---
product_id: 503609813
title: "K'Nex 77077 STEM Explorations Roller Coaster Building Set for Ages 8+ Construction Education Toy, 546 Pieces"
price: "R2227"
currency: ZAR
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.za/products/503609813-knex-77077-stem-explorations-roller-coaster-building-set-for-ages
store_origin: ZA
region: South Africa
---

# K'Nex 77077 STEM Explorations Roller Coaster Building Set for Ages 8+ Construction Education Toy, 546 Pieces

**Price:** R2227
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** K'Nex 77077 STEM Explorations Roller Coaster Building Set for Ages 8+ Construction Education Toy, 546 Pieces
- **How much does it cost?** R2227 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/503609813-knex-77077-stem-explorations-roller-coaster-building-set-for-ages)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Full description not available

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    It works with a bit of blu tack added :⁠-⁠)
  

*by A***M on Reviewed in the United Kingdom 🇬🇧 on 27 December 2022*

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     I saw some reviews saying it didn't go round the loop or hook onto the chain itself. We had no problem it going round the loop but it wouldn't hook on the chain without a little nudge. I added a lump of blue tack to the front of the car to make it a bit heavier, problem solved :⁠-⁠). Works a treat now. The blue tack should also help if you're having problems with the loop.

### ⭐ 







  
  
    Broken
  

*by M***E on Reviewed in the United Kingdom 🇬🇧 on 30 December 2022*

The car that come with this set is snapped in half! So the whole set has been a waste of money, my son’s Christmas present we haven’t even been able to set it up and I can’t seem to find the cars sold separately online. I have a very upset son with his kinex set still in the box

### ⭐⭐⭐ 







  
  
    Okay...
  

*by C***N on Reviewed in the United Kingdom 🇬🇧 on 13 November 2017*

Purchased this to go with my other knex roller coasters as it was on offer. Good enough kit but a few issues:1) The chain is fiddly to get working. I followed the instructions to the letter and it was either too lose or too tight and either the chain came off or the car wasn't picked up. Had to move the top cog closer to the top to get it to work2) One small missing part - thankfully I had the same piece in another kit. Could be frustrating if you don't have a spare as it will take time to arrive!3) Whole thing moves - I don't remember this being so bad on my other coasters - Seems to jump around the table far to easily.Also the experiments all just feel tacked on to sell the coaster - if education was the main purposes they could have skipped the chain and motor and just done a cheaper kit.

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**Shop now:** [https://www.desertcart.co.za/products/503609813-knex-77077-stem-explorations-roller-coaster-building-set-for-ages](https://www.desertcart.co.za/products/503609813-knex-77077-stem-explorations-roller-coaster-building-set-for-ages)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-20*