K'nex STEM Explorations Roller Coaster 744476770783
K'nex STEM Explorations Roller Coaster 744476770783

Knex STEM Explorations Roller Coaster

Basic Fun

Collect from a local DPD Parcelshop— FREE when you spend £30+

We’re a small, family-run business — just me (Callum) and my sister, carefully packing every order by hand.

With a toddler keeping us on our toes and baby Theodore arriving on 14th July, life is a little hectic — but we’re truly grateful for your support.

Why buy from Lennie’s if dispatch takes 2–3 working days?

Because when you shop with us, you’re not just buying a toy — you’re supporting a UK family business that puts genuine care and love into every single parcel. 💛

When we ship, we use a Next Day service (1–2 working days), so most orders arrive within 3–5 working days from the time you place your order.

If everything in your basket has our SpeedyLlama badge, we’ll do our best to dispatch the same day — though we can’t guarantee it every time.

We might not be the fastest, but we’re honest, reliable, and always here to help if anything goes wrong — with free, no-fuss returns too.

Thanks for choosing heart over haste. 🧸✨

Price:
£27.99 £40.99

Experience the thrill of building and engineering with the Knex STEM Explorations Roller Coaster! Perfect for curious minds and budding engineers, this exciting construction set invites children, parents, and gift buyers to engage in hands-on play that combines fun with education. Designed to inspire creativity and problem-solving skills, this roller coaster kit is a fantastic addition to any toy collection, making it an ideal gift for birthdays or special occasions.

  • Age Suitability: Recommended for ages 7 and up, making it perfect for both young builders and seasoned creators.
  • Fun Factor: Create a thrilling roller coaster experience with loops, twists, and turns that will keep kids entertained for hours.
  • Interactivity: Watch as your roller coaster comes to life with marbles that race along the track, delivering a satisfying visual and auditory experience.
  • Collectability: The Knex STEM Explorations Roller Coaster is part of a series that encourages further exploration and collection of additional sets.
  • Key Components: Comes with a variety of classic K'NEX rods and connectors, as well as a roller coaster track, providing endless building possibilities.
  • Build Quality: Made from durable plastic materials that ensure long-lasting constructions and withstand repeated play.
  • Educational Value: Encourages STEM learning through physics principles involved in roller coaster dynamics, making it a great educational tool.
  • Display Value: Once built, the roller coaster serves as an impressive display piece in any room, showcasing engineering skills.

Character or Brand Spotlight: K'NEX has been a leader in the construction toy market for over 25 years, fostered by a mission to inspire creativity through play. The Knex STEM Explorations Roller Coaster embodies this legacy, combining education with entertainment in a way that captivates both children and parents alike.

Design & Materials: This engaging set features bright, vibrant colours that are visually captivating. Each piece is crafted from high-quality, non-toxic plastic, ensuring safety during play. The build is sturdy, allowing for an exciting construction process that culminates in a visually stunning roller coaster. It’s part of a series that showcases various engineering concepts, encouraging further exploration of STEM themes.

How to Play: The building process involves assembling the track and supports, allowing for creative freedom in the design. Once construction is complete, users can send marbles racing down the tracks, providing an interactive experience that enhances understanding of physics and motion. This set accommodates solo play or group activities, making it a fantastic option for playdates or family fun.

Collect & Display: The Knex STEM Explorations Roller Coaster is a fantastic addition to any playroom or shelf. Its intricate design not only showcases your engineering skills but also makes for an eye-catching display. Pair it with other K'NEX sets to expand your collection and create massive roller coaster systems or unique constructions. Its collectability makes it a sought-after item among K'NEX enthusiasts.

Packaging Info: The product comes in a sturdy window box that allows for easy viewing of the contents. This set includes detailed assembly instructions and is packaged with care to protect all components. Collectors will appreciate the authenticity marks that reinforce the quality of the K'NEX brand.

Care & Tips: To maintain the quality of your roller coaster, store it in a cool, dry place away from direct sunlight. Use a soft cloth for cleaning, and ensure that small pieces are stored safely to avoid loss. When displaying, consider protective cases to keep dust at bay, enhancing the longevity of your creation.

Please note: If this is a multipack or assorted item, you may not receive the exact product shown in the image. These items are updated frequently, and while we do our best to keep listings current, variations in character, colour, or style may occur. Rest assured, you will receive the correct product – just with potential differences in design.

We’re a small, family-run business and sometimes use AI to help with our listings. If anything looks off or you need more info, just give us a shout — we’re always happy to help!
This item is brand new and 100% genuine. We buy only from official brands or authorised UK distributors, so you can shop with confidence.

We’re a family-owned online toy shop, founded by Callum and Adelle during the pandemic. What started as a small idea has grown far beyond our expectations — in 2022, we welcomed our son Charlie into the world, and in July 2025, we were delighted to welcome baby Theo into our growing family. At Lennie’s Toys, everyone who works here is family, meaning every order is packed with genuine care and a commitment to excellent service.

We’re proud to have over 1,000 happy customers on Trustpilot — you can read more about our story on our About Us page.

Enjoy Free UK DPD Local Collect on orders over £30!

Enjoy Free UK Tracked Shipping on orders over £50!

Dispatch Information

At checkout, you’ll see one of two options:

  • Same-Day Dispatch – Available on eligible items ordered before 3pm Monday–Friday (excluding bank holidays). Orders placed after 3pm will be dispatched the next working day. Orders placed after 3pm on Friday will be dispatched on Monday.

Standard Dispatch (up to 3 working days) – If your item shows a 3 working day dispatch time, this is accurate. We use external storage facilities to keep prices competitive, which can mean a short delay, but rest assured your order will be sent within the timeframe shown at checkout.

 

Delivery Options & Costs

 

  • Home Delivery – Free when you spend £50+, otherwise £4.95. (Sent via Royal Mail Tracked 24 or DPD Next Day.)

  • DPD Local Collect – Free when you spend £30+, otherwise £3.95.

 

Additional Details

  • We only use tracked services for your peace of mind.

  • Carriers include Royal Mail, DPD and Parcelforce

  • DPD deliveries are not available to islands or Northern Ireland. In Scotland, DPD is only available for addresses within and south of the Central Belt.

  • International shipping is available.

All orders will receive an email notification once shipped.

Click here to read our delivery policy.

Free UK Returns within 30 days

As a small family-run toy shop, we kindly ask for your understanding regarding our return policy. Abusing it by ordering toys solely to reach the free shipping threshold, only to return them later, can significantly impact our business. While we are always here to assist with genuine returns, we appreciate your consideration of how such actions can affect us. Thank you for your support and understanding.

Click here to read our returns policy.

Frequently Asked Questions

How long will my order take to arrive in the UK?

Look for our SpeedyLlama badge on product pages. If every item in your basket carries that badge and you order before 3 pm Monday–Friday (excluding bank holidays), we’ll dispatch your package the same day. If any product is not SpeedyLlama-eligible, we’ll dispatch within approximately three working days.

How long will my order take to arrive outside the UK?

We dispatch international orders within one working day, Monday–Friday (excluding bank holidays). Delivery typically takes 5–14 working days, but customs or peak-season delays can extend this to around 30 days.

Can I change or cancel my order after payment?

We prepare and ship orders very quickly. If you need to amend or cancel, please email info@lenniestoys.com immediately. We can’t promise changes once your order is dispatched, but we’ll do our best to help.

I’ve received the wrong item or something’s damaged—what should I do?

We’re very sorry! Email info@lenniestoys.com with a description and photos if possible. We’ll arrange a replacement or refund as quickly as we can.

How do I return an item?

Email info@lenniestoys.com to let us know which items you’d like to return and why. If the item is damaged, please mention this. We’ll send you a prepaid returns label and process your refund or exchange once we receive the toy.

Where is my refund?

Refunds through Shopify Payments can take up to 10 working days to appear in your account, though often they arrive sooner. PayPal refunds to your balance are usually instant.

I didn’t receive an order confirmation—what now?

It’s usually a typo in the email address. Email info@lenniestoys.com and we’ll correct your address and resend the confirmation immediately.

I encountered a payment error but the funds left my account—will I get my money back?

Your payment sits in escrow until Shopify confirms the sale. If the order didn’t go through, your bank will reverse it automatically. Contact your bank if you need a faster reversal.

Can I request a VAT invoice?

Yes—you can now download your VAT invoice directly from the order confirmation email or your account’s VAT receipt section. Simply click the “Download VAT Invoice” link, and it will be generated instantly for your records. If you need any help, email info@lenniestoys.com.

Will my collector’s items arrive in perfect condition?

Every item is inspected on arrival and again before packing. If anything arrives damaged or incorrect, email callum@lenniestoys.com and he’ll make it right.

Are all your toys authentic and genuine?

Absolutely. We source only from UK-based, brand-authorised distributors, so every product at Lennie’s Toys is guaranteed 100% genuine.

You may also like

Recently viewed