1. Sets
  2. Technic
  3. Supplementary

LEGO Technic / Supplementary Sets

Supplementary is a subtheme of Technic that consists of 18 sets that ran from 1977 to 1997. Most sets were released in 1979 which accounted for 7 sets. As of today, the average annual growth of sets in Technic Supplementary is approximately 2.9% per year.
Most valuable Technic Supplementary set
879 Gear Wheels with Chain Links $179.09
Largest Technic Supplementary set
8710 Technical Elements 124 pieces
Most owned Technic Supplementary set
8720 9V Motor Set
The LEGO Technic Supplementary theme, active from 1977 to 1997, consists of a variety of accessory sets designed to enhance and expand existing Technic models. These sets provided additional parts, such as gears, wheels, axles, and motors, allowing builders to add more functionality and complexity to their creations. Notable sets in this theme include the "870 Technical Motor," which introduced a battery-powered motor for motorizing models, and the "8710 Supplementary Set," a collection of gears and other essential mechanical parts.
18 sets

8735 Motor Set, 9 V

Theme / Subtheme Technic / Supplementary
Year 1997
Pieces 60
Availability Retired
8735 LEGO Technic Motor Set, 9 V
Retail $39.99
Value $55.14
Growth  +37.9%
Annual growth 1.2%

8714 The LEGO Technic Guys

Theme / Subtheme Technic / Supplementary
Year 1993
Pieces / Figures 9 / 3
Availability Retired
8714 The LEGO Technic Guys
Retail $8.99
Value $68.34
Growth  +660.2%
Annual growth 4.0%

8720 9V Motor Set

Theme / Subtheme Technic / Supplementary
Year 1990
Pieces 57
Availability Retired
8720 LEGO Technic 9V Motor Set
Retail $35.99
Value $84.75
Growth  +135.5%
Annual growth 3.8%

8712 Technic Figures

Theme / Subtheme Technic / Supplementary
Year 1988
Pieces / Figures 10 / 3
Availability Retired
8712 LEGO Technic Figures
Retail $8.25
Value $59.43
Growth  +620.4%
Annual growth 3.0%

8700 Power Pack

Theme / Subtheme Technic / Supplementary
Year 1982
Pieces 26
Availability Retired
8700 LEGO Technic Power Pack
Retail $26.00
Value $66.25
Growth  +154.8%
Annual growth 2.2%

8710 Technical Elements

Theme / Subtheme Technic / Supplementary
Year 1981
Pieces 124
Availability Retired
8710 LEGO Technical Elements
Retail $12.00
Value $41.27
Growth  +243.9%
Annual growth 2.4%

879 Gear Wheels with Chain Links

Theme / Subtheme Technic / Supplementary
Year 1979
Pieces 87
Availability Retired
879 LEGO Technic Gear Wheels with Chain Links
Retail $4.50
Value $179.09
Growth  +3879.8%
Annual growth 8.3%

878 Piston Parts

Theme / Subtheme Technic / Supplementary
Year 1979
Pieces 52
Availability Retired
878 LEGO Technic Piston Parts
Retail $4.50
Value $31.91
Growth  +609.1%
Annual growth 4.4%

874 Yellow Beams with Connector Pegs

Theme / Subtheme Technic / Supplementary
Year 1979
Pieces 38
Availability Retired
874 LEGO Technic Yellow Beams with Connector Pegs
Retail $5.00
Value $43.15
Growth  +763.0%
Annual growth 2.7%

875 Red Beams with Connector Pegs

Theme / Subtheme Technic / Supplementary
Year 1979
Pieces 38
Availability Retired
875 LEGO Technic Red Beams with Connector Pegs
Retail $5.00
Value $36.43
Growth  +628.6%
Annual growth 3.8%

876 Blue Beams with Connector Pegs

Theme / Subtheme Technic / Supplementary
Year 1979
Pieces 38
Availability Retired
876 LEGO Technic Blue Beams with Connector Pegs
Retail $5.00
Value $48.68
Growth  +873.6%
Annual growth 5.1%

877 Steering Gear Parts

Theme / Subtheme Technic / Supplementary
Year 1979
Pieces 24
Availability Retired
877 LEGO Technic Steering Gear Parts
Retail $3.50
Value $107.22
Growth  +2963.4%
Annual growth 7.7%

880 12 Volt Motor

Theme / Subtheme Technic / Supplementary
Year 1979
Pieces 22
Availability Retired
880 LEGO Technic 12 Volt Motor
Value $61.93

961 Parts Pack

Theme / Subtheme Technic / Supplementary
Year 1978
Pieces 78
Availability Retired
961 LEGO Technic Parts Pack
Value $76.41

872 Two Gear Blocks

Theme / Subtheme Technic / Supplementary
Year 1978
Pieces 77
Availability Retired
872 LEGO Technic Two Gear Blocks
Retail $19.50
Value $37.40
Growth  +91.8%
Annual growth 2.5%

960 Power Pack

Theme / Subtheme Technic / Supplementary
Year 1978
Pieces 22
Availability Retired
960 LEGO Technic Power Pack
Retail $22.50
Value $68.32
Growth  +203.6%
Annual growth 2.4%

871 Supplementary Set

Theme / Subtheme Technic / Supplementary
Year 1977
Pieces 78
Availability Retired
871 LEGO Technic Supplementary Set
Value $102.89

870 Technical Motor, 4.5 V

Theme / Subtheme Technic / Supplementary
Year 1977
Pieces 22
Availability Retired
870 LEGO Technical Motor, 4.5 V
Value $78.43

Subtheme Pricing

Retail
~$200.72
New/Sealed
Value
$1,247.04
Annual growth
+2.94%
Used
Value
$604.88

Yearly Pricing

Sets
Retail
Value
1997
1
$39.99
$55.14
1993
1
$8.99
$68.34
1990
1
$35.99
$84.75
1988
1
$8.25
$59.43
1982
1
$26.00
$66.25
1981
1
$12.00
$41.27
1979
7
~$28
$508.41
1978
3
~$42
$182.13
1977
2
N/A
$181.32

Community Stats

The following are the top 10 most owned sets by collectors in Technic Supplementary.
#19V Motor Set
#2Motor Set, 9 V
#3The LEGO Technic Guys
#4Power Pack
#5Technical Motor, 4.5 V
#6Technic Figures
#7Two Gear Blocks
#8Supplementary Set
#9Power Pack
#10Technical Elements

About LEGO Technic

TECHNIC is one of The LEGO Company's main lines based on creating detailed model machines and mechanical toys with specialized beams, axles, gears and connectors and primarily designed for older children and adults. The theme was first introduced as the Expert Builder series in 1977, but was officially renamed as TECHNIC in 1984. TECHNIC is still an active theme, and is one of the longest running themes in LEGO history. While most TECHNIC sets are vehicles that use pieces to mimic real vehicles, such as engine pieces, suspension, pneumatic, and transmission pieces, the TECHNIC parts have been used by various other System themes as well as LEGO Mindstorms.