4 Pcs Aluminum Engine Motor Heatsink Fins, RC 540 550 Car Accessories, Blue | Electric motor heatsinks, for RC 540 and 550 size, brushed brushless motors, Blue cooling fins, RC Car Accessories

Perfect fit for my son's Mercedes 450 ride on. It helps cool the motor (550 size). I attached two of them using a tie wrap.

Easy install and looks awesome. Needed for those hot summer days. Price is great for a four pack. I lost a stock heatsink just from roll over, so now I have extras that fit better than the stock one that I lost.

Nice quality, but i couldnt get it to fit on stampede vxl 2wd motor. I tear my trucks down alot so i know what it should be like. Theres just not enough width to put it in. So i cut 1/8th of a inch off and made it fit. Nice fit after that but if your not handy then find another one thats direct fit

I have installed these as motor heat sinks for my daughters Power Wheels truck. I recently installed a 20v battery adapter in her Power Wheels and she loves driving around for 30+ minutes. With battery swaps able to be done quickly and easily, I was worried about the motors over heating. These heat sinks made a difference, but I'm considering adding a fan as well.

So far so good. Add a drop of ca glue to hold in place. But fit and cooling is great.

Ordered for a few RC vehicles which get warmer than I'd feel comfortable with! These are great, Clip on and go! For best results I suggest you pick up some thermal paste, add a small amount to the inside curve of this heatsink before you put it on the motor. (and make sure there are no stickers or labels on the motor can as well) but it works great as a slap on solution as well. Gives my motors more surface area to dissipate heat. and fit well even on my 4-tec 2.0 with limited space around the motor! I purchased a second set for my kid's 18v power wheels. You actually can fit TWO on a titan 550 motor, so it makes a complete circle around the motor and they fit snugly without leaving gaps. Both surprised and glad to see that! Keep in mind these heatsinks will not do THAT much to help your temps if there is no airflow around your motor, they add more surface area to dissipate the heat, but without airflow to blow that heat away it's just more hot metal.

i tried to cut one down to use as a heat sink on my 3d printer extruder on a creality k1 it worked amazing then the ptfe tube snagged it and it popped off but worked like it should even though im using it not the way it was designed

Fits ok, just press on. Want to drill a few holes, so it can fit my ta02 tamiya chassis a little better but the tamiya tt02 has no problem fitting it.