Technic (429 parts)

Technic is a system unto itself, with a focus on connecting parts using pins and axles, but you will find plenty of Technic parts with studs as well.

Modern Technic sets include very few Classic (or 'System') parts containing studs, because they have moved towards an engineering-focused building system that abandons the awkward 5:6 ratio of classic bricks in favor of a 3-dimensional grid based on the width of a plate (5 units).

A large selection of Technic parts with studs remain in production for a completely different reason... Classic 'System-based' LEGO sets have adopted Technic as the primary way to add interactive play features and a critical tool in making models stronger.

It is interesting to see how far Technic has evolved away from the classic Technic brick. In recent years, there has been a push to make Technic sets more realistic, which has resulted in a huge number of Technic 'panel' elements which can give the exterior of the model exactly the right shape. This is especially true in the high-end Technic supercars which need to match the appearance of a complex curved vehicle.

Technic (429 parts)
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View:ScaleLabelTable

Brick

Technic bricks have studs, allowing them to integrate with brick-built 'LEGO System' models.

Part Name(Part Number)
Overall
Rank
# Pieces(Rank)
# Sets(Rank)
# Colors(Rank)
Years
Produced
1×1 Technic Brick6541
88
806297
1766102
28197
1993-202634 years
1×2 Technic Brick3700
47
1527458
314541
34116
1976-202651 years
1×4 Technic Brick3701
123
6809114
1606114
21351
1977-202650 years
1×6 Technic Brick3894
246
3816201
999192
12848
1979-202648 years
1×8 Technic Brick3702
256
3304240
825234
15607
1977-202650 years
1×10 Technic Brick2730
386
1723377
484400
13762
1990-202637 years
1×12 Technic Brick3895
346
2226313
569349
14682
1979-202648 years
1×14 Technic Brick32018
481
1520417
416455
91201
1997-202630 years
1×16 Technic Brick3703
289
2959254
627314
16559
1977-202650 years
1×2 Technic Brick, 2-Pin Holes32000
142
6023130
1390131
22320
1996-202631 years
1×3 Technic Brick, 3-Pin Holes5565
1844
1151629
401883
42689
2024-20263 years
N
2×2 Technic Brick w/ Cutouts73109
604
1039508
313562
71553
2021-20266 years
1×1 Brick w/ Axle Hole73230
328
2756263
469408
16560
2021-20266 years
1×2 Brick w/ Axle Hole32064
83
898187
192585
27209
1997-202630 years
2×2 Brick w/ Grooves, Vertical Axle Hole90258
778
640685
251659
61828
2010-202617 years
2×4 Brick w/ Vertical Axle Holes39789
801
463825
154902
13792
2019-20268 years
4×4 Technic Frame, Open Center32324
910
411870
232687
52223
2000-202627 years
4×6 Technic Frame, Open Center32531
822
616698
246671
52218
2001-202626 years
6×8 Technic Frame, Open Center32532
692
673651
231689
101077
2001-202626 years
16×16×1⅓ Technic Plate (Art)65803
1803
1771348
202694
61869
2020-20267 years
5×5 Technic Brick, Corner32555
1104
402878
971178
52224
2001-202626 years
1×2 Brick, Pin 1-Side44865
266
2951255
814236
15608
1988-202639 years
1×2 Brick, 2-Pins, 1-Side30526
601
753602
296590
11967
2000-202627 years
2×2 Brick, Pin 1-Side6232
323
2285305
672293
14681
1985-202642 years
2×2 Brick, 2-Pins, 2-Sides30000
529
1182474
365500
91204
1995-202632 years
2×4 Brick, 2-Pins, 2-Sides6249
709
784592
251658
71560
1995-202531 years
2×4 Dbl. Inv w/ 2-Pins, Sides30390
2648
362761
272336
33370
2000-202122 years
2×4 Brick, Pin Top, Cutouts30592
999
2931043
175834
61847
2001-202626 years
2×4×1⅓ 2-Axle Holes, Cutout67446
1385
2401147
1201044
24048
2015-202612 years
2×6×1⅓ 2-Axle Holes, Cutout3668
1681
1891297
951195
15546
2020-20267 years
1×2 w/ 2-Liftarms85943
716
722626
303580
61823
2009-202618 years
1×6×1⅔ Slope w/ 3-Pin Holes2744
903
375908
1101090
13795
1988-202437 years
2×2 Round w/ 2-Pin Holes17485
515
816574
313563
18473
2015-202612 years
2×2×2 Robot Body w/ 2-Pin Holes30361
885
2801064
140948
15644
2000-202627 years
4×4 Round w/ 4-Pin Holes6222
627
638686
225705
15634
1995-202632 years
6×6 Round Brick w/ 5-Pin Holes18897
4305
153977
45381
42977
2015-202511 years
1×6×4⅓ Angled Brick w/ Cutout, 4-Pin Holes49699
2719
672116
172922
24124
2019-20257 years
1×5×3 Connector Block32333
1439
2051248
871256
33222
2000-202627 years

Plate

Studded LEGO plates with Technic pin or axle connections.

Part Name(Part Number)
Overall
Rank
# Pieces(Rank)
# Sets(Rank)
# Colors(Rank)
Years
Produced
2×4 Plate w/ 3-Holes3709
228
3628219
1043178
15606
1977-202650 years
2×6 Plate w/ 5-Holes32001
446
1378443
516377
11955
1992-202635 years
2×8 Plate w/ 7-Holes3738
361
1691381
619319
14684
1977-202650 years
4×4 Plate w/ Ø2 Rounded Corners, 9-Holes7864
5970
65595
45500
16455
20261 year
N
1×5 Plate w/ Rounded Corners, Axle Hole32124
400
1673384
492392
12851
1986-202641 years
3-Blade Rotor w/ Axle Hole32125
947
2921046
134983
11993
1986-202641 years
6-Blade w/ 6-Clips (Waterwheel)69984
2132
602211
332086
52330
2009-202618 years
1×2 Plate, 1-Pin Hole, Bottom18677
300
3017252
696276
12850
2015-202612 years
1×2 Plate, 1-Pin Hole, Top11458
197
3515226
965198
25253
2013-202614 years
1×3 w/ 2 studs, Hole Bottom3172
843
583717
133990
91218
2023-20264 years
N
2×2 Plate, 1-Pin Hole, Bottom10247
226
3729208
1107164
14679
1987-202640 years
2×2 Plate, 2-Pin Holes, Bottom2817
360
1769364
756252
11953
1989-202638 years
2×4 Plate, 2-Pin Holes, Bottom26599
1108
392893
198761
24032
2016-202611 years
1×2 Plate, 1-Pin Hole, Bottom32529
1163
2871053
1091097
52236
2001-202424 years
1×2 Plate, 2-Pin Holes, Top32530
378
1495423
604330
13766
2000-202627 years
2×4 Pin Hole Hinge, Top43045
901
487802
199759
52221
2012-202615 years
2×4 Pin Hole Hinge, Bottom43056
1103
2661086
1271015
61850
2012-202615 years
2×2 Plate, 1-Pin, Bottom2476
418
1564409
416454
14686
1988-202639 years
2×2 Plate, 2-Pins, Bottom15092
1402
2721077
991161
24041
2014-202613 years
2×2 Plate, 1-Pin, Top2460
308
1974336
937206
13760
1988-202639 years
2×4 Plate, 2-Pins, Ends40687
609
823569
347519
81356
1998-202629 years
2×2×⅔ Wheel Fork77598
3141
422596
222606
15701
2021-20266 years
2×2 Plate, 2-Pins, Wide47720
1365
2351161
132995
24051
2004-202623 years

Beam

Studless beams that can be connected using Technic pins and axles.

Part Name(Part Number)
Overall
Rank
# Pieces(Rank)
# Sets(Rank)
# Colors(Rank)
Years
Produced
1×1 Beam (Spacer)18654
186
5411145
850230
22323
2015-202612 years
1×2 Beam43857
405
1606393
405462
15613
2002-202625 years
1×2 Beam w/ 1-Axle Hole60483
207
4931159
734265
20391
2008-202619 years
1×3 Beam32523
137
6202126
1013188
32138
2000-202627 years
1×3 Beam w/ 1-Axle Hole7229
2434
532333
232534
42748
2025-20262 years
N
1×5 Beam32316
154
6108127
904214
29177
2000-202627 years
1×7 Beam32524
173
5192147
760250
30164
2001-202626 years
1×9 Beam40490
231
3826200
634307
23297
2001-202626 years
1×11 Beam32525
242
3516225
533364
26233
2001-202626 years
1×13 Beam41239
349
2240311
387483
20396
2004-202623 years
1×15 Beam32278
234
3664214
497387
30170
2000-202627 years
1×7 Beam w/ Alternating Holes2391
1275
2391149
561566
81381
2023-20264 years
N
1×9 Beam w/ Alternating Holes6612
3069
273120
123424
52440
2025-20262 years
N
1×11 Beam w/ Alternating Holes73507
1388
323986
661440
33204
2021-20266 years
1×15 Beam w/ Alternating Holes71710
1514
2171205
531621
42648
2021-20266 years
1×7 Beam, Bent (4-4)32348
427
1218468
345521
21366
2000-202627 years
1×9 Beam, Bent (6-4)6629
419
1465428
348518
18471
1996-202631 years
1×9 Beam, Bent (7-3)32271
392
1206470
329541
27222
1999-202628 years
1×11½ Beam, Double Bent32009
344
1824357
439436
23305
1997-202630 years
2×4 Beam, L-Shape32140
156
6028129
785244
31147
1999-202628 years
3×5 Beam, L-Shape32526
200
4547172
626317
29179
2000-202627 years
3×5 Liftarm, L-shape w/ Alternating Holes2477
1689
1871306
371948
42657
2023-20264 years
N
3×3 Beam, T-Shape60484
476
1637387
400473
91200
2009-202618 years
2×3 Beam, ¼-Ellipse71708
800
592710
991158
16572
2021-20266 years
2×5 Beam, ¼-Ellipse80286
1396
1431484
521635
101125
2022-20265 years
3×9 Beam, ¼-Ellipse3916
3681
263186
74323
33428
2023-20253 years
N
3×13 Frame, 1-Cross Beam4526
3363
422596
153085
15701
2024-20263 years
N
3×19 Frame, 2-Cross Beams67491
2013
971790
272314
52288
2022-20265 years
5×7 Frame, Open Center64179
782
736615
150915
91214
2009-202618 years
7×11 Frame, Open Center39794
1587
1571421
601518
42666
2019-20268 years
11×15 Frame, Open Center39790
2425
502400
252424
42759
2020-20256 years
11×19 Technic Frame (Baseplate)39369
4343
104614
64713
43046
2020-20234 years
3×5 Beam, H-Shape14720
1033
377906
138954
52227
2014-202613 years
5×11 Frame, H-Shape, Open Center64178
1775
1581416
881251
15556
2009-202618 years
3×3 Pin Connector Block39793
986
377905
931211
101091
2019-20268 years
7×16 Frame, A-Shape w/ Bars79768
3714
293041
64601
33406
2023-20253 years
N
Ø11 Frame, Round77107
3459
163855
93956
62107
2021-20244 years
Ø15 Frame, Round3250
3544
173776
93947
52496
2023-20264 years
N
4×2 Beam, L-Shape w/ 90° Offset11455
1643
1441477
551582
42673
2013-202614 years
2×3 Liftarm, U-shape3167
2166
931827
302175
33261
2024-20263 years
N

Thin Beam

A small selection of 'thin' beams which are ½ of the thickness of a standard LEGO Beam.

Panel

A selection of smooth elements to give Technic models and nicely finished appearance.

Panel Curved Panel

Technic panels that are curved or bent on a single axis.

Panel Fairing

Technic panels with complex shapes that are curved on multiple axes.

Part Name(Part Number)
Overall
Rank
# Pieces(Rank)
# Sets(Rank)
# Colors(Rank)
Years
Produced
#7 2×3 Fairing, Tapered, A. 2387
987
2991036
611497
20418
2023-20264 years
N
#8 2×3 Fairing, Tapered, B. 2389
981
3011033
621481
20417
2023-20264 years
N
#3 3×2 Fairing, Angled 22.5°2457
2025
632163
222589
101160
2023-20264 years
N
#21 2×5 Fairing, B.11946
574
656671
186805
25264
2013-202614 years
#22 2×5 Fairing, A.11947
569
652673
190788
26240
2013-202614 years
#10 3×3 Fairing, Tapered, Right2403
1499
981785
371953
15665
2023-20264 years
N
#9 3×3 Fairing, Tapered, Left2395
1513
961793
371954
15666
2023-20264 years
N
#2 3×5 Fairing, B87086
919
2321167
1231036
18500
2010-202617 years
#1 3×5 Fairing, A87080
900
2451131
1251028
18496
2010-202617 years
#4 3×7 Fairing, B64391
950
2081232
1231037
17545
2009-202618 years
#3 3×7 Fairing, A64683
929
2131215
1261022
18503
2009-202618 years
#6 3×11 Fairing, B64393
1018
1571417
941208
21384
2009-202618 years
#5 3×11 Fairing, A64681
1020
1551425
951198
21385
2009-202618 years
#41 3×11 Inv. Fairing, B5742
5075
85007
55069
24636
2024-20263 years
N
#40 3×11 Inv. Fairing, A5741
5074
85007
55069
24636
2024-20263 years
N
#14 5×7 Fairing, B64680
1466
951803
491710
13823
2009-202517 years
#13 5×7 Fairing, A64394
1474
951803
481733
13823
2009-202517 years
#18 5×11 Fairing, B64682
1377
931820
521643
17550
2009-202618 years
#17 5×11 Fairing, A64392
1373
941814
521642
17549
2009-202618 years
#60 5×7 Fairing, Tapered, Right80268
2651
223386
172958
91335
2022-20254 years
#61 5×7 Fairing, Tapered, Left80267
2650
223386
172958
91335
2022-20254 years
#62 5×4 Fairing, Tapered, Right80274
2332
372709
192777
101176
2022-20265 years
#63 5×4 Fairing, Tapered, Left80278
2375
372710
192777
91317
2022-20265 years
5×3×2 Fairing, Rounded, R.2442
3115
183684
113606
81528
2023-20264 years
N
5×3×2 Fairing, Rounded, L.2438
3020
213456
113589
81515
2023-20264 years
N

Connector

A wide range of parts with pin and axle connectors that can be used to connect Technic parts together.

Connector Axle

Standard axles and straight connectors with an axle connector on one end.

Connector Other Connector

Other connectors with a more complex shape.

Part Name(Part Number)
Overall
Rank
# Pieces(Rank)
# Sets(Rank)
# Colors(Rank)
Years
Produced
Bush3713
115
1474259
194983
81353
1977-202650 years
½ Bush32123
93
1619652
207577
101061
1980-202647 years
2L Axle Connector59443
101
940583
1545121
21350
2006-202621 years
3L Axle Connector42195
474
1789360
312566
11952
2016-202611 years
2L Pin Connector62462
102
6458124
1513123
31146
1995-202632 years
5⅓ Spiral Staircase Connector40244
1278
2071236
831290
61857
2001-202424 years
5L Axle Connector, w/out Friction 1-Side5443
3248
502405
74307
33325
2025-20262 years
N
Axle & Pin w/ Extension53586
1478
1751360
721391
42664
2006-202621 years
2L Axle & Pin, Perpendicular6536
121
878589
1030183
26230
1993-202634 years
3L Axle & 2-Pin Hole42003
230
4628167
705273
17515
2002-202625 years
3L 2-Axle & Center Pin32184
237
3762205
702275
20393
1999-202628 years
1×2 Beam w/ Bar, 45°85940
1427
2371158
1041129
24049
2009-202618 years
1×2 Beam w/ Axle, Side7244
2560
682107
172921
33289
2025-20262 years
N
1-Axle & Double Pin32291
350
1768365
443432
22333
2000-202627 years
1-Axle & 3-Pin63869
564
1569407
313561
61815
2009-202618 years
4L Axle & Double Pin98989
2174
931828
401887
24097
2012-202514 years
3-Pin, L-Shape44809
826
450838
153907
12869
2003-202624 years
2×4 2-Axle & 2-Pin80910
3692
183723
143226
24352
2021-20266 years
Split Axle & 2-Pin69819
406
1556411
445431
14687
2002-202625 years
2×2×2 Axle & Pin, Split92907
793
662662
223712
61827
2011-202616 years
2L Axle w/ Axle Hole (Reverser Handle)6553
336
1898346
693278
15611
1993-202634 years
2×3 4-Axle Connector11272
2141
771990
511663
24111
2013-202614 years
Axle & Axle Connector42135
172
4490173
1025185
26231
1997-202630 years
2-Axle Connector, Rubber45590
991
691641
269623
15502
2003-202624 years
Toggle Dbl. w/ 2-Pins48496
1833
1081682
551585
33247
2004-202623 years
Toggle Double w/ Axles & Pins87408
1428
2211197
1111086
24052
2010-202617 years
Toggle Joint Connector32126
589
1035511
225704
11960
1980-202647 years
3L Double Pin65098
579
884558
337531
91210
1999-202628 years
3L Pin, 2-Pins & 1-Pin Hole15461
998
565735
160884
33194
2014-202613 years
1×3 Cross Block w/ 2-Pins, 3-Pin Holes2393
1644
2201200
601513
24053
2023-20264 years
N
3L H-Shaped Connector w/ 4-Pins65489
747
1313452
326545
24018
2004-202623 years
1×3 Double Pin w/ 2-Clips19159
1902
1321539
521636
24078
2004-202320 years
3×3 L-Shaped Connector w/ 4-Pins55615
1283
393892
1001153
24031
2006-202621 years
2×2 Liftarm w/ Cutout, Axle Holes72008
2878
352803
192783
33375
2021-20266 years
3L w/ 2-Pin Holes32557
715
581718
188798
13785
2000-202627 years
3×3 Round Connector98585
769
514777
173839
12867
2012-202615 years
31mm D. × 15mm w/ 7-Pin Holes60208
614
640684
204749
18477
1986-202641 years

Gears

Bring models to life using gears and racks to create movement.

Part Name(Part Number)
Overall
Rank
# Pieces(Rank)
# Sets(Rank)
# Colors(Rank)
Years
Produced
8 Tooth10928
339
2414296
707272
11950
1977-202650 years
8 Tooth w/out Friction11955
4489
193663
74343
15874
2013-202513 years
12 Tooth69778
2323
1031739
401884
15585
2022-20265 years
12 Tooth, Bevel6589
414
2291303
548358
71548
1995-202632 years
12 Tooth, Dbl. Bevel32270
451
2109320
745260
42624
1999-202628 years
14 Tooth, Thick Bevel69762
3643
223420
93930
33465
2022-20265 years
16 Tooth94925
530
1757370
408461
52202
1979-202648 years
16 Tooth, Dbl. Clutch18946
1584
325983
731381
15527
2015-202612 years
20 Tooth69779
2535
851920
292215
15615
2022-20265 years
20 Tooth, Dbl. Clutch81346
3687
233373
172956
15818
2022-20265 years
20 Tooth, Bevel32198
1170
3081015
146930
33206
1999-202628 years
20 Tooth, Dbl. Bevel32269
587
1001516
404463
61820
1999-202628 years
20 Tooth Bevel w/ Pin Hole87407
1765
2201201
651454
15540
2010-202617 years
20 Tooth, Dbl. Clutch, Dbl. Bevel35185
2804
482457
322114
15679
2018-20269 years
22 Tooth, Thick Bevel69761
5119
104695
64713
16138
2022-20254 years
24 Tooth24505
453
1334448
484401
11957
1977-202650 years
28 Tooth, Dbl. Bevel46372
2479
592229
322109
24132
2019-20268 years
28 Tooth, Dbl. Bevel w/ Pin Hole65413
4656
124403
93992
16031
2020-20245 years
Differential Housing65414
3792
223442
153113
15830
2020-20256 years
28 Tooth, Differential62821
2108
931830
691420
15607
2008-202619 years
28-Tooth Turntable, Top99010
2105
1061707
611505
15582
2012-202615 years
28-Tooth Turntable Base99009
2088
1081684
621491
15579
2012-202615 years
60 Tooth Turntable, Top18938
2100
692095
471743
33288
2015-202612 years
60 Tooth Turntable, Base18939
2422
692099
471743
15641
2015-202612 years
36-Tooth, Dbl. Bevel32498
1521
1721368
831292
33229
2002-202625 years
40 Tooth3649
835
511780
164867
91220
1977-202549 years
1L Worm Gear27938
3142
402644
232545
15708
2017-20259 years
2L Worm Gear32905
743
522769
277613
81363
1985-202642 years
6L Worm Gear73763
2974
492432
163003
24146
2023-20264 years
N
2×2×1⅔ w/ Worm Gear Hole73764
4040
144105
113623
24436
2023-20253 years
N
6×6 15-Tooth ¼ Gear Ring78442
4060
183703
64629
33504
2021-20266 years
11×11 35-Tooth ¼ Gear Ring24121
2043
1001758
182826
71629
2016-202611 years
4×4×1⅔ Gearbox6585
1528
1031734
891247
52282
1995-202632 years
2×4×3⅓ Gearbox6588
1900
722054
571560
42722
1995-202531 years
8 Tooth Gear w/ 1½L Axle24014
3284
402644
182843
15708
2016-202510 years
1×4 Rack3743
617
1185473
340527
52204
1977-202650 years
1×7 Rack w/ 2-Pin Holes & 2-Axle Holes87761
1894
1141640
921226
15574
2010-202617 years
1×13 Rack w/ 2-Pin Holes & 2-Axle Holes64781
2596
672119
332084
15642
2009-202618 years
1×14×2 Rack Housing18940
2778
273115
163028
62041
2015-20239 years
1×14×2 Rack w/ 4-Axle Holes & 7-Pin Holes18942
3440
332895
172939
15742
2015-202410 years

Link & Chain

A selection of parts to transfer power to a different area of the model.

Steering

Parts to assist with steering functionality.

Part Name(Part Number)
Overall
Rank
# Pieces(Rank)
# Sets(Rank)
# Colors(Rank)
Years
Produced
3×1 Steering Arm w/ Towball Socket5997
4241
263205
74323
15777
2025-20262 years
N
5×1 Steering Arm w/ Towball Socket31794
2210
971791
272314
33256
2014-202613 years
6×2 Steering Arm w/ Towball Socket57515
1905
1341530
381929
33239
2008-202518 years
2×2 Steering Arm w/ 2-Pins32069
1569
1461467
671431
42671
1998-202427 years
Steering Wheel Hub, 3-Pins92909
1797
1801334
481727
24062
2011-202616 years
Steering Hub Holder w/ 2-Pin Holes11950
2250
752015
322106
33281
2013-202614 years
Steering Hub Holder w/ Pin & Axle Holes65766
2745
642159
262377
15648
2016-202611 years
Steering Portal Frame92908
3539
442540
113555
15691
2011-202414 years
Steering Hub w/ Shock Socket69636
5395
75238
45469
24704
2022-20254 years
Rotation Socket w/ 2-Pins80563
1927
1291551
501679
24080
2022-20265 years
Ø3 Steering Wheel2819
940
2401145
204751
91238
1993-202634 years
Ø4 Steering Wheel2741
2085
512368
371961
61970
1988-202639 years
Steering Yoke40001
2289
472471
461763
33335
2001-202626 years
3L Universal Joint61903
1342
363924
139950
15522
2008-202619 years
Ø3 Rotation Disk w/ 3L Beam, Socket44225
1231
2641089
791320
61851
2003-202624 years
Ø3 Rotation Disk w/ 3L Beam, Plug44224
1364
2571102
721389
42643
2003-202624 years
Steering Arm w/ 3-Towballs, Pin Hole15460
2098
1151630
571556
15573
2014-202613 years
CV Joint, Ball32494
1914
1471463
451770
24069
2001-202626 years
CV Joint, Socket92906
2255
1031739
471741
15585
2011-202616 years
3L CV Joint, Ball52731
3349
432564
153082
15696
2019-20268 years
5L Sliding CV Joint, Ball77590
5062
114543
64697
16093
2021-20266 years
2L CV Joint, Socket4192
6549
65595
26700
16455
2023-20242 years
N
4L CV Joint, Socket52730
3670
303007
133307
15750
2019-20268 years
Disc Brake Hub w/ 3-Pin Holes35189
4318
183723
64629
24352
2018-20247 years
Ø6 Brake Disk w/ Axle Hole65416
4362
183741
93943
15884
2020-20256 years
Dbl. Ø3 Rotation Disk w/ 3L Beam, Plug5652
6032
75318
35965
16350
2024-20252 years
N
3×1 w/ Steering Socket65453
3949
213504
133331
15839
2011-202616 years
5×3 H-Shape w/ Steering Socket39370
5192
75238
55097
24704
2020-20256 years
5×4 C-Shape w/ Steering Ball65452
4377
163925
103764
15920
2011-202616 years

Engine

Parts to create an engine or implement a shifting system.

Mechanical & Pneumatic

Linear motion driven by gears or pneumatics.

Other Technic

Balls, propellers, and other hard-to-categorize parts.