Parts & installation
Manufacturer documented- Vehicle
- Arrma Kraton 6S BLX V5ARA8608V5
- Position
- front / rearOne front or rear axle. Match the effective front/rear reduction.
- Change
- Fit the assembled open axle differential with its matching GP4 input gear
Parts needed
One differential and one matching input per axle| Part | Qty |
|---|---|
| ARA311066ARRMA Open F R Differential Set GP4 5mm 10K | 1 |
Upgrade notes
- Requires ARA310979: ARRMA Main Input Gear 10T Spiral Cut GP4 5mm.
- Required matching 10T GP4 input for the 43T spiral ring gear in ARA311066. One per converted axle.
ARRMA documents this option for this edition. Check the installed parts before ordering.
Installation notes
- Fit one assembled ARA311066 with the required ARA310979 input gear at the selected axle. The 43T GP4 ring and 10T GP4 input form a 4.3:1 pair; do not mix that ring with a different input design.
- The assembly has a 29mm composite case, steel internals, bearings and 10,000 cSt oil. It is an open differential, not a limited-slip or metal-housing conversion.
- Confirm that the opposite axle has the same effective reduction. Repeat both component quantities if converting both axles, and preserve the matched front/rear ratios.
- Check bearings, shimming and ring/input mesh during the rebuild. Oil viscosity is a setup choice, not a guarantee of a particular driving feel.
- A standard front/rear differential is distinct from the center unit. This package does not add a rear mechanical brake or raise the pack-voltage rating.
Sources
ARRMA Open F R Differential Set GP4 5mm 10K (opens in a new tab)
- Preassembled 43T GP4 open axle differential with 29mm case, bearings and 10,000 cSt oil. Requires ARA310979.
ARRMA Main Input Gear 10T Spiral Cut GP4 5mm (opens in a new tab)
- 10T GP4 spiral input gear paired with ARA310980 43T GP4 ring gear.