Further contributing to the weight advantage was the adoption of lightweight sequential manual transmission originally developed for Lotus 12 by Richard Ansdale and Harry Mundy incorporating the unique sequential-shifting motorcycle gearbox, and a ZF limited-slip differential in a common Magnesium alloy housing to form a transaxle, which also provided the mounting points for inboard rear brakes.
The weight advantage was improved with the use of a lightweight sequential manual transmission originally developed by Richard Ansdale and Harry Mundy, featuring a unique sequential-shifting motorcycle gearbox and a ZF limited-slip differential integrated into a magnesium alloy housing to create a transaxle that also supports inboard rear brakes.