--- product_id: 86989818 title: "Tunnel." brand: "ravensburger" price: "249 zł" currency: PLN in_stock: true reviews_count: 13 category: "Ravensburger" url: https://www.desertcart.pl/products/86989818-tunnel store_origin: PL region: Poland --- # 8-piece tunnel expansion set STEM learning through physics No assembly required, ready to play Tunnel. **Brand:** ravensburger **Price:** 249 zł **Availability:** ✅ In Stock ## Summary > 🎯 Elevate your marble run game—where creativity meets science! ## Quick Answers - **What is this?** Tunnel. by ravensburger - **How much does it cost?** 249 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/86989818-tunnel) ## Best For - ravensburger enthusiasts ## Why This Product - Trusted ravensburger brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Master Physics in Play:** Engage with Bernoulli rails and vertical U-turns to explore real-world science - • **Instant Fun, Zero Hassle:** No assembly needed—just snap in and start racing - • **Designed for Ages 8 to 99:** Perfect for lifelong learners and creative minds alike - • **Expand Your GraviTrax Universe:** Add 8 dynamic tunnel pieces for endless track creativity - • **Trusted Quality with 2-Year Guarantee:** Ravensburger reliability ensures hours of worry-free play ## Overview The Ravensburger GraviTrax Tunnel Expansion Set (27614) is a vibrant, 8-piece add-on designed to enhance the interactive marble track system. Suitable for ages 8 and up, it features curved and straight tunnels, vertical U-turns, and specialized Bernoulli rails to deepen STEM learning through hands-on physics experimentation. With no assembly required and backed by a 2-year warranty, this medium-sized set offers seamless integration and endless creative possibilities for both kids and adults. ## Description Ravensburger GraviTrax, tunnel toy, multi-coloured, 27614 : desertcart.co.uk: Outlet Review: Keep them happy for hours - A really great way of encouraging your young ones to work our patterns and design and my grandson loves it and it keeps him off the Nintendo for a while! Review: Good bargain, all in German for some reasons but cheap - For £6.71 it's a decent set, gravitrax is normally much more pricey. It is all in German, for reasons (unknown) ## Features - Expansion set, autumn 2018. - Extension set for the GraviTrax interactive ball track system. - Ages 8 years and over. - 4 tunnels curved, 2 tunnels straight, 2 tunnel points, 2 vertical U-turns, 2 Bernulli plastic rails, 2 O-plastic rails, 2 baskets. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07BLY2CW5 | | Age Range Description | 8 Jahre to 99 Jahre | | Best Sellers Rank | 126,254 in Toys & Games ( See Top 100 in Toys & Games ) 3,565 in Toy Building Sets | | Brand Name | Ravensburger | | Colour | Colourful | | Country Of Origin | Czech Republic | | Customer Reviews | 4.6 4.6 out of 5 stars (3,235) | | Educational Objective | Develop understanding of physics principles through creative construction and experimentation | | Global Trade Identification Number | 04005556276141 | | Included Components | Instructions (D, F, I, EN, NL, E), 4 tunnel curves, 2 tunnel straights, 2 tunnel switches. 2 vertical U-turns, 2 Bernulli plastic rails, 2 O-plastic rails, 2 catch baskets | | Is Assembly Required | No | | Item Dimensions | 33.8 x 33.8 x 5.5 centimetres | | Item Type Name | Marble Run Expansion Tunnel | | Item Weight | 650 Grams | | Manufacturer | Ravensburger Spielverlag | | Manufacturer Part Number | 27614 | | Manufacturer Warranty Description | 2 Year Guarantee | | Material Type | Plastic | | Maximum Age Recommendation | 1188 | | Minimum Age Recommendation | 96.0 | | Model Number | 27614 | | Number of Players | Ab 1 Spieler | | Operation Mode | Manual | | Set Name | GraviTrax | | Size | Medium, Small | | Sub Brand | GraviTrax | | Supported Battery Types | No batteries required | | Theme | Train | | Unit Count | 1.0 Count | ## Images ![Tunnel. - Image 1](https://m.media-amazon.com/images/I/61B2PUi1vqL.jpg) ## Questions & Answers **Q: gravitrax tunnel toy. seems to be a german version. Is this ok to add to gravitrax starter kit?** A: I gave this to my grandsons to add to their gravitrax set and it worked fine. I think there are English instructions inside the box. They had no problems with it anyway. **Q: I have the expansion looping, what starter set do I need** A: Get the base set. We gave nearly all of it now it’s brilliant ## Customer Reviews ### ⭐⭐⭐⭐⭐ Keep them happy for hours *by S***. on 2 January 2019* A really great way of encouraging your young ones to work our patterns and design and my grandson loves it and it keeps him off the Nintendo for a while! ### ⭐⭐⭐⭐⭐ Good bargain, all in German for some reasons but cheap *by Q***E on 26 August 2025* For £6.71 it's a decent set, gravitrax is normally much more pricey. It is all in German, for reasons (unknown) ### ⭐⭐⭐⭐⭐ Great addition *by L***. on 18 May 2019* My son loves this addition to his Gravitrax set. Works well with the other add ons, too. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/86989818-tunnel](https://www.desertcart.pl/products/86989818-tunnel) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-11*