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K'NEX Thrill Rides – Electric Inferno Roller Coaster Building Set – 639 Pieces – For Ages 9+ Engineering Education Toy

4.2 4.2 out of 5 stars 222 ratings

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Purchase options and add-ons

Brand K'NEX
Material Plastic
Age Range (Description) Kid
Item Dimensions LxWxH 16 x 2.5 x 14 inches
Educational Objective Team Building Skills

About this item

  • ENDLESS BUILDING POSSIBILITIES – Let your children experience limitless building possibilities with this unique building system from K’NEX! The Electric Inferno Roller Coaster Building Set comes with 639 different parts and pieces, including a motor and chain lift with a coaster car, which can be clicked together in an assembly of 3D configurations.
  • REAL MOVING PARTS – Unlike other building toys, K’NEX allows your kids to create big models that actually move! Kids can create interactive toys using the classic pieces of this set, making different variations of motorized, moving roller coasters that stand up to 2.7 feet tall.
  • CONVENIENT STORAGE – This activity will definitely keep your children occupied for hours! Storing all the pieces of this set will never be a hassle! All pieces can be put away in the large plastic tub for ease of access and storage. Packaging may vary.
  • EASY TO USE – Easy-to-follow, step-by-step building instructions are included with the whole package of the K’NEX Thrill Rides Electric Inferno Roller Coaster Building Set. Unleash your kids’ creativity as they make their own designs for open-ended fun! This building set is recommended for kids ages 9 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.
  • THRILL OF THE BUILD: K’NEX Thrill Rides allows each child to build bigger models that move to create an amusement park right in their home! Using the included parts and pieces, each K’NEX Thrill Rides building set you can build a massive roller coaster, a majestic spinning Ferris Wheel and more – the heart pounding fun is only limited by your imagination.
  • DEVELOPMENT 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!
  • 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.

Product information

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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K'NEX Thrill Rides – Electric Inferno Roller Coaster Building Set – 639 Pieces – For Ages 9+ Engineering Education Toy


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Product Description

Let your children explore endless building possibilities with this unique building system from K’NEX! The K’NEX Thrill Rides Electric Inferno Roller Coaster Building Set comes with 639 parts and pieces, including a motor and chain lift with a coaster car. All of the pieces can be clicked together to create a variety of 3D configurations. With the Electric Inferno Building Set, kids can create a motorized, moving roller coaster that stands up to 2.7 feet tall

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. All pieces can be put away in the large plastic tub for ease of access and storage.

Easy-to-follow, step-by-step building instructions are included with the package of the K’NEX Thrill Rides Electric Inferno Roller Coaster Building Set. Unleash your kids’ creativity as they make their own designs for open-ended fun! This building set is recommended for children ages 9 and up.

Help your kids develop a better understanding of STEAM (science, technology, engineering, arts, and math) with this building toy. As they click the parts together and discover how the building system works, they strengthen their hand-eye coordination, fine motor and problem-solving skills, and spatial awareness. K’NEX rods and connectors are responsibly made in America at a landfill-free, zero-waste green manufacturing facility in Hatfield, Pennsylvania. The strictest quality and safety standards are used in testing this building system to ensure that your child has a successful, trouble-free building experience.

For a toy that is not only fun but educational, choose the K’NEX Electric Inferno Roller Coaster Building Set!


From the manufacturer

K'NEX Thrill Rides

Electric Inferno Roller Coaster Building Set.

Feel a Shocking Thrill.

With the Electric Inferno Roller Coaster Building Set, from K'NEX.

About this K'NEX Thrill Ride:

K'NEX Parts and Pieces

This set includes 639 parts and pieces including, K'NEX rods, connectors, coaster track, a silver coaster car and a motor!

Classic Motorized Chain Lift

A fan favorite, the classic motorized chain lift pulls the silver coaster up the steep hill over 2.7 feet tall, then sends it flying through more than 14 feet of track!

Additional Model: Mega Monsoon

The Electric Inferno Roller Coaster Building Set also includes instructions for an additional, second model, Mega Monsoon.

Product guides and documents

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Customer reviews

4.2 out of 5 stars
4.2 out of 5
222 global ratings

Customers say

Customers like the content of the marble track set. They say it's a fun project and educational toy. They also appreciate the quality of the product, saying it'll be worth the time spent. However, some customers have reported issues with durability and missing parts. They mention that the kit was not very detailed and that some parts did not align well. Customers also are disappointed with ease of assembly. Customers differ on performance.

AI-generated from the text of customer reviews

27 customers mention27 positive0 negative

Customers find the children's content of the marble track great, interesting, and challenging to put together. They also say it's a great educational toy and a good project for the family.

"...Together they are all mesmerizing and the entire family loves them. Haven't had any issues...." Read more

"...Still, loads of fun and beats an iPad any day of the week!!! Piece unnecessary is marked with an X on page 21 in picture." Read more

"...but other that that it a fun project and a great build...." Read more

"...So, not only was the product fun for the kids, it was a relief knowing that if we need parts in the future, it is a simple process." Read more

15 customers mention15 positive0 negative

Customers are satisfied with the quality of the marble track set. They mention it's a great toy set, worth the time spent, and a fantastic toy. Some say that the rollercoaster turned out amazing. Overall, most are happy with their purchase and recommend it to others.

"...In any case, it was a great set at the price, but perhaps I should have got the "Web Weaver"..." Read more

"This thing is awesome but there is going to be some tweaking. Make sure you start by doing a count of all the pieces...." Read more

"This is a good investment for little curious minds. The instructions to build what is represent on the box are very good...." Read more

"...Very positive experience." Read more

7 customers mention7 positive0 negative

Customers like the appearance of the marble track. They say it looks cool and is pretty neat.

"...it is also very cool looking and my son said that he was impressed by it besides the leaning problem." Read more

"This thing is actually pretty cool. Unfortunately now that it's built my daughter won't take it apart and it's just sitting there...." Read more

"...Adults did most of it and still had sore fingers. Looked nice after assembly." Read more

"It was awfully hard to assemble and it looked so cool, but it is very time consuming so you better have a few hours to spare it was so hard to build..." Read more

19 customers mention8 positive11 negative

Customers are mixed about the performance of the marble track. Some mention that it works well and the kids enjoy very much, while others say that it wobbles and doesn't work properly.

"...Once the final product was completed however, it did not work as advertised because the chain connecting to the motor and the gears was..." Read more

"...Once I had it all together and made a few changes it worked beautifully! And continues to delight our family...." Read more

"A nice and complex build kit. The problem is it doesn't work. I can play with it because I know how to fix it every time it is turned on...." Read more

"...Seems to make the chain run smoother and more reliably." Read more

16 customers mention0 positive16 negative

Customers are dissatisfied with the durability of the marble track. They mention that it simply falls apart as soon as they try to pick it up. The chain would snap apart completely, and the pieces popped off and/or bent. The quality is poor and required constant repairs.

"...of the tower, this may result in the car getting stuck and the chain snapping...." Read more

"I thought that this knex was not as sturdy as some of the others my son built. it was kind of leaning a little too much that is what my son said...." Read more

"...Upon taking it down to pack it for the return trip home, she broke two connector pieces...." Read more

"...Not worth the money, I'm returning it." Read more

13 customers mention0 positive13 negative

Customers are dissatisfied with the missing parts in the marble track. They mention that some parts do not align well, and the kit was missing two essential pieces. Some customers also say that the product is fun, but they need to contact the company to send missing parts.

"...Perhaps these problems with the chain and guides were caused by the missing part which was part of the track support close to the apex of the..." Read more

"...There was a missing piece so we had to place an order for just that piece so he can finish it." Read more

"Directions are not very detailed, couple of missing pieces and some parts do not align well but overall is ok...." Read more

"...son loved his roller coaster however when we went to build it one piece was missing. The one blue long brace stick was not in the package...." Read more

12 customers mention2 positive10 negative

Customers find the marble track difficult to assemble. They say the instructions are difficult to follow and the product is too complicated for children under 13.

"...The instructions could always be better...." Read more

"my boys enjoyed watching me put it together.. its too complicated for children under 13, its also large and takes up alot of space so we were unable..." Read more

"Directions are not very detailed, couple of missing pieces and some parts do not align well but overall is ok...." Read more

"I only gave it a 4 star because it took 2 hours to put together. Other than that it works great!" Read more

4 customers mention0 positive4 negative

Customers are dissatisfied with the length of the marble track. They mention that the tower has a tendency to lean a little and be wobbly.

"...it was kind of leaning a little too much that is what my son said. but other that that it a fun project and a great build...." Read more

"...The track itself seems fine except that it consistently leans. It is just too tall...." Read more

"Easy to put together but the tower had a tendency to lean a little causing the chain to snag now and then." Read more

"...child spent a lot of time putting it together only to have it be really wobbly and not work properly" Read more

This was a super fun project to build with my daughter
4 Stars
This was a super fun project to build with my daughter
This was a super fun project to build with my daughter! It took a couple days but, worth it! There is one area that pictured 3 wide washer beads when it really only needed 2. We thought we dropped it and the dog ate it so we went on a manhunt for alternatives around the house and found 4 washers only to realize it was a misprint. We used 3 less pieces of the black cart track used as the machenism to make it pull up to the top of the coaster. Still, loads of fun and beats an iPad any day of the week!!! Piece unnecessary is marked with an X on page 21 in picture.
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Reviewed in the United States on August 12, 2017
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Reviewed in the United States on January 12, 2018
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4.0 out of 5 stars This was a super fun project to build with my daughter
Reviewed in the United States on January 12, 2018
This was a super fun project to build with my daughter! It took a couple days but, worth it! There is one area that pictured 3 wide washer beads when it really only needed 2. We thought we dropped it and the dog ate it so we went on a manhunt for alternatives around the house and found 4 washers only to realize it was a misprint. We used 3 less pieces of the black cart track used as the machenism to make it pull up to the top of the coaster. Still, loads of fun and beats an iPad any day of the week!!! Piece unnecessary is marked with an X on page 21 in picture.
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Reviewed in the United States on December 28, 2017
Reviewed in the United States on February 3, 2018
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Reviewed in the United States on July 23, 2018
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Miguel Salinas de Santiago
5.0 out of 5 stars Excelente
Reviewed in Mexico on January 9, 2018
Laurent R
1.0 out of 5 stars Un gros BOF !
Reviewed in France on August 18, 2018
4 people found this helpful
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