Best Big Knex Sets in 2022 [*Top Picks*]

Looking for the best big knex sets on the market? We’ve got you covered. Check out our ratings of absolute bestsellers below and make a final decision.

2745 Reviews Scanned

  • KID K’NEX – Build A Bunch Set – 66 Pieces – For Ages 3+ Construction  Educational Toy (Amazon Exclusive), packaging may vary
    Bestseller #1
    KID K’NEX – Build A Bunch Set – 66 Pieces – For Ages 3+ Construction  Educational Toy (Amazon Exclusive), packaging may vary (386)
      66 CHUNKY PIECES –Create fun and friendly creatures with the KID K’NEX Build a Bunch Set. It contains 66 soft, colorful, and chunky rods and connectors that easily stack, snap, and plug together. Plus, fun and unique parts such as wheels, eyes, and tails will bring your child’s creations to life. This set includes chunky multicolored pieces that are perfect for young minds and little hands. 30 BUILDING IDEAS – Your child will have fun building 30 different models, including a colorful airplane, a train, bugs, animals, underwater creatures, and more. Let your little ones explore their young imaginations by discovering how to build colorful creations on their own. COMES WITH IDEA SHEET – Children will piece together the chunky and colorful KID K’NEX rods, connectors, wheels, eyes, and tails for hours. A poster-sized sheet is included for the 30 building ideas you can make with this set. Guide your preschooler in assembling vehicles, bugs, animals, and other creatures during playtime. CONVENIENT STORAGE – The KID K’NEX Build a Bunch Set is carefully packaged in a handy, easy-open box for effortless storage and portability. Everything can be easily and quickly stored in this durable container. Once playtime is over, place the parts in the handy storage box for a quick and easy cleanup. Packaging may vary. STEAMagination: It’s the connection of STEAM (science, technology, engineering, arts & math) with a preschooler’s natural curiosity and creativity and it powers the fun of each and every KID K’NEX building set. Building with KID K’NEX puts preschoolers on a path towards a fundamental understanding of STEAM/STEM subjects. DEVELOPMENTAL BENEFITS: KID K’NEX supports key areas of a preschooler’s developmental growth. As they click the different parts together and discover how the building system works, they’re strengthening hand-eye coordination, fine motor skills, problem-solving skills, spatial awareness and exercising their imagination! COMMITMENT TO QUALITY: KID K’NEX rods and connectors are responsibly made in America at a landfill-free, zero-waste green manufacturing facility in Hatfield, Pennsylvania. We test to the strictest quality and safety standards, ensuring that your child has a successful, trouble-free building experience. PARTS GUARANTEE: Broken part? Missing part? If you find yourself in need of a replacement for any reason, just give us a call! We’ll get you what you need so that your child can get back to building as soon as possible.
  • K’NEX – 35 Model Building Set – 480 Pieces – For Ages 7+ Construction Education Toy (Amazon Exclusive)
    Bestseller #1
    K’NEX – 35 Model Building Set – 480 Pieces – For Ages 7+ Construction Education Toy (Amazon Exclusive) (386)
      CLASSIC PIECES – This building set comes with 480 classic K’NEX parts and pieces. It includes rods and connectors that are attached to one another in different ways, allowing kids to unleash their creativity and skills in designing a variety of shapes, figures, and models. The snap-fit pieces stick together securely and can be easily reassembled into other creations. REAL MOVING PARTS – Unlike other building toys, K’NEX lets builders create different models that actually move. This building set allows them to make interactive toys and figures like trucks, airplanes, helicopters, and auto parts such as wheels, wings, rotors, and tracks. Constructing your own buildings, amusement park rides, and bridges isn’t just a dream when you have this building set! CONVENIENT STORAGE – It can be a problem to store small plastic toy parts into one place, and the last thing you want is them getting lost! Keep all the K’NEX parts in one place that is easy to access. Store all those precious pieces in this handy treasure chest that kids will always love to open. Packaging may vary. VERSATILE – K’NEX 35 Model Building Set includes an instruction booklet that shows builders how to create 35 unique models with its step-by-step guidelines. This toy is ideal for kids ages 7 and above, allowing them to create anything that their minds can come up with. Watch your kids’ imaginations grow through the sheer amount of models they can make with the K’NEX 35 Model Building Set.
  • K'NEX Education ‒ STEM Explorations: Roller Coaster Building Set – 546 Pieces – Ages 8+ Construction Education Toy
    Bestseller #1
    K'NEX Education ‒ STEM Explorations: Roller Coaster Building Set – 546 Pieces – Ages 8+ Construction Education Toy (386)
      546 ASSORTED PIECES –This K’NEX Education set includes 546 parts, plus a battery-powered motor, for a single child or a team of two to three children building a working roller coaster. Two additional models are also included in this set — a ramp and a half-pipe — which can be built one at a time. The set requires two AA batteries, which are not included. OFFERS HANDS-ON LEARNING – K’NEX Education models offer proactive opportunities for introducing children to scientific inquiry, investigation, and experimentation. Inquiry-based lessons challenge young learners as they build, investigate, problem-solve, discuss, and evaluate scientific and design principles in action. EXPERIMENT GUIDE – Once a ride is built, an activity booklet guides learners through three hands-on, inquiry-based experiments. This experiment guide aligns with the national STEM standards and is designed for grades 5‒9. Students will learn about the relationships between time, distance, speed, and more! PROMOTES TEAMWORK – This educational engineering set is more fun when constructed with friends. One to three kids can put their heads together and figure out the structure, exchanging ideas as they tinker with the bits and parts, and solving the model faster through teamwork. They’ll build camaraderie and develop social skills as they play. STEAMagination: It’s the connection of STEAM (science, technology, engineering, arts & math) with a child’s natural curiosity and creativity and it powers the fun of each and every K’NEX building set. Building with K’NEX puts children on a path towards a fundamental understanding of STEAM/STEM subjects. LESSON PLANS AND EXPERIMENTS: All K’NEX Education sets come with either a comprehensive guide for teachers or an experiment guide for student-led learning. All lesson plans and experiment guides are written by expert educators and feature hands-on, inquiry-based projects that engage students in today’s busy classroom. ALIGNED TO NATIONAL STANDARDS: K’NEX Education teacher guides and experiment guides are aligned to national educational standards, including ITEEA, NSES, NCTM, NGSS and Common Core. REAL WORLD LEARNING: Study after study reveals that students have more success learning STEM subjects through activities related to the real world rather than reading about abstract concepts in textbooks. K’NEX Education sets allow students to build replicas of real-world machines and contraptions and through the lesson plans and experiments, gain a concrete understanding of the principles that make them work.
  • K'nex Beginner 40 Model Building Set - 141 Parts - Ages 5 & Up - Creative Building Toy, Multi
    Bestseller #1
    K'nex Beginner 40 Model Building Set - 141 Parts - Ages 5 & Up - Creative Building Toy, Multi (452)
      Easy build parts: new parts designed specifically for 5 year old builders allows them to build on a flat, 2D surface, then sandwich The flat builds together into a 3D creation! This beginner building set includes 141 parts, including K'NEX rods and connectors which are manufactured in a zero-waste, landfill-free facility in Pennsylvania Build & rebuild: instructions and ideas for 40 different models are included, like a car, a skyscraper, an airplane, a rowboat, and so much more! Stem learning fun: building with K'NEX helps strengthen fine motor skills, manual dexterity, and spatial awareness; putting them on a path towards a greater understanding of STEM subjects. K'nex rods and connectors are responsibly made in America at a landfill-free, zero-waste green manufacturing facility in Hatfield, Pennsylvania.
  • K'NEX 100 Model Imagine Building Set (Amazon Exclusive)
    Bestseller #1
    K'NEX 100 Model Imagine Building Set (Amazon Exclusive) (386)
      CLASSIC PIECES – This set comes with 863 classic K’NEX rods and connectors. These pieces can be attached to one another in different ways. It allows your children to create a multitude of shapes, figures, and structures with ease. The snap fit pieces stick together securely and can be easily reassembled into other creations. REAL MOVING PARTS – Unlike other building toys, K’NEX allows kids to create unique models that actually move. Kids can make interactive toys using K’NEX parts whether its wheels, rotors, wings, and tracks. Making rolling cars, working amusement park rides or a transforming animal isn’t just a dream when you have this 100 Model Building Set! CONVENIENT STORAGE – With over 860 pieces, K’NEX presents the 100 Model Building Set in a hassle-free portable suitcase storage box. You don’t need to worry about where to store small plastic toy parts or getting them lost. Keep all the K’NEX parts in one place that is easy to access. Store all those precious pieces in this handy suitcase storage box that kids will always love to open. Packaging may vary. VERSATILE – This building set includes an instructional booklet, which shows builders how to create 100 unique models with its helpful illustrations. This toy is ideal for boys and girls aged 7+ and up, as they can make anything that their minds can come up with. Foster your kids’ imagination and creativity with K’NEX. See your youngsters build a blimp, ambulance, or even the Eiffel Tower! STEAMagination – It’s the connection of STEAM (science, technology, engineering, arts & math) with a child’s natural curiosity and creativity and it powers the fun of each and every K’NEX building set. Building with K’NEX puts children on a path towards a fundamental understanding of STEAM/STEM subjects. DEVELOPMENTAL BENEFITS – K’NEX supports key areas of a child’s developmental growth. As they click the different parts together and discover how the building system works, they’re strengthening hand-eye coordination, fine motor skills, problem-solving skills, spatial awareness, and exercising their imagination! COMMITMENT TO QUALITY – K’NEX rods and connectors are responsibly made in America at a landfill-free, zero-waste green manufacturing facility in Hatfield, Pennsylvania. We test to the strictest quality and safety standards, ensuring that your child has a successful, trouble-free building experience. PARTS GUARANTEE – Broken part? Missing part? If you find yourself in need of a replacement for any reason, just give us a call! We’ll get you what you need so that your child can get back to building as soon as possible. Packaging may vary. DEVELOPMENTAL BENEFITS – K’NEX supports key areas of a child’s developmental growth. As they click the different parts together and discover how the building system works, they’re strengthening hand-eye coordination, fine motor skills, problem-solving skills, spatial awareness, and exercising their imagination! COMMITMENT TO QUALITY – K’NEX rods and connectors are responsibly made in America at a landfill-free, zero-waste green manufacturing facility in Hatfield, Pennsylvania. We test to the strictest quality and safety standards, ensuring that your child has a successful, trouble-free building experience. PARTS GUARANTEE – Broken part? Missing part? If you find yourself in need of a replacement for any reason, just give us a call! We’ll get you what you need so that your child can get back to building as soon as possible.
  • K'NEX Thrill Rides - 3-in-1 Classic Amusement Park Building Set, Multicolor
    Bestseller #1
    K'NEX Thrill Rides - 3-in-1 Classic Amusement Park Building Set, Multicolor (386)
      Build a classic motorized K'NEX Ferris Wheel Includes 744 durable, colorful plastic classic K'NEX pieces Battery powered motor included Set can be used to build two alternate models: Swing Ride and Boom Ride Recommended for ages 9+
  • KID K’NEX – Budding Builders Building Set – 100 Pieces – Ages 3 and Up – Preschool Educational Toy
    Bestseller #1
    KID K’NEX – Budding Builders Building Set – 100 Pieces – Ages 3 and Up – Preschool Educational Toy (386)
      100 COLORFUL PIECES – The K’NEX Budding Builders Building Set contains 100 large parts with vibrant colors and premium-quality. The package includes K’NEX rods and connectors for builders to create amazing constructions that showcase their creativity! 50 BUILDING IDEAS – This building set will let your children create a wide array of structures, from basic shapes to advanced designs. This set includes 50 building ideas for different skill levels. REUSABLE STORAGE TUB – This building set comes in a plastic tub for convenient storage of built models and loose pieces. Pack the colorful pieces into the container and bring it with you on family trips! INSTRUCTION SHEET INCLUDED – Let your kid enjoy building a variety of models with this building set! It comes with an instruction sheet that shows 50 suggested building models. STEAMagination –   It’s the connection of STEAM (science, technology, engineering, arts & math) with a preschooler’s natural curiosity and creativity and it powers the fun of each and every KID K’NEX building set.  Building with KID K’NEX puts preschoolers on a path towards a fundamental understanding of STEAM/STEM subjects. DEVELOPMENTAL BENEFITS – KID K’NEX supports key areas of a preschooler’s developmental growth.  As they click the different parts together and discover how the building system works, they’re strengthening hand-eye coordination, fine motor skills, problem-solving skills, spatial awareness and exercising their imagination! COMMITMENT TO QUALITY –  KID K’NEX rods and connectors are responsibly made in America at a landfill-free, zero-waste green manufacturing facility in Hatfield, Pennsylvania.  We test to the strictest quality and safety standards, ensuring that your child has a successful, trouble-free building experience.
  • K'nex - Imagine Creation Zone Building Set
    Bestseller #1
    K'nex - Imagine Creation Zone Building Set (313)
      K'NEX BUILDING SETS: Included in each set is a step-by-step manual to help bring your imagination to life! Bringing together Science, Technology, Engineering, Arts, and Maths with imagination, K'NEX provides specially designed toys for every age KIDS CONSTRUCTION TOYS: With this Kid K'NEX craft box for kids which includes 417 classic pieces and 50 building ideas to choose from including a dragon, swing ride, robot and more, any creation is possible! EDUCATIONAL TOY: This engineering set encourages the development of fine motor skills, dexterity, spatial awareness and problem solving using the colour-coded rods and connectors specially designed to snap together AGE & SUITABILITY: Ideal for children aged 5 and up as they enjoy imaginative play while developing an awareness of STEM subjects with these building sets for kids that include hands-on, inquiry-based learning opportunities IDEAL GIFT FOR CHILDREN: With a storage tub to store your half built creations and K'NEX pieces, K'NEX kids building toys allow children to explore their creativity as they learn and develop and are great as a birthday gift or Christmas present for boys and girls
  • K’NEX Beasts Alive – K'NEXosaurus Rex Building Set – 255 Pieces – Ages 7+ Engineering Educational Toy
    Bestseller #1
    K’NEX Beasts Alive – K'NEXosaurus Rex Building Set – 255 Pieces – Ages 7+ Engineering Educational Toy (386)
      MORE THAN 250 PIECES – This building set contains 255 vibrant parts and pieces, all made of plastic with high-quality construction. The package includes iconic rods and connectors that snap easily together into 3-D configurations. Turn a child’s imagination into reality as you build a customizable dinosaur with K’NEX Beasts Alive K'NEXosaurus Rex Building Set. DOWNLOADABLE INSTRUCTIONS – This engineering education toy comes with easy-to-follow instructions to guide children through their building conquests. Unleash your kids’ creativity as they make their own designs for open-ended fun! INCLUDES A BATTERY-POWERED MOTOR – The K’NEX Beasts Alive Building Set comes with a battery-powered motor to operate the dinosaurs. Introduce your kids to the art of building and creating and the enjoyment of seeing their own creations come to life. This toy requires two “AA” batteries and is recommended for ages seven and up. STEAMagination: It’s the connection of STEAM (science, technology, engineering, arts & math) with a child’s natural curiosity and creativity and it powers the fun of each and every K’NEX building set. Building with K’NEX puts children on a path towards a fundamental understanding of STEAM/STEM subjects. DEVELOPMENTAL BENEFITS: K’NEX supports key areas of a child’s developmental growth. As they click the different parts together and discover how the building system works, they’re strengthening hand-eye coordination, fine motor skills, problem-solving skills, spatial awareness and exercising their imagination! COMMITMENT TO QUALITY: K’NEX rods and connectors are responsibly made in America at a landfill-free, zero-waste green manufacturing facility in Hatfield, Pennsylvania. We test to the strictest quality and safety standards, ensuring that your child has a successful, trouble-free building experience.
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