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

4.3 4.3 out of 5 stars 223 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

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K'NEX

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!

Top Brand: K'NEX

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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

User Manual (PDF)

Looking for specific info?

Customer reviews

4.3 out of 5 stars
4.3 out of 5
223 global ratings

Customers say

Customers like the children's content and quality of the marble track set. They say it's a great educational toy and fun to build. However, some customers report issues with durability and missing parts. They also dislike the ease of assembly. Customers also differ on performance.

AI-generated from the text of customer reviews

27 customers mention27 positive0 negative

Customers find the marble track a fun project and a great build for kids. They also say it's an educational toy and challenging but fun. Some customers also mention that it'll be an adventure construction kit for their children.

"...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

"...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

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

15 customers mention15 positive0 negative

Customers are satisfied with the quality of the marble track set. They mention it's a great product, worth the time spent, and a fantastic toy set. 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 mention that 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 it works well and the kids enjoy very much, while others say that it wobbles and does not work properly. The chain lift doesn't work, and the motor is useless.

"...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 falls apart easily, the chain would snap apart, and other pieces popped off and bent. The quality is poor and it requires constant repairs.

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

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

"...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 2 essential pieces. Some customers also say that the product is fun but missing pieces.

"...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 poor 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

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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Top reviews from the United States

ck
5.0 out of 5 stars Enjoyed by the entire family but expect hours of building.
Reviewed in the United States on August 12, 2017
Verified Purchase
This set literally took three hours to build by an adult. I thought it wouldn't take as long if I sorted out all of the pieces first. I think it did save time, but still, three hours is long. I enjoyed building it while listening to a television show, something I rarely get to do these days. The instructions could always be better. I find on the bigger sets there's room for confusion because there's so much you need to do and the pieces are little and somethings just bound to happen. I didn't make as many mistakes, and nothing that wasn't easily fixable. But just as I had it all ready to go I had to assemble the chain. I found this to be the most difficult part. You get more links than you need, and it's difficult to keep up with counting them. In any event, I think I had 107 links on there. It took a bit of adjusting to get the right tension and adjust parts so the chain wouldn't keep snagging. Once I had it all together and made a few changes it worked beautifully! And continues to delight our family. It's not really one of those toys you build and then take apart for a rainy day. It's a large set, so you need space for it. Fortunately we have a free spot where the Christmas tree would go, so we're really enjoying it along with a couple other large K'Nex coaster sets. Together they are all mesmerizing and the entire family loves them. Haven't had any issues. Except if you need to change the batteries you need to take the battery box off. The design of it doesn't allow you to simply remove the batteries and add new ones. That's the only issue.
One person found this helpful
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Bonnie C.
5.0 out of 5 stars Great for 13 year old budding physist
Reviewed in the United States on February 19, 2024
Verified Purchase
My grandson had this pit together in a few hours. He thought it was a great gift. Would recommed this to a teen who is intersted in building, engineering and physics
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FlyJ
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
Verified Purchase
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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FlyJ
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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5 people found this helpful
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The Procrastinator
5.0 out of 5 stars Chain drive may be a bit finicky...
Reviewed in the United States on December 28, 2017
Verified Purchase
Got this when it was a Deal for my kids. Bought this instead of another set (the "Web Weaver") which used a rechargeable car on the track using a lithium battery which requires charging.

Ended up spending Christmas afternoon setting it up. One piece was missing, but it was not a show stopper. The rods and connectors are positioned so that the track follows the path shown in the picture with only a few excess parts.

The motor driven chain pulls the car up to the highest point on the track, releases it and the car then travels around the loop and reattaches to the chain at the base of the tower. This takes about a second or two.

Now, the chain has some play and this may cause parts of it to run on the edges of the chain guide. When this happens the car get stuck and it could result in the chain snapping/breaking. If this happens, you'll have to re-thread it and snap the links together. This gets tiresome after a while.

Chain slippage may also be cause by the surface on which the tower rests not being vertical or parts not firmly put together. The upper and lower sprockets should be in line to have the chain travel correctly. Tightening the chain by removing links caused it to break.

In addition, as the chain guides cannot swivel where they are fixed on the track. At the apex of the tower, this may result in the car getting stuck and the chain snapping. Re-positioning the chain guides and the supports,helped to getting it work more reliably.

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 tower.

In any case, it was a great set at the price, but perhaps I should have got the "Web Weaver"...
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A. Hook
5.0 out of 5 stars Great project for the family
Reviewed in the United States on February 3, 2018
Verified Purchase
This thing is awesome but there is going to be some tweaking. Make sure you start by doing a count of all the pieces. We were missing 2 pieces but I have a six year old that dumped all the stuff into a pile so maybe that's on us. Kinex responded right away and sent out the pieces once we emailed then.

It's good to separate all the pieces into groups and put then into Ziploc bags. Helps so much. Other than that, it's was good for my six yr old to follow directions and works in steps. We used it as a father son project and he loved it.

As far as the tweaking we didn't use one link and disconnected a top support. Seems to make the chain run smoother and more reliably.
One person found this helpful
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Tammy Bosler
5.0 out of 5 stars fun toy with great parts replacement policy.
Reviewed in the United States on January 9, 2017
Verified Purchase
We got this for our 8 year old daughter for Christmas, and she loved it (as did her 6 year old sister). I built most of it because she was tired after having built the Ferris wheel set, but she was able to help. Upon taking it down to pack it for the return trip home, she broke two connector pieces. Thanks to the tip of another parent, I learned that K'Nex will replace broken pieces! I ordered the replacements online in about three minutes, and it was done. 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.
6 people found this helpful
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Rose Henke
3.0 out of 5 stars NOT STURDY
Reviewed in the United States on July 23, 2018
Verified Purchase
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. but other that that it a fun project and a great build. it is also very cool looking and my son said that he was impressed by it besides the leaning problem.
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Bookworm
1.0 out of 5 stars Doesn't work!
Reviewed in the United States on December 29, 2017
Verified Purchase
So disappointed. I bought this for my son for Christmas. He spent over an hour putting it together just to find out the car just gets stuck every other curve/flip. Not worth the money, I'm returning it.
3 people found this helpful
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Top reviews from other countries

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Miguel Salinas de Santiago
5.0 out of 5 stars Excelente
Reviewed in Mexico on January 9, 2018
Verified Purchase
Llego en perfectas condiciones, y es muy divertida . . . . . . . . . . . .
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Laurent R
1.0 out of 5 stars Un gros BOF !
Reviewed in France on August 18, 2018
Verified Purchase
Une galère totale à monter !
Comme forcément vous allez être mis à contribution par vos enfants... Fuyez ce type de jeu... la notice de construction fait 46 pages.... et le rendu, bien qu’impressionant (qui m’a d’ailleurs rendu plein de fierté d’avoir réussi avant que le jeu ne soit définitivement passé par la fenêtre) n’a que peu d’intéret car on s’en lasse vite et il prend bcp de place...
Bref, je ne recommande pas !
4 people found this helpful
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