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R4 Sequential Gearbox | Subaru STI
R4 Sequential Gearbox | Subaru STI
  • The results speak for themselves! World's #1 selling sequential gearbox for Subaru STI for the last 3 years 2012, 2013 and 2014! Give your STI the transmission it deserves!


  • Complete Sequential Mechanism
  • Input Shaft
  • Output Shaft
  • CNC Aluminium front plate case
  • 1st – 6th Gears with dog rings
  • Selector Rods
  • Selector Forks
  • Shifting Roller
  • Gear Indicator Sensor
  • LED Display Indicator
  • Complete Bearings and Needle Roller Bearings set

Gear Ratios Available

R4 Sequential Gearbox | Subaru STI - Graph

KAPS Advantage

  • The gearbox has integrated an ultra lightweight aircraft grade aluminium CNC plate section that holds the new sequential mechanism and shafts.

    Complete also with upgraded high strength gears and shafts, billet selector forks and billet selector rods.

    Using the standard Subaru gearbox housing, the sequential kit is designed for the racer looking to have a quick shift sequential gearbox and keeping budget in mind. Kit is supplied in assembly position for easy installation into the gearbox. No modification required!

    It is also to purchase only the sequential upgrade kit for existing KAPS dogkit customers.

    Fast facts
  • Gearbox type: 6 speed full sequential gearbox
  • Gear shift layout: R-N-1-2-3-4-5-6-R-N-1-2...
  • R4 Kit Weight: 29kgs
  • Total gearbox weight: 76kgs (10.5kilos lighter than a standard 6 speed STI gearbox)
  • Maximum torque: 800NM
  • Tooth profile: Straight cut
  • Shift performance: 40-50milliseconds


KAPS Transmissions R4 KitR4 Display and sensor


Shift ahead of the pack. shift fast


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