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expiredgaamn114 | Staff posted Oct 15, 2024 12:45 PM
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expiredgaamn114 | Staff posted Oct 15, 2024 12:45 PM

649-Piece K'NEX Typhoon Frenzy Roller Coaster Building Set

$30

$54

44% off
Amazon
10 Comments 16,347 Views
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Deal Details
Amazon has 649-Piece K'NEX Typhoon Frenzy Roller Coaster Building Set (51438) on sale for $29.50. Shipping is free with Prime or on $35+ orders.

Walmart has 649-Piece K'NEX Typhoon Frenzy Roller Coaster Building Set (51438) on sale for $29.50. Shipping is free w/ Walmart+ (free 30-day trial) or on orders of $35+.

Thanks to Deal Hunter gaamn114 for finding this deal.

Product Details:
  • With 649 pieces, including rods, connectors, 19-ft of track, motorized power and a silver coaster car, this awesome building set lets you create a cyclone of twisting roller coaster fun in your living room.
  • 2 AA batteries required (batteries not included)
  • Ages 9+

Editor's Notes

Written by SlickDealio
  • About this deal:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion. 
  • Ratings & Reviews:
    • Rated 4.3 out of 5 stars based on over 370 customer reviews.
  • About this store:

Original Post

Written by gaamn114 | Staff
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Amazon has 649-Piece K'NEX Typhoon Frenzy Roller Coaster Building Set (51438) on sale for $29.50. Shipping is free with Prime or on $35+ orders.

Walmart has 649-Piece K'NEX Typhoon Frenzy Roller Coaster Building Set (51438) on sale for $29.50. Shipping is free w/ Walmart+ (free 30-day trial) or on orders of $35+.

Thanks to Deal Hunter gaamn114 for finding this deal.

Product Details:
  • With 649 pieces, including rods, connectors, 19-ft of track, motorized power and a silver coaster car, this awesome building set lets you create a cyclone of twisting roller coaster fun in your living room.
  • 2 AA batteries required (batteries not included)
  • Ages 9+

Editor's Notes

Written by SlickDealio
  • About this deal:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion. 
  • Ratings & Reviews:
    • Rated 4.3 out of 5 stars based on over 370 customer reviews.
  • About this store:

Original Post

Written by gaamn114 | Staff

Community Voting

Deal Score
+23
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Price Intelligence

Model: K'Nex 51438 TYPHOON FRENZY ROLLER COASTER BUILDING SET Building Kit , Gray

Deal History 

Sale Price
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Current Prices

Sort: Lowest to Highest | Last Updated 9/25/2025, 07:13 PM
Sold By Sale Price
Amazon$43.27

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Top Comments

multiuseemail
630 Posts
50 Reputation
Haven't heard of K'NEX in a LONG time; didn't know they were still alive.

9 Comments

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Oct 17, 2024 03:51 AM
111 Posts
Joined Sep 2015
That1PrinceOct 17, 2024 03:51 AM
111 Posts
Thanks! I grabbed one for charity for Christmas!
1
Oct 24, 2024 03:04 PM
630 Posts
Joined Oct 2020
multiuseemailOct 24, 2024 03:04 PM
630 Posts
Haven't heard of K'NEX in a LONG time; didn't know they were still alive.
Oct 24, 2024 04:35 PM
6,927 Posts
Joined Jul 2011
08CivicSiOct 24, 2024 04:35 PM
6,927 Posts
Ordered, 8 year old will love it.
Oct 24, 2024 06:37 PM
1,385 Posts
Joined Jul 2016
AG1802Oct 24, 2024 06:37 PM
1,385 Posts
Quote from multiuseemail :
Haven't heard of K'NEX in a LONG time; didn't know they were still alive.
Same. As a kid I still remember the assembled running demos at Toysrus

Good times😂
Oct 24, 2024 10:32 PM
177 Posts
Joined Feb 2005
NeoHydOct 24, 2024 10:32 PM
177 Posts
Be ready to spend one whole day with your kid building this
Pro
Oct 24, 2024 11:09 PM
532 Posts
Joined Aug 2014
slypher25aussie
Pro
Oct 24, 2024 11:09 PM
532 Posts
I've found the K'NEX of new to not be as good as the K'NEX of old. Pieces don't fit together as well or snap easily. Rollercoasters need a lot of tweaking to get working right.
Oct 25, 2024 12:42 AM
318 Posts
Joined Aug 2018
MreowsersOct 25, 2024 12:42 AM
318 Posts
The name always reminds me of Construx… I'd probably buy those again for my kids.

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Oct 25, 2024 12:54 AM
637 Posts
Joined Sep 2023
RockHardRockCrawlerOct 25, 2024 12:54 AM
637 Posts
Ever since Knex went to mini parts, they went downhill.
Oct 26, 2024 02:55 AM
291 Posts
Joined May 2011
hood_repOct 26, 2024 02:55 AM
291 Posts
this you buy and your kid starts building it but quickly looses interest because it's too complex, then start loosing pieces, pack it up and keep it in the garage, and eventually you throw it in the trash next time you are moving into your new rental house
1

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