Finnish company Sisu Auto reported in April 2018 that it developed a GTP 4x4 modular armored vehicle as the successor to the aging armored vehicle Pasi, developed by the same company in the 1980s.

The Sisu GTP has a differential lock in each axle and an independent suspension system that improves the vehicle's efficiency in off-road terrain and dirt roads. It can carry up to 4,500 kg of payload in off-road conditions, taking into account the armor.

The separate hull of the crew and the basic structure allow creating different variants and increasing maintainability. The modular structure of Sisu GTP allows solving specific tasks for different conditions; protection can be increased by replacing components or installing an optional add-on armor kit.