HOOYIJ 2 Pack High Torque 40KG Digital Servo, DS3240MG Full Metal Stainless Steel Gear Waterproof Steering RC Servo, for 1/8 1/10 Scale RC Car Crawler Buggy Airplane Control Angle 180°

Powerful servos they work amazing on my RC crawler they look good made of good quality moves and turns the wheels powerfully super easy to install feel heavy and very durable. They are a little bit loud but all in all they are perfect for what I needed them for they turned really fast as well.

I installed these 4.0 servo's on my Traxxas Erevo 2.0, so far I have 5 hours on them & they work amazing. Much more torque then my stock servo's (about 4x more) & faster. I admit at 1st I was skeptical because they were only $34 for 2 servo's & the stock Traxxas servo it came with was $59/each so that's less than 1/3 the cost. These servo's are heavier & have a much better build quality than stock Traxxas plus they come with metal gears & several attachments to fit other units. They are more precise & faster plus they return to 0 every time, never get warm so all & all I am more than satisfied so I will be buying this brand for all my RC's from here on out, I wasn't sure what size to buy because most of them were the same physical size so I went for more power but knowing how good they are now I could have got the 15kg and been perfectly fine so I highly recommend these.

These are great servos, very high torque, it has great performance super nice definitely recommend.. thanks to the seller for great care in packaging and fast delivery,👍

Not as fast as some higher quality servos but man are they SUPER strong. The servo arm didn’t clear the chassis and it just was bending the plastic chassis. Excellent performance for the price.

Worked perfectly as has been my experience with this servo. I have many of them now .

Direct fit into my traxxas summit 1/10. Night and day difference between the stock servos and these. They really push the large wheels around no problem, where the traxxas 2075 servos would struggle. These even SOUND powerful. The plastic geared traxxas units would whine and protest while these make a great metal gear noise! Definitely worth the price. Ill be buying more.

these worked good.

They work well. Used these on a mini maxx and 2wd slash and I haven’t looked back. Strong, fast and durable for cheap. Same size as the servos they replaced.