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LEGO Technic 42099 4X4 X-treme Off-Roader stage 2 upgrade - even more power with only 4 extra gears! - RacingBrick
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LEGO 42099 vs LEGO 42070 | Better Crawler | Technic 42099 Comparison video | Offroader 42099 Test - YouTube
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LEGO Technic 42099: 4x4 X-Treme Off-Roader: Control+, New Pieces, Speed Build & Review [4K] - YouTube
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