Object label
LEGO · LEGO · RCX · 2001
LEGO Ultimate Builders Set (3800-1) is a 2001 set from the RCX theme with 322 pieces.
Ultimate Builders Set (3800-1) is a LEGO RCX release from 2001 with 322 pcs. GrailHub tracks it as part of the LEGO collecting lane, where set number, theme, release year, piece count, and display appeal all help collectors understand how the set fits on a shelf.
LEGO collectors often browse by theme first, so this page links back into RCX, LEGO, and related LEGO objects. Use those links to compare nearby releases, find other display sets, or move from a single set into the wider theme.
Related LEGO entries currently connected to this object include Mini RCX Brick, 9-Volt Touch Sensor and Leads, and RIS 2.0 Basics Kit. These links make it easier to keep exploring without jumping back to a generic search page.
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LEGO catalogue data provided by Rebrickable.
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