Sadev ST90-17



The ST90-17 is the latest of SADEV’s innovations in the 2WD transverse range, and adapted for turbocharged engines such as 2,0L turbo. SADEV’s main commitment was to concentrate on complex improvements in one gearbox. It offers, among others, a bigger centre distance and the development of the differential to improve its efficiency in getting power to the wheels. The ST90-17 is adapted for Touring cars and GT cars.


  • 6 speed sequential gearbox + 1 reverse gear
  • Manual sequential gear selection (semi-auto optional)
  • Wide range of final drives available
  • Wide range of ratios available
  • Straight cut gears
  • Gear engagement made by dogs
  • Inspection bungs
  • Interchangeable gear ratios
  • High strength carburizing steel
  • Gear teeth grinded with optimized profile
  • Shot penning on internal parts
  • Specific input shaft
  • Limited slip differential (low friction optional)
  • Ramp and plate system – 3 discs type (4 discs optional)
  • Preload made by compression springs
  • Wide range of ramp plates available
  • Reverse locking solenoid (optional)
  • Contactless gear position sensor
  • Contactless flat shift sensor
  • Temperature sensor (en option)
  • Splash lubrication system
  • Integrated oil pump
  • Oil suction screen
  • Painted AS7G aluminum casings
  • Casing joint faces sealed with O’rings
  • Quick release system to remove the differential cartridge
  • Weight (input shaft included) : 36 kg – 79 lbs