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RGK Tiga Sub 4 aluminum wheelchair



The Lightest Aluminum Wheelchair

Looking to order an RGK wheelchair? Our expert staff will work with you to perfectly measure and build your chair exactly how you want it. View the full order form below and get started with a wheelchair expert today.


Only the best materials are used in your Tiga Sub4. Aluminum is famous for its strength, durability and is synonymous with lightness. The utmost best performance of your chair is ensured by only using elements produced by market leaders, alongside a staggering 19 quality checks throughout the build, from measure to handover. By embracing marginal gains technology, the Tiga Sub4 has been created as an unparalleled ultra-lightweight wheelchair. A completely unique Sub4 upholstery, shortened axle and pin setup, specially designed frog legs super light castors, and corrosion-resistant titanium fasteners, the Tiga Sub4 is as smart as it is beautiful.


  • Optimized biomechanics for maximum power and efficiency
  • Perfect toe in toe out for a minimum drag
  • Rigid and lightweight frame for pushing efficiency
  • Super light Froglegs castors, 4” x 1.25” with aluminum center
  • Aerospace-grade aluminum as standard
  • Sports bearing housing with a plastic top bearing
  • New stem bolt complete with integrated washer
  • Hollow forged castor arm with zero tolerance bearing alignment
  • A7075 castor axle with Titanium strengthening bolts and plastic spacers
  • Optimized axle and pin set up with Titanium sleeves


  • Frame

    Aluminum 7020 frame

Frame & Geometry

  • Frame Size

    Made to measure

  • Total Weight

    Less than 4kg guaranteed* (excluding wheels and cushion)

  • Weight Limit


Standard Features

  • Rigid and lightweight
  • Optimized hollow forged castor arm
  • Low profile cross braces
  • Optimized single tube design



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