SpeedyBee BLS 55A 4-in-1 ESC (F405 V4 stack ESC)
SpeedyBee · Maglev ID dr-speedybee-bls-55a-4in1
CN Maker in China, factory not confirmed unknown VERIFIED
BLHeli_S 3-6S 55 A 4-in-1 ESC sold as the lower half of the SpeedyBee F405 V4 stack.
Specifications
| Continuous current | 55 A x4 (70 A burst 10 s) |
|---|---|
| Cells (LiPo) | 3-6S |
| Protocol | DShot300/600 (BLHeli_S J-H-40) |
| Weight | 23.5 g |
Who makes it
MakerSpeedyBee (Zhuhai KuaiFeng Technology Co., Ltd.)
Based inChina
RoleBrand owner
Need a different shaft, connector, firmware or enclosure, or a price at 1,000 units? Maglev takes the catalog part to the factory and comes back with a custom version and one fixed price.
Landed cost in the US
CN
37.5%
TW
10%
VN
12.5%
IN
10%
JP
12.5%
KR
12.5%
DE
10%
MX
10%
US
0%
Total US duty on this part by where it is made (2026-10-29). Mexico shown before USMCA preference; qualifying goods enter duty free. Your factory choice, not the shipping port, sets the origin.
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Compliance
| HTS classification | 8504.40.40.00 typical, not a ruling |
|---|---|
| NDAA | unknown |
| Blue UAS | not-listed |
| FCC | n/a |
| Notes | Price recorded only for the full stack ($65.99, dr-speedybee-f405-v4-stack). Page also claims 220 A total continuous / 280 A peak, inconsistent with per-channel figures. |
Equivalents from other makers
Works with
Sources
Record confidence: VERIFIED. VERIFIED means the maker's own documents; REPORTED means a credible third party; UNVERIFIED means a single weak source. Anything we could not confirm says unknown.