aliases: SER400049, SER400050.
Model Family Coverage: Serpent Medius X25 Carbon/Steel (400049, 400050). Fitment is limited to this exact model and OEM.
Product Benefits:
- Metal shields and reduced rolling drag support smooth drivetrain operation.
- Best suited to clean, dry, low-debris on-road or race conditions.
Reason to Purchase: Choose metal shields when low drag in clean, dry conditions is the priority.
Fitment Note: Confirm the exact model and OEM before ordering. Do not assume fitment to other versions, related chassis, conversions or similarly named vehicles.
Installation: Follow the RC manufacturer’s assembly and maintenance instructions. Confirm each fastener or bearing location before replacement.
Search-Friendly Notes: Serpent Medius X25 Carbon/Steel 1/10 Electric On-Road Touring Car; Metal Shielded Bearing Kit; RCScrewZ ser109b; OEM 400049, 400050.
Metal-Shielded Bearing Kit Details
Review the bearing-kit details below before ordering.
- RCScrewZ Kit Part Number
- ser109b
- Product Brand
- RCScrewZ
- Shielding Type
- Metal Shielded Bearing Kit
- Sealed Bearing Status
- No
- Bearing Material
- Carbon Chrome Steel
- Approximate Piece Count
- Not currently verified.
- 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 Serpent Medius X25 Carbon/Steel 1/10 Electric (400049, 400050) OEM/model: 400049, SER400049, 400050, SER400050
Rubber-Sealed Bearing Kit
For Serpent Medius X25 Carbon/Steel 1/10 Electric (400049, 400050) OEM/model: 400049, SER400049, 400050, SER400050Continue Shopping by RC Model
Fits: Serpent Medius X25 Carbon/Steel 1/10 Electric (400049, 400050)
$53.67