Xray T4 ECS BB 52mm & 53mm driveshafts
Coming from Xray and made for their T4 line of touring cars are the new ball-raced ECS BB driveshafts. The construction of the driveshafts offers a significant performance gain over the standard blade-type driveshafts as the friction between the driveshaft and the outdrive is greatly reduced thanks to using ball bearings, which helps to give a much smoother handling feel, especially on fast direction changes, such as chicanes. The reduced friction also helps to increase cornering speeds. The driveshafts are available as 52mm variant for smaller, more technical tracks where more initial steering is needed while the longer 53mm driveshafts are best suited for more open and flowing track layouts. They will provide slightly less initial steering, but better steering in the middle of the corner, as well as on power. The BB driveshafts only work with the front solid axle in combination with the optional #305138 outdrives.
Source: Xray [teamxray.com]