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  2. 1991
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  4. Technic

LEGO 1991 / Service Packs / Technic Sets

In 1991, LEGO released 3 Service Packs Technic sets, all of these sets have been retired. For that year, the total price of all retail sets cost $11, today those sets are valued around $57, a growth of 404%.
Most valuable 1991 LEGO Service Packs Technic set
5118 Flex System Elements $43.62
Most owned 1991 Service Packs Technic set
5099 Pneumatic Valves
3 sets

5099 Pneumatic Valves

Theme / Subtheme Service Packs / Technic
Year 1991
Pieces 1
Availability Retired
5099 LEGO Technic Pneumatic Valves
Retail $2.25
Value $5.71
Growth  +153.8%
Annual growth 2.6%

5118 Flex System Elements

Theme / Subtheme Service Packs / Technic
Year 1991
Pieces 35
Availability Retired
5118 LEGO Technic Flex System Elements
Retail $5.99
Value $43.62
Growth  +628.2%
Annual growth 5.8%

5272 Cylinder Motor

Theme / Subtheme Service Packs / Technic
Year 1991
Pieces 9
Availability Retired
5272 LEGO Technic Cylinder Motor
Retail $2.99
Value $7.22
Growth  +141.5%
Annual growth 3.3%

Year Pricing

Retail
$11.23   (for all 3 sets)
New/Sealed
Value
$56.55
Growth
+403.56%
Annual growth
+2.94%
Used
Value
$45.02

Community Stats

The following are the top 3 most owned 1991 Service Packs Technic sets by LEGO collectors.
#1Pneumatic Valves
#2Cylinder Motor
#3Flex System Elements

About LEGO Service Packs Technic

Technic service packs were the parts packs of the Technic line from 1978 to 1999, sold for builders who wanted more of a part than their sets held or who were making models of their own. They follow the growth of Technic itself.
1991 LEGO Sets
1991 brought LEGO Paradisa, a pastel-toned, beachfront subtheme within Town designed to broaden LEGO’s appeal. Pirates added the Imperial Guards, while Space introduced Blacktron II with modular white-and-black spacecraft. The 9V Train system replaced earlier electric formats, simplifying operation with metal track rails. Technic advanced with motorized models like the Control Center, highlighting LEGO’s growing focus on realistic engineering and interactivity.