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RPX 4 (RPX4) BLACK Brushless Electronic Speed Control ESC [Yokomo] BL-RPX4

Marsoni M251S
Sale price$169.50
Pay 4 payments of $42.38 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
RPX 4 (RPX4) BLACK Brushless Electronic Speed Control ESC [Yokomo] BL-RPX4Take your racing setup to new territory with the BL RPX4, Yokomos next generation speed controller tailored for uncompromising performance. Developed through relentless on track testing, this unit builds on the legacy of its RPX predecessors while pushing boundaries in power delivery and motor controlright out of the box. Instruction Manual: https: teamyokomo. com downloadfiles ! 02! MANUAL ! 02! ELECTRONICS BL RPX4_Manual. pdf Key Features Developed
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.3 ★★★★★
Based on 2169 reviews
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Placeholder
Belleville, US
★★★★★ 4
Good but if the elastic band were wider it would be great
Color: Black
This is a great under helmet or perspiration barrier for the face during heavy spinning workouts. Sadly to avoid an indentation to your forehead, you must wear it inside out because the sewing band is narrow and tight.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026
C
Verified Purchase
Cassandra
West Palm Beach, US
★★★★★ 5
"Head" of the house gift...
Color: Black
Great fabric, nice fit..
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
A
Verified Purchase
Amazon Customer
Omaha, US
★★★★★ 1
Too damn small
Color: Black
Way too small for an adult. It doesn't even fit my 11 year old. Unfortunately I didn't open it immediately or I would have returned it. Now I'm stuck with something nobody in my house can use.
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Reviewed in the United States on April 16, 2026
O
Verified Purchase
OBG
Lowell, US
★★★★★ 3
One size definitely doesn’t fit. Otherwise Ok.
Color: Black
OSFM - one size fits most. It should be OSFS - one size fits small/some. Measured my head size and according to their chart I’m l/XL. This cap is tight fitting and gives you a headache after an hour. Otherwise it’s fine. Keeps your head cool, is absorbent and works well under a helmet.
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Reviewed in the United States on November 21, 2025
G
Verified Purchase
GET SOME!
Natrona Heights, US
★★★★★ 5
Feels refreshing on the head…
Color: Black
I purchased a few of these on UA application. However, when I decided to put some more the UA app was out of stock. I love the skull caps!! I use them for the gym and for work. They’re very comfortable and outstanding if you’re in a hot environment, sweat a lot or just want to be cooler. They haven’t slipped at all and it’s great value for what I spent! So far I have seven in total. I may purchase three more shortly before summer hits that way I can use one at the gym and one at work per day and don’t have to worry about doing my laundry just to have clean skull caps.
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Reviewed in the United States on February 2, 2026

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