ProTek R/C 5x10x4mm Rubber Sealed "Speed" 1/8 Clutch Bearings (10)
[PTK-MR105-2RS]

ProTek R/C 5x10x4mm Rubber Sealed "Speed" 1/8 Clutch Bearings (10)
WeatherB - Rating: 1 of 5 Stars! Verified Owner Sunday, September 20, 2009
Bought a set of these for use on my Jammin's clutch and was very disappointed. Installed them and ran one race (say 7 tanks of fuel) and both bearings failed. I have installed 5 of these bearings so far and they've either become gritty or fell apart. I know the issue isn't my car since the stock Ofna bearings lasted over a gallon before they started to become gritty and were replaced by these. I know they are cheap, but come on, 7 tanks? Save your $10 and get something more reliable.