RSX 12 plates differential. it is the only one with 12 friction plates and therefore probably one of the best performing once on the market for a Peugeot and Citroen Be gearbox. In addition, this is the lightest plate differential on the market, thanks to the use of forged Chromoly steel in its components, the weight can be reduced to 4.6 kg and as proof of the quality RSX offers a 1 year motorsport warranty on material of manufacturing defect.