Shield type
Metal-Shielded (On-Road)
SAVE
$10.07
$10.07
Why Choose This Kit
Key features and intended use for this kit.
Performance focus
Low-drag, not sealed
Best suited for
Clean operating conditions
Metal-Shielded Bearings
RCScrewZ Metal Shielded Bearing Kit kyo076b for Kyosho Caliber M50 Class Nitro RC Helicopter (21943) | SET
Model-specific metal-shielded bearings for smooth, low-drag rotation in this RC helicopter, intended for clean operating conditions.
Fits: Kyosho Caliber M50 Class Nitro RC Helicopter (21943)
OEM / model: 21943
US
- Regular price
- $69.88
- Sale price
- $69.88
- Regular price
-
$79.95
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
- Kyosho Caliber M50 Class Nitro RC Helicopter (21943)
- OEM / model number
- 21943
- Kit type
- Metal-Shielded Bearing Kit — Low-Drag for Cleaner Running
- Scale
- 1:8
- Power
- Nitro & Glow Fuel
More compatibility details
- RC brand
- Kyosho
- Vehicle class
- Helicopter
- Kit SKU
- kyo076b
- Model series
- Caliber, Caliber M50
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 set with one spare of each included size.
- All bearing sizes listed below for this model-specific kit
- One spare of each included size
- Bearing styles vary by RC model and may include standard, flanged, one-way, or thrust bearings
Included bearing sizes for this kit:
- 2.5 x 2.4 flanged bearings
- 3x7x3mm bearings
- 3x8x4mm flanged bearings
- 4x7x2.5mm flanged bearings
- 4x8x3mm bearings
- 5x10x4mm bearings
- 5x11x5mm bearings
- 5x14x5mm bearings
- 6x13x5mm bearings
- 8x16 thrust bearing
- 10x19x5mm 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
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
- Kyosho Caliber M50 Class Nitro RC Helicopter (21943)
- Compatible RC Brand
- Kyosho
- RC Vehicle OEM / Model Number(s)
- 21943
- RCScrewZ Kit Part Number
- kyo076b
Vehicle Compatibility Details
Review these vehicle details to help confirm compatibility with your RC model.
- RC Vehicle OEM / Model Number(s)
- 21943
- RC Chassis Compatibility
- Kyosho Caliber M50 helicopter (21943)
- Compatible Vehicle Type
- Class M50 Nitro RC Helicopter
- Terrain Compatibility
- Compatible Scale
- 1:8
- Compatible Fuel Type
- Nitro & Glow Fuel
What Is Included
Included bearing sizes for this Metal-Shielded Bearing Kit:
- 2.5 x 2.4 flanged bearings
- 3x7x3mm bearings
- 3x8x4mm flanged bearings
- 4x7x2.5mm flanged bearings
- 4x8x3mm bearings
- 5x10x4mm bearings
- 5x11x5mm bearings
- 5x14x5mm bearings
- 6x13x5mm bearings
- 8x16 thrust bearing
- 10x19x5mm 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 Caliber M50 Class Nitro RC Helicopter, OEM/model code 21943.
Compatible RC Model/OEM Numbers: 21943
Scale: Not currently verified
Power Source / Fuel Type: Nitro
Battery / Cell Count: Not applicable - nitro powered.
Drive Type: Not currently verified
Vehicle Type: Class M50 Nitro RC Helicopter
Chassis: Kyosho Caliber M50 helicopter (21943)
Era: Not currently verified
OEM / Models: 21943
RC Model Terrain: Aerial Use
This Kit Details:
SKU: kyo076b
MPN: kyo076b
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
Product Material: Carbon Chrome Steel Bearings
Product Color: Silver
OEM / Model Code / Alias Coverage:
- 21943
Model Family Coverage:
- Caliber
- Caliber M50
Product Benefits:
- Metal shielded bearings are tuned for lower rolling drag and smooth drivetrain feel in cleaner running conditions.
- Best for race prep, display builds, on-road use, or buyers who prefer reduced friction over maximum contamination protection.
Bearing Size Details:
- 2.5 x 2.4 flanged bearings
- 3x7x3mm bearings
- 3x8x4mm flanged bearings
- 4x7x2.5mm flanged bearings
- 4x8x3mm bearings
- 5x10x4mm bearings
- 5x11x5mm bearings
- 5x14x5mm bearings
- 6x13x5mm bearings
- 8x16 thrust bearing
- 10x19x5mm bearings
Fitment Note: Screw kit note: this legacy screw-kit fitment is treated as a metric conversion; metal parts may need re-tapping for metric threads and axle wheel nuts remain standard thread.
Release Date: Not currently verified.
Search-Friendly Notes: Compatible with Kyosho builders searching by model name, series, and OEM/model number for the correct RCScrewZ screw kit or bearing kit.
Metal-Shielded Bearing Kit Details
Review the bearing-kit details below before ordering.
- RCScrewZ Kit Part Number
- kyo076b
- 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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Fits: Kyosho Caliber M50 Class Nitro RC Helicopter (21943)
$69.88