Build a better railway

Every layout starts with a track.

Explore train track by shape, radius, and system. Find the individual parts and expansion packs for your next LEGO railway.

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Explore track shapes

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Track geometry atlasTop-down view
TrixBrix Double Slip Switch R40

Assembly · 4 components. Four symmetrical components; individual component identifiers are not documented in the reviewed source.

Source geometry connected at the purple joints. Added exit tracks are 16 studs long.

View assembly in part catalog →Trixbrix specification ↗
R24 · 0 catalog matchesR24R32 · 0 catalog matchesR32R36 · 0 catalog matchesR36R40 · 4 catalog matchesR40R48 · 0 catalog matchesR48R50 · 0 catalog matchesR50R56 · 2 catalog matchesR56R64 · 0 catalog matches · special R64P segmentsR64R72 · 0 catalog matchesR72R84 · 0 catalog matchesR84R88 · 0 catalog matchesR88R96 · 0 catalog matchesR96R104 · 5 catalog matchesR104R120 · 2 catalog matchesR120R136 · 0 catalog matchesR136R148 · 0 catalog matchesR148R152 · 0 catalog matchesR152R168 · 0 catalog matchesR168R184 · 0 catalog matchesR184S1.6S3.2S4S8S16S32263.655, 168.489 studs · 180.000°268.507, 156.773 studs · 225.000°296.792, 168.489 studs · 0.000°291.939, 180.205 studs · 45.000°One radius · all vendors. Grid: 8 × 8 studs.

Each radius appears once, across all vendors. Choose a Trixbrix part or assembly to see its BlueBrick geometry on the map, with source connection positions and 16-stud exit tracks. Trixbrix diagrams represent plastic track; a physical connection does not provide 9V electrical continuity.

Trixbrix BlueBrick library · Dr. Matthias Runte / MattzoBricks ↗

Switches & specialist track

Shape symbols below are schematic. Compare each part’s documented radius, exit angle and connector before joining routes. Crossings allow intersecting routes; slip switches can also connect them.

Your selection

R40

A 40-stud radius, measured to the track centerline. Vendors share this radius category. Compare curves, switches and packs below; check each part’s angle and rail system.

LEGOTrixbrix
Centerline diameter
64.0 cm
In studs
80

Allow extra room for the track edges and train overhang. A matching radius alone does not guarantee a matching angle or connection.

Explore 4 matches

Dimmed snapshots have no catalog matches for the current filters. Select a radius to compare vendors, or choose a source part or assembly above. Zoom and swipe to inspect its joints on the stud grid.

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About the 3D snapshots

Rendered from the existing track models with BrickUpp’s catalog material and lighting profile and an orthographic top camera. Model references: LDraw, L-Gauge, and Fx Bricks. Trixbrix specialist diagrams come from the BlueBrick 2D library and retain its source scale; they are not 3D renders. Catalog counts describe documented matches, not live stock.

The track catalog

R40

4 catalog matches

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