Description
This ARRMA assembled oil-filled differential comes built with a 30-tooth 0.8 MOD ring gear and pre-filled with 3000cSt silicone diff fluid — a complete drop-in diff replacement for the GROM platform. Diff building is fiddly work at any scale; at GROM scale it's genuinely tricky, and this unit skips all of it.
The differential arrives factory-assembled, shimmed, sealed, and filled, so gear mesh and fluid volume are exactly to spec out of the package. The 3000cSt fill delivers the stock balance of on-power drive and off-power rotation the GROM platform is tuned around.
A worn diff shows up as clicking under load or a truck that unloads its inside wheel out of corners — and at this price, swapping the complete assembled unit is faster and more reliable than rebuilding.
Fitment is the ARRMA GROM platform including the Quake GROM — confirm against your model's exploded parts diagram. The package includes one assembled, oil-filled 30T differential.
Shipping & Return
Shipping Costs By Region
Shipping to the Contiguous United States (excludes Alaska and Hawaii)
As an added benefit, customers in the continental United States can also take advantage of our economical Basic Economy shipping option which offers FREE Shipping on orders over $75 is automatically offered at checkout. If your order does not reach the $75 threshold for free shipping, we offer Flat Rate $3.99 Shipping.
NOTE: Free shipping is only available when shipping to an address in the Contiguous United States, this excludes Alaska, Hawaii and Puerto Rico.
Shipping to Alaska, Hawaii, Puerto Rico, Guam, and All International Addresses
Basic Economy Free Shipping is not available to residents of Alaska, Hawaii, Puerto Rico, Guam, and international. Customers in these locations will be charged the actual computed shipping rate at the time of checkout.
Customs Fee for International orders:
- You are also responsible for all customs, duties, taxes and fees that may be charged by your customs.
- We cannot list any amount other than the actual amount paid by you on invoices or customs forms.
Ordering Processing Time
- All orders are shipped within 24hrs. M-Sat.
RETURNS:
- We accept returns within 30 days of purchase.
- Returns must be in it's original condition.
- Buyer is responsible for return fees.
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