Description
The Spektrum Firma 4074 2050Kv is a four-pole sensorless brushless motor built for 1/7 and 1/8 scale buggies, truggies, and monster trucks running 3S to 6S LiPo setups. It is the motor included with the Firma 150 Amp ESC/motor combo (SPMXSEMC05), making it a direct replacement for that system as well as a strong upgrade path for large-scale bashers and racers moving up in power.
The low-cog 4-pole, 8-magnet rotor design delivers smooth power delivery and precise throttle control even at low speeds, with the strong bottom-end torque that four-pole motors are known for. Construction is high quality throughout: a CNC-machined aluminum housing for heat dissipation, insulated high-purity copper windings for efficiency, precision ball bearings, and a hardened alloy steel output shaft.
The Safe-D shaft is a standout feature — it provides a C-clip locking point that mechanically prevents pinion gear slip under rapid acceleration and hard braking. Factory-installed 4mm gold-plated bullet connectors make installation plug-and-play, and the motor is perfectly matched to the Firma 150 Smart ESC.
Dealer fitment references include the ARRMA 6S BLX family: Kraton 6S, Big Rock 6S, Felony, Mojave 6S, Fireteam, Notorious, Infraction V2, and Typhon 6S. The package includes one brushless motor.
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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