More from Buddy RC →KST X20-4208 Brushless 6BB HLS Standard Servo 46Kgf.cm 0.07sec
$159.99
In stock at buddyrc.com
The KST X20-4208 is a brushless standard-size servo rated up to 46 kgf.cm and 0.07 sec/60 degrees at 8.4V. It pairs a 4-pole brushless motor with a hardened steel HLS gear set, six ball bearings and a CNC aluminum case rated IP65. It targets 1:7 and 1:8 scale race cars plus aerobatic planes and jets.
See all 4,621 Buddy RC products·Visit buddyrc.com
Price and stock from buddyrc.com, refreshed daily. We may earn a commission if you buy.
Highlights
- 4-pole brushless DC motor
- Hardened steel HLS gear set with 6 ball bearings
- CNC aluminum alloy case, IP65 splash-proof
- Programmable via programming box or USB link, including soft start
- Voltage range 6.0V to 8.4V
Best for
Racers running 1:7 or 1:8 scale on-road or off-road cars who need very high torque and speed.
Things to consider
- At $159.99 it is a premium servo; lighter vehicles may not need this much torque
- Stall current reaches 12.3A at 8.4V, so your BEC or power system has to keep up
- Programming tools are compatible but not stated as included
Key specs
| Price | $159.99 |
|---|---|
| Torque | 38 / 42 / 46 kgf.cm at 6.0 / 7.4 / 8.4V |
| Speed | 0.10 / 0.08 / 0.07 sec/60 at 6.0 / 7.4 / 8.4V |
| Voltage range | DC 6.0V to 8.4V |
| Frequency | 1520us / 333Hz |
| Dimensions | 40 x 20 x 40 mm |
| Weight | 80 g (plus or minus 10%) |
| In the box | Servo and accessory pack |
Our take
A serious, fully specified servo for large-scale racing where torque and speed matter most.
KST X20-4208 Brushless 6BB HLS Standard Servo 46Kgf.cm… at a glance
| Brand | Buddy RC |
|---|---|
| Price | $159.99 |
| Type | Servo |
| Availability | In stock at buddyrc.com |
| Returns | Items can be returned within 30 days of receipt with an RMA code requested by email.… |
Price check
At $159.99, the KST X20-4208 Brushless 6BB HLS Standard Servo 46Kgf.cm… is toward the top of Buddy RC's price range, whose 4,618 listed products run $0.25 to $9,999.
Frequently asked questions
What vehicles is the X20-4208 for?
KST designed it for 1:7 and 1:8 scale on-road and off-road race cars, and says it also suits aerobatic airplanes, jets and scale models.
Is it waterproof?
It is rated IP65, which the listing describes as splash-proof.
Can I plug it into a powered receiver?
KST warns never to plug the servo into a live system, so power down first.
How much is the KST X20-4208 Brushless 6BB HLS Standard Servo 46Kgf.cm…?
Buddy RC lists it at $159.99 on buddyrc.com. We refresh prices throughout the day, but always confirm the final price at checkout.
What is Buddy RC's return policy?
Items can be returned within 30 days of receipt with an RMA code requested by email. Returns in new condition with original packaging have no restock fee; others are charged 10 to 20%, and shipping fees are not refunded.
How long does Buddy RC take to ship?
Orders placed before 2 p.m. EST usually ship the same business day from Columbus, Ohio, by USPS or UPS, with most packages arriving in 2 to 5 business days. Orders over $100 may ship free within the US, excluding most airplanes, and LiPo batteries ship only by UPS Ground.
Does the KST X20-4208 Brushless 6BB HLS Standard Servo 46Kgf.cm… come with a warranty?
Buddy RC's published warranty terms: Products older than 30 days may be exchanged under warranty but aren't eligible for a refund. Specific warranty terms aren't published in the policy text.
Where can I buy the KST X20-4208 Brushless 6BB HLS Standard Servo 46Kgf.cm…?
The KST X20-4208 Brushless 6BB HLS Standard Servo 46Kgf.cm… is sold directly by Buddy RC on buddyrc.com. The Shop now button on this page goes straight to the product there.
Is the KST X20-4208 Brushless 6BB HLS Standard Servo 46Kgf.cm… in stock?
Yes. Buddy RC lists it as in stock on buddyrc.com as of our latest check. Stock and prices refresh throughout the day.
Is Buddy RC a legit store?
Buddy RC is a strong pick for RC pilots who need specific parts, power systems or helicopter spares from a US warehouse with same-day dispatch. Skip it if you want generous returns, since shipping is never refunded and returns that aren't in new condition carry a 10 to 20% restock fee. Confirm the exact part number and motor or frame compatibility before ordering, because most of the catalog is model-specific. Our full Buddy RC review covers shipping, returns and what to check before ordering.
Is the KST X20-4208 Brushless 6BB HLS Standard Servo 46Kgf.cm… expensive?
At $159.99 it is toward the top of Buddy RC's range ($0.25 to $9,999 across 4,618 products).
More from Buddy RC
Shop all Buddy RC →
