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Drawing on decades of experience in the single-seater world, SADEV has perfected the SL75LW, an ingenious blend of creativity and technology.
Its many possible technical configurations make this an “à la carte” product that can adapt to your application. It is available in a simplified version, with five speeds and free differential, and a high-performance version with self-locking limited slip differential, six speeds and integrated paddle shift.


  • 5 or 6 speed sequential gearbox + 1 reverse gear
  • Manual sequential gear selection (semi-auto optional)
  • External selector rocker (optional)
  • Bevel gear ratio : 10×31 or 8×31
  • The bevel gear is cut and grinded in house on our CNC units
  • Wide range of ratios available
  • Straight cut gears
  • Dog ring gear engagement
  • Interchangeable gear ratios
  • High strength carburizing steel
  • Gear teeth grinded with optimized profile
  • Shot penning on internal parts
  • Specific input shaft
  • Free differential (limited slip differential optional)
  • Ramp and plate system – 3 discs type
  • Preload made by belleville spring washer
  • Wide range of ramp plates available
  • Reverse lockout cable
  • Contactless gear position sensor
  • Splash lubrication system
  • Magnetic drain plugs
  • Painted AS7G aluminum casings
  • Weight (input shaft included) : 37 Kg – 81 lbs