5120A RC Bearing Replacement Guide
5120A RC Bearing Replacement Guide
This guide explains the 5120A bearing reference using the compatibility, bearing sizes, locations and product data currently listed by 888-RC. Use it to identify the bearing size, the vehicle models where this reference appears, and the related replacement bearings or kits that include it.
OEM Bearing Summary
- OEM/reference part number: 5120A
- Listed bearing size: 12x18x4
- Listed bearing type: rubber sealed
- Compatible models listed: 17
- Common applications: hub or differential support, BL-2S/EHD hub carriers, driveline support, hub carriers and driveline and hub or driveline support
Compatible Models and Bearing Locations
The table below lists the vehicles and applications where this OEM/reference number appears in the current catalogue data.
| Vehicle | Scale | Model/version notes | Bearing size | Quantity in complete kit | Application | Confidence |
|---|---|---|---|---|---|---|
| Traxxas Slash 4X4 | 1/10 | VXL; Ultimate; LCG Ultimate; BL-2S has different hub/centre counts; verify before listing as compatible | 12x18x4 | 1 |
|
low |
| Traxxas Slash 4X4 BL-2S | 1/10 | BL-2S; Ford F-150 Raptor R BL-2S; verify body-specific chassis fitment | 12x18x4 | 5 |
|
medium |
| Traxxas Rustler 4X4 | 1/10 | VXL; BL-2S requires verification; Ultimate/EHD requires hub-bearing verification | 12x18x4 | 1 |
|
low |
| Traxxas Rustler 4X4 BL-2S | 1/10 | BL-2S | 12x18x4 | 5 |
|
medium |
| Traxxas X-Maxx | 1/6 | 8S 77096-4; Ultimate 77097-4; current big-bearing hub spec used; older 6S/pre-2024 trucks differ | 12x18x4 | 1 |
|
low |
| Traxxas X-Maxx 6S Original | 1/6 | Original 6S; older pre-big-bearing X-Maxx only | 12x18x4 | 1 |
|
medium |
| Traxxas Maxx | 1/10 | 4S 89076-4; V2/WideMaxx 89086-4 verify before listing together | 12x18x4 | 7 |
|
medium |
| Traxxas Stampede 4X4 | 1/10 | Stampede 4X4 VXL; standard 4X4 platform; BL-2S references differ and should be listed separately if needed | 12x18x4 | 1 |
|
medium |
| Traxxas Hoss 4X4 | 1/10 | Hoss 4X4 VXL; Model 90076-4 | 12x18x4 | 1 |
|
medium |
| Traxxas Stampede 4X4 BL-2S | 1/10 | Stampede 4X4 BL-2S | 12x18x4 | 5 |
|
medium |
| Traxxas Ford Fiesta ST Rally BL-2S | 1/10 | Ford Fiesta ST Rally BL-2S | 12x18x4 | 5 |
|
medium |
| Traxxas Slash 4X4 Ultimate | 1/10 | Slash 4X4 Ultimate | 12x18x4 | 1 |
|
medium |
| Traxxas Rustler 4X4 Ultimate | 1/10 | Rustler 4X4 Ultimate | 12x18x4 | 1 |
|
medium |
| Traxxas BIGFOOT 4X4 BL-2S | 1/10 | BIGFOOT 4X4 BL-2S | 12x18x4 | 5 |
|
medium |
| Traxxas Ford Raptor R 4X4 | 1/10 | Ford Raptor R 4X4 | 12x18x4 | 5 |
|
medium |
| Traxxas Hoss 4X4 VXL | 1/10 | Hoss 4X4 VXL; Model 90076-4 | 12x18x4 | 1 |
|
medium |
| Traxxas Jato 4X4 VXL | 1/10 | Jato 4X4 VXL; Model 90386-4 | 12x18x4 | 5 |
|
medium |
Direct Replacement Bearing Products
These individual replacement bearing products match 5120A by OEM/reference number or by the listed bearing size for a compatible vehicle.
| Product | SKU | Size | Compatible vehicles | Product link |
|---|---|---|---|---|
| 12x18x4 RC Bearing for Traxxas Slash 4X4 (5120, 5120A) | 888RC-BRG-12X18X4-TRX5120A | 12x18x4 | Traxxas Slash 4X4 | View bearing |
| 12x18x4 RC Bearing for Traxxas Slash 4X4 BL-2S (5120A) | 888RC-BRG-12X18X4-5120A | 12x18x4 | Traxxas Slash 4X4 BL-2S | View bearing |
| 12x18x4 RC Bearing for Traxxas Rustler 4X4 (5120, 5120A) | 888RC-BRG-12X18X4-TRX5120A-RUSTLER4X4 | 12x18x4 | Traxxas Rustler 4X4 | View bearing |
| 12x18x4 RC Bearing for Traxxas Rustler 4X4 BL-2S (5120A) | 888RC-BRG-12X18X4-5120A-RUSTLER4X4BL2S | 12x18x4 | Traxxas Rustler 4X4 BL-2S | View bearing |
| 12x18x4 RC Bearing for Traxxas X-Maxx 6S Original (5120A) | 888RC-BRG-12X18X4-5120A-XMAXX6SORIGINAL | 12x18x4 | Traxxas X-Maxx 6S Original | View bearing |
| 12x18x4 RC Bearing for Traxxas Maxx (5120A) | 888RC-BRG-12X18X4-TRX5120A-MAXX | 12x18x4 | Traxxas Maxx | View bearing |
| 12x18x4 RC Bearing for Traxxas Stampede 4X4 (5120, 5120A) | 888RC-BRG-12X18X4-TRX-STAMPEDE4X4 | 12x18x4 | Traxxas Stampede 4X4 | View bearing |
| 12x18x4 RC Bearing for Traxxas Hoss 4X4 (5120, 5120A) | 888RC-BRG-12X18X4-TRX-HOSS4X4 | 12x18x4 | Traxxas Hoss 4X4 | View bearing |
| 12x18x4 RC Bearing for Traxxas Stampede 4X4 BL-2S (5120, 5120A) | 888RC-BRG-12X18X4-TRX-STAMPEDE4X4BL2S | 12x18x4 | Traxxas Stampede 4X4 BL-2S | View bearing |
| 12x18x4 RC Bearing for Traxxas Ford Fiesta ST Rally BL-2S (5120, 5120A) | 888RC-BRG-12X18X4-TRX-FIESTASTRALLYBL2S | 12x18x4 | Traxxas Ford Fiesta ST Rally BL-2S | View bearing |
| 12x18x4 RC Bearing for Traxxas Slash 4X4 Ultimate (5120, 5120A) | 888RC-BRG-12X18X4-TRX-SLASH4X4ULTIMATE | 12x18x4 | Traxxas Slash 4X4 Ultimate | View bearing |
| 12x18x4 RC Bearing for Traxxas Rustler 4X4 Ultimate (5120, 5120A) | 888RC-BRG-12X18X4-TRX-RUSTLER4X4ULTIMATE | 12x18x4 | Traxxas Rustler 4X4 Ultimate | View bearing |
| 12x18x4 RC Bearing for Traxxas BIGFOOT 4X4 BL-2S (5120, 5120A) | 888RC-BRG-12X18X4-TRX-BIGFOOT4X4BL2S | 12x18x4 | Traxxas BIGFOOT 4X4 BL-2S | View bearing |
| 12x18x4 RC Bearing for Traxxas Ford Raptor R 4X4 (5120, 5120A) | 888RC-BRG-12X18X4-TRX-FORDRAPTORR4X4 | 12x18x4 | Traxxas Ford Raptor R 4X4 | View bearing |
| 12x18x4 RC Bearing for Traxxas Hoss 4X4 VXL (5120, 5120A) | 888RC-BRG-12X18X4-TRX-HOSS4X4VXL | 12x18x4 | Traxxas Hoss 4X4 VXL | View bearing |
| 12x18x4 RC Bearing for Traxxas Jato 4X4 VXL (5120, 5120A) | 888RC-BRG-12X18X4-TRX-JATO4X4VXL | 12x18x4 | Traxxas Jato 4X4 VXL | View bearing |
Bearing Kits That Include This Reference
These complete and assembly-specific kits include a bearing listed with 5120A.
| Kit | Vehicle | SKU | Kit type | Product link |
|---|---|---|---|---|
| Traxxas Slash 4X4 Complete Bearing Kit | Traxxas Slash 4X4 | 888RC-TRX-SLASH4X4-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas Slash 4X4 Rear Hub Bearing Kit | Traxxas Slash 4X4 | 888RC-TRX-SLASH4X4-RHUB-BRG | rear_hub_bearing_kit | View kit |
| Traxxas Slash 4X4 BL-2S Complete Bearing Kit | Traxxas Slash 4X4 BL-2S | 888RC-TRX-SLASH4X4BL2S-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas Slash 4X4 BL-2S Hub Bearing Kit | Traxxas Slash 4X4 BL-2S | 888RC-TRX-SLASH4X4BL2S-HUB-BRG | hub_bearing_kit | View kit |
| Traxxas Rustler 4X4 Complete Bearing Kit | Traxxas Rustler 4X4 | 888RC-TRX-RUSTLER4X4-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas Rustler 4X4 Rear Hub Bearing Kit | Traxxas Rustler 4X4 | 888RC-TRX-RUSTLER4X4-RHUB-BRG | rear_hub_bearing_kit | View kit |
| Traxxas Rustler 4X4 BL-2S Complete Bearing Kit | Traxxas Rustler 4X4 BL-2S | 888RC-TRX-RUSTLER4X4BL2S-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas Rustler 4X4 BL-2S Hub Bearing Kit | Traxxas Rustler 4X4 BL-2S | 888RC-TRX-RUSTLER4X4BL2S-HUB-BRG | hub_bearing_kit | View kit |
| Traxxas X-Maxx Complete Bearing Kit | Traxxas X-Maxx | 888RC-TRX-XMAXX-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas X-Maxx Transmission Bearing Kit | Traxxas X-Maxx | 888RC-TRX-XMAXX-TRANS-BRG | transmission_bearing_kit | View kit |
| Traxxas X-Maxx 6S Original Complete Bearing Kit | Traxxas X-Maxx 6S Original | 888RC-TRX-XMAXX6SORIGINAL-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas X-Maxx 6S Original Hub Bearing Kit | Traxxas X-Maxx 6S Original | 888RC-TRX-XMAXX6SORIGINAL-HUB-BRG | hub_bearing_kit | View kit |
| Traxxas Maxx Complete Bearing Kit | Traxxas Maxx | 888RC-TRX-MAXX-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas Maxx Front Hub Bearing Kit | Traxxas Maxx | 888RC-TRX-MAXX-FHUB-BRG | front_hub_bearing_kit | View kit |
| Traxxas Maxx Rear Hub Bearing Kit | Traxxas Maxx | 888RC-TRX-MAXX-RHUB-BRG | rear_hub_bearing_kit | View kit |
| Traxxas Stampede 4X4 Complete Bearing Kit | Traxxas Stampede 4X4 | 888RC-TRX-STAMPEDE4X4-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas Stampede 4X4 Transmission Bearing Kit | Traxxas Stampede 4X4 | 888RC-TRX-STAMPEDE4X4-TRANS-BRG | transmission_bearing_kit | View kit |
| Traxxas Hoss 4X4 Complete Bearing Kit | Traxxas Hoss 4X4 | 888RC-TRX-HOSS4X4-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas Hoss 4X4 Hub Bearing Kit | Traxxas Hoss 4X4 | 888RC-TRX-HOSS4X4-HUB-BRG | hub_bearing_kit | View kit |
| Traxxas Stampede 4X4 BL-2S Complete Bearing Kit | Traxxas Stampede 4X4 BL-2S | 888RC-TRX-STAMPEDE4X4BL2S-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas Stampede 4X4 BL-2S Hub Bearing Kit | Traxxas Stampede 4X4 BL-2S | 888RC-TRX-STAMPEDE4X4BL2S-HUB-BRG | hub_bearing_kit | View kit |
| Traxxas Ford Fiesta ST Rally BL-2S Complete Bearing Kit | Traxxas Ford Fiesta ST Rally BL-2S | 888RC-TRX-FIESTASTRALLYBL2S-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas Ford Fiesta ST Rally BL-2S Hub Bearing Kit | Traxxas Ford Fiesta ST Rally BL-2S | 888RC-TRX-FIESTASTRALLYBL2S-HUB-BRG | hub_bearing_kit | View kit |
| Traxxas Slash 4X4 Ultimate Complete Bearing Kit | Traxxas Slash 4X4 Ultimate | 888RC-TRX-SLASH4X4ULTIMATE-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas Slash 4X4 Ultimate Hub Bearing Kit | Traxxas Slash 4X4 Ultimate | 888RC-TRX-SLASH4X4ULTIMATE-HUB-BRG | hub_bearing_kit | View kit |
| Traxxas Rustler 4X4 Ultimate Complete Bearing Kit | Traxxas Rustler 4X4 Ultimate | 888RC-TRX-RUSTLER4X4ULTIMATE-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas Rustler 4X4 Ultimate Hub Bearing Kit | Traxxas Rustler 4X4 Ultimate | 888RC-TRX-RUSTLER4X4ULTIMATE-HUB-BRG | hub_bearing_kit | View kit |
| Traxxas BIGFOOT 4X4 BL-2S Complete Bearing Kit | Traxxas BIGFOOT 4X4 BL-2S | 888RC-TRX-BIGFOOT4X4BL2S-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas BIGFOOT 4X4 BL-2S Hub Bearing Kit | Traxxas BIGFOOT 4X4 BL-2S | 888RC-TRX-BIGFOOT4X4BL2S-HUB-BRG | hub_bearing_kit | View kit |
| Traxxas Ford Raptor R 4X4 Complete Bearing Kit | Traxxas Ford Raptor R 4X4 | 888RC-TRX-FORDRAPTORR4X4-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas Ford Raptor R 4X4 Hub Bearing Kit | Traxxas Ford Raptor R 4X4 | 888RC-TRX-FORDRAPTORR4X4-HUB-BRG | hub_bearing_kit | View kit |
| Traxxas Hoss 4X4 VXL Complete Bearing Kit | Traxxas Hoss 4X4 VXL | 888RC-TRX-HOSS4X4VXL-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas Hoss 4X4 VXL Hub Bearing Kit | Traxxas Hoss 4X4 VXL | 888RC-TRX-HOSS4X4VXL-HUB-BRG | hub_bearing_kit | View kit |
| Traxxas Jato 4X4 VXL Complete Bearing Kit | Traxxas Jato 4X4 VXL | 888RC-TRX-JATO4X4VXL-FULL-BRG | complete_bearing_kit | View kit |
| Traxxas Jato 4X4 VXL Hub Bearing Kit | Traxxas Jato 4X4 VXL | 888RC-TRX-JATO4X4VXL-HUB-BRG | hub_bearing_kit | View kit |
Related Vehicle Bearing Guides
Use these vehicle pages to compare the full bearing list, quantities and applications for each supported model.
- Traxxas Slash 4X4 bearing size list
- Traxxas Slash 4X4 BL-2S bearing size list
- Traxxas Rustler 4X4 bearing size list
- Traxxas Rustler 4X4 BL-2S bearing size list
- Traxxas X-Maxx bearing size list
- Traxxas X-Maxx 6S Original bearing size list
- Traxxas Maxx bearing size list
- Traxxas Stampede 4X4 bearing size list
- Traxxas Hoss 4X4 bearing size list
- Traxxas Stampede 4X4 BL-2S bearing size list
- Traxxas Ford Fiesta ST Rally BL-2S bearing size list
- Traxxas Slash 4X4 Ultimate bearing size list
- Traxxas Rustler 4X4 Ultimate bearing size list
- Traxxas BIGFOOT 4X4 BL-2S bearing size list
- Traxxas Ford Raptor R 4X4 bearing size list
- Traxxas Hoss 4X4 VXL bearing size list
- Traxxas Jato 4X4 VXL bearing size list
FAQ
What size is the 5120A bearing?
The current catalogue lists 5120A as 12x18x4.
Which RC models use 5120A?
The listed compatible models are Traxxas Slash 4X4, Traxxas Slash 4X4 BL-2S, Traxxas Rustler 4X4, Traxxas Rustler 4X4 BL-2S, Traxxas X-Maxx, Traxxas X-Maxx 6S Original, Traxxas Maxx, Traxxas Stampede 4X4, Traxxas Hoss 4X4 and Traxxas Stampede 4X4 BL-2S.
Where is 5120A used?
Listed applications include hub or differential support, BL-2S/EHD hub carriers, driveline support, hub carriers and driveline and hub or driveline support.
Can I buy 5120A as a single bearing or in a kit?
Where available, this page links to the direct replacement bearing and to complete or assembly-specific kits that include the bearing.