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The P1289 is a descendant of the innovative P1227 transmission and features a single speed 3-shaft configuration with an integrated park-brake and a high performance motorsport limited slip differential.

Aston Martin selected this transmission for their first all-electric car – the Rapide E – which required a lightweight, extremely efficient and package optimised solution. As a result of working closely with the vehicle design team and Integral Powertrain, the motor supplier, this highly integrated transmission utilises two rear mounted electric motors producing a combined target output of just over 610PS (450kW) and a colossal 950Nm of torque, providing the balance of power and refinement required for such a vehicle.


  • Single speed
  • Ramp / plate LSD
  • Ratio of 6.099:1
  • Designed to integrate with Integral Powertrain SPM motors
  • Maximum input speed of 12,000rpm
  • Ground helical gears for optimal NVH
  • High strength aluminium alloy L169 casings
  • 50kg mass (excluding motors)


  • Lightweight, power dense, silent and efficient transmission
  • Optimised for road-going refinement and durability
  • High level of integration meets tight packaging requirements
  • High degree of freedom of orientation
  • Range of ratios available
  • Cost optimized utilizing proven OEM volume components
  • Standard automotive output flanges

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