This is the custom B model of the LEGO Technic 42099 X-Treme Off-Roader designed by Diederik van Leeuwen. It only uses parts from the original model, has two Powered Up XL motors, one Powered Up L motor and the Technic hub. The rock crawler has a unique design with an impressive axle articulation and the body's tilting angle averages the angles made by the front and rear axles.

Details and instructions available here - https://rebrickable.com/mocs/MOC-3063...

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