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04.28.2006, 10:43 AM
There is no difference, only that BK have better bearings, so get BK. For 12-16 cells a 9920 is perfect. I run mine on 16 cells and its fine.
The problem with nitro's these days are that they arent brushless... LOL
Losi 8ight e
MMM / Neu 1512 2.5d/f
Thunderpower 5s 5000
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