New from Losi is the release of this centre differential 50T and 48T Lightweight spur gears for the 8ight buggy and the 8ight T truggy. Lightened without sacrificing strength through the use of additional holes, the gears is optimally sized to fit the 8ight racing platform with no modifications.
Source: http://www.redrc.net/2008/08/losi-8b8t-centre-diff-lightweight-spurs/