HobbyPark Aluminum Heat Sink with 5V Cooling Fan fit 540 550 3650 Size Brushless Engine Motor Heatsink for 1/10 RC Car Truck Buggy Crawler (Black)

Pros:- fast arrival- fan is quiet do not even hear it- Most fans have jst connector, his was one of only fans that had Guyana connector that you can hook to spare channel on the receiver- using heat gun to measure I verified my motor temps went from 149 down to 112. This was on a 90 degree day outside and running 2s LiPoCons:- had to saw one fin off in order for this to fit my rustler 4x4 vxl (see photos)- Would prefer fan be on top of motor but the results seem to be well enough as is- tight squeeze to get this to work and had to file down fin I cut off so would not damage motor wiresNotes:- used thermal compound on heat sink for better heat dissipation- overall very satisfied with results 4/5 since I had to work at modifying it to make it fit

Fan slows/stops when hitting bumps, gets warm with extended use. Not good for use on an RC car that's bouncing around. Heat sink is thick and inefficient. No threads so if you try to tighten the screws they strip immediately and fall out.

if you have a basher, buyer beware. bought for heatsink and was going to replace with better quality fan. once i opened package i wouldn’t risk nice fan with this heatsink. there is no dedicated threaded screw holes for the screws to attach to the heatsink. the screws literally thread their own threads by screwing in between the heatsink fins. lame.

Perfect fit & operation! Color even matches!

Exactly as ordered. Nice quality and fan works flawless.

Keeping my Temps down and the hood almost cold. Running an axial 27t on 3s lipo. Hopefully this heatsink will lengthen the life of the motor!

Well made and works well. Doesn't move the air as much as I would've thought. It is on the bigger size but will fit.

Im running my new losi tt pro on 3s soo I figured this couldnt hurt to keep the temps down a bit. It fits great and seems to work pretty good.