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Designed primarily for two-wheel-drive rally-raid, the SL9O-23 is designed for driving across dunes, steppes and the trickiest terrain. Thanks to its ingenious design, it absorbs heavy loads from V8-type engines and sudden increases in torque administered by the most difficult circuits.


  • 6 speed sequential gearbox + 1 reverse gear
  • Super-polished bevel gear ratio 9×34 or 8×35
  • 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
  • Hydraulic clutch bearing
  • Central limited slip differential
  • Ramp and plate system – 3 discs type
  • Preload made by belleville spring washer
  • Wide range of ramp plates available
  • Reverse lockout cable or option of solenoïd
  • Splash lubrication system
  • Oil pump integrated
  • Directed and pressurised lubrication on the gears and bevel gear
  • Oil suction screen
  • Magnetic drain plugs
  • Painted AS7G aluminum casings
  • Assembled with spacers and studs
  • Weight (input shaft included) : 85 kg – 187 lbs