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LEGO part 2905: Technic Beam Triangle Thin [Type I]

Technic Beams13 colours161 sets

LEGO part LEGO part 2905: Technic Beam Triangle Thin [Type I]

Specifications

Reference2905
CategoryTechnic Beams
MaterialABS plastic
Colours13
Sets161
Listed pieces674
First appearance1995
Latest appearance2013
Element (Black)4142543 · 290526
Most common colourBlack
Main themesTechnic, Racers, Bionicle
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 2905, Technic Beam Triangle Thin [Type I], belongs to the Technic Beams category. It exists in 13 colours and appears in 161 sets of our database, from 1995 to 2013, for a total of 674 listed pieces. Its most common colour is Black.

Number 2905 identifies the shape and is moulded under the part. Each colour also has its own element ID, the one Pick a Brick uses: in black, it is 4142543.

Part 2905 through the years

The oldest set in our database that contains part 2905 is 8485 Control Centre / Control II, released in 1995 in the Technic theme. No set in our database uses it after 2013, the year of 70011 Eagles' Castle. To get it today, look for older sets or buy it second-hand.

Its peak year is 2009, with 15 sets containing it. The set with the most copies is 8275 Motorized Bulldozer: 30 copies, against an average of 4.2 per set.

The part is closely tied to the Technic theme: 61% of the sets that contain it belong to it. With 161 sets, it ranks no. 827 of 2,731 parts in our database and no. 26 of 37 in the Technic Beams category.

Sets containing part 2905, by period

PeriodSets
1995-199943
2000-2009104
2010-201314

Colours of part 2905

3 colours appear in only one set: green (8000 Pit Droid), tan (8001 Battle Droid) and dark red (8756 Sidorak).

Colour (element ID)SetsPiecesExample sets
Black4142543 · 29052679299807084808051
Yellow4296140 · 42514612072848082758069
Red4142540 · 2905211860838682948274
Light Gray4142539 · 2905021840848084798457
Light Bluish Gray42116531782829780517633
Dark Bluish Gray421068916591019582978052
Blue4254627 · 4142541718841784168011
Dark Gray4142544 · 4124042628800274718446
Pearl Light Gray422759836864586218622
White4142538 · 2905012484809748
Green4142546 · 4141200128000
Tan4142545 · 4140439128001
Dark Red4250512128756

Where to buy part 2905

Setopedia shows no prices: they vary by colour, condition and seller. Amazon links are affiliate links.

Sets that include part 2905

Sets ranked by popularity that include at least one part 2905, in any colour.

Frequently asked questions

How many LEGO sets include part 2905?

Part 2905 (Technic Beam Triangle Thin [Type I]) appears in 161 sets listed on Setopedia, from 1995 to 2013, in any colour.

Which LEGO set contains the most copies of part 2905?

Set 8275 Motorized Bulldozer, released in 2007, contains 30 copies, the highest count in our database. On average, a set containing part 2905 has 4.2.

Which colours does LEGO part 2905 come in?

13 colours are listed for part 2905. The most common is Black, found in 79 sets.

What is the rarest colour of part 2905?

According to our inventories, it is green, found in only 1 set (8000 Pit Droid).

What is the element ID of part 2905 in black?

In black, part 2905 has element ID 4142543 or 290526. Number 2905 is the mould number, the same for every colour.

Is LEGO part 2905 still used in recent sets?

Not in our database: its last set dates from 2013 (70011 Eagles' Castle). Look for it in second-hand sets or on BrickLink.

Where can I buy LEGO part 2905 individually?

Single parts 2905 can be ordered on Pick a Brick (lego.com) in colours currently produced, or on BrickLink for older colours. The part is also included in the sets listed on this page.