Comparing the gearing upgrade options of the LEGO Technic 42099 4X4 X-treme Off-Roader
The LEGO Technic 42099 4X4 X-treme Off-Roader is a great set and it offers a relatively easy way to change the internal gearing, allowing us to find the balance between speed and climbing abilities.
Last year I published 2 upgrade options, now I compare them with the original directly to show you what are the differences.
5 minute upgrade - • 5 minute upgrade - turn the LEGO Tech...
Stage 2 upgrade - • LEGO Technic 42099 4X4 X-treme Off-Ro...
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