

4kg*. That’s a newborn baby. A 7 week old Labrador puppy. Your Tiga Sub4. By making 72 minute but fundamental changes to the Tiga, alterations that many would simply neglect to notice, we have made an obscenely alluring, pioneering lightweight wheelchair that is as rigid and stable as it is lightweight. Transferring, propelling, lifting, turning… All effortless with your Tiga Sub4.

*excluding wheels, cushion and any non-certified options.
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 froglegs super light castors and corrosion resistant titanium fasteners, the Tiga Sub4 is as smart as it is beautiful.

Only the best materials are used in your Tiga Sub4. Aluminium 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.
Download the full Tiga Sub 4 user manual here







Do you need help with funding your RGK chair?
There are a few different ways in which you can try to get funding for your wheelchair. These choices include NHS Wheelchair Services, Access to Work and charities.
: Tools like MTKClient on GitHub allow you to read, write, and erase specific partitions (like preloader , boot , or userdata ) without needing a full firmware flash.
Once connected, the tool will identify the EMMC size. Do not format the entire flash. Use the "Partition Manager" to delete only the PRELOADER partition. Then, write the new preloader.bin extracted from your stock firmware.
: A versatile open-source tool for unbricking, exploitation, and reading/writing flash. The newest versions support "V6" protocol chipsets that have patched BootROMs, requiring a specific V6 directory to function in preloader mode. ChimeraTool : Recently updated with a New Model Selector
: Ensure you are using a high-quality data cable , not just a charging cable, to prevent connection drops during sensitive write operations.
"Alright," Elias whispered. "Let's see what you can do."