Most Valuable LEGO Technic Sets

It features a piston-engine under a lifting bonnet and includes a plough that can be re-built as a harrow. It was also known as Havester.

It consists of a motorcycle with a steerable front fork, a chain-driven 1-cylinder engine, and a sidecar. The engine is driven by the rear wheel through a chain connected to a new 16-tooth gear, with a final gear ratio of 3:1. The frame is built from pinned beams, allowing for unique angles, while the fenders and exterior details are made from standard plates.

Developed under license from Bell and Boeing, the model featured working tiltrotors, motorized landing gear, and a winch, showcasing the unique engineering of the real-world aircraft.

It consists of a helicopter with rotating main and tail rotors, a collective pitch mechanism controlled from the pilot stations, and flybars with paddles on the main rotor. The rotors are driven by a crank and gear system, with a realistic speed ratio between the main and tail rotors. The landing skids are built with beams and connectors for stability.

It builds a silver Formula 1–style car with working steering operated from the cockpit via a u-joint and spur gear linkage.

It contains instructions for alternative models and can be built into various motorcycle models. It was only released in the US and was the same as set 857.

The set features instructions for 4 different engines including a 3 cylinder inline engine, a V6 engine, a 6 cylinder horizontally opposed engine, and a 2-cycle engine.

The set model is based on the Liebherr R 9800, a mining excavator and the biggest hydraulic excavator in the world and was developed in partnership with Liebherr-Mining Equipment Colmar SAS in France.

The Lego Technic Porsche 911 GT3 RS kit comes in an impressive 578-page long manual with a total of 856 steps in the instructions.

The set features instructions for 4 different engines including a 3 cylinder inline engine, a V6 engine, a 6 cylinder horizontally opposed engine, and a 2-cycle engine.

It consists of a vehicle chassis with a rear-mounted 4-cylinder engine, a 3-speed transmission, working rear differential, independent rear suspension, and rack-and-pinion steering. It also features adjustable and reclining seats. The engine includes a fan and exhaust manifolds, while the differential allows smooth turns. It was also called "Car-Chassis With Flat 4 Engine".

It builds a truck with a front-mounted yellow bucket and a tipping rear bed, with steering controlled via a wheel in the cab or a vertical exhaust-stack control.

It consists of a tractor with rack-and-pinion steering, a PTO (Power Take Off) system driven by the right rear wheel to power implements, and a four-bar linkage to raise and lower attachments. The primary model features a thresher, driven by the PTO, with rotating cutting wheels.

It consists of a bulldozer with a bucket that raises and dumps using interconnected rack-and-pinion systems, driven by cranks at the rear. The vehicle rides on large tracks made of 106 chain links around 40-tooth gears. Traditional studded construction is used for the body, while connectors form the functional bucket linkage. The bucket can lift from ground level and tip up to 90 degrees for dumping.

It was also called "LEGO TECHNIC Daytona VX4 Super Car". Creates two models, first is a black sports car with yellow pin-striping, V8 rear-mount engine, 4-wheel steering, 4-wheel drive, and 4-wheel independent suspension.

It consists of an app-controlled replica of the Cat D11 Bulldozer with modular sections, large tracks, and authentic functions like blade and ripper movement.

It consists of two motors: one LEGO TECHNIC motor that controls four functions—opening the hatches, lifting and turning the Canadian arm, and operating the FOS light. A micro motor unfolds the satellite’s wings. Additionally, it can be rebuilt into a submarine, utilizing the motors for different functions. It is a Tech Build.

It consists of a Control Center with programmable functions, three high-speed 9V motors, flex system parts, 14 silicone belts, an AC/DC transformer, and 18 long beams. The models include a helicopter with flight controls, a dinosaur with moving limbs, and an airboat with driving and steering functions. It was the first LEGO Technic set to use the Control Center. Alternative instructions included were for a helicopter, dinosaur and boat. All of which could use the Control Center for motorization.

This was the first and only motorized pneumatic compressor. It was also called "Technic Truck With Compress & Pneumatic System".

The model features realistic movement with tank steering, rotating turntable, luffing jib, and winch, controlled via the CONTROL+ app, standing over 38 inches high.