MNWebSource

07/11/2026

https://www.ebay.com/itm/204142187665

Tested, from the most trusted supplier of used and new OEM NOS K'nex parts, shipping worldwide!

Trusted bySTEM educators, roller coaster enthusiasts, and master builders worldwide. Perfect forcars, racers, STEM builds, kinetic demonstrations, and custom vehicle projects. Each motor istested to ensure strong pull‑back tension and smooth gear operation.

07/06/2026

https://www.ebay.com/itm/206398733307

Find many great new & used options and get the best deals for 1 Micro K’NEX Black Rubber Car Coupler Link – USED OEM at the best online prices at eBay! Free shipping for many products!

06/29/2026

https://www.ebay.com/str/mnwebsource/Construx/_i.html?store_cat=38356081014

We’ve expanded our inventory of authentic 1980s Fisher‑Price Construx parts on our eBay store. Every beam, nut, panel, and action piece is OEM, hand‑sorted, and ready for restorations, custom builds, and set completion. If you grew up with Construx or collect vintage STEM systems, this is the place to find the parts you’ve been searching for.

MNWebSource is your trusted source — with over 60% repeat customers — for clean, hand‑sorted authentic OEM parts, both USED and NEW old stock. Every item is genuine and never 3D‑printed. Based in Minnesota, we ship fast (often same‑day) and pack with care. We specialize in rare and hard‑...

06/29/2026

https://www.ebay.com/str/mnwebsource/Lincoln-Logs/_i.html?store_cat=42237573014

We’ve expanded our Lincoln Logs inventory on eBay with a wide variety of authentic OEM logs and accessories. Every piece is hand‑sorted, cleaned, and inspected to ensure quality. Whether you’re restoring a classic set, completing a cabin build, or adding accessories, we’ve got the parts families and collectors trust.

MNWebSource is your trusted source — with over 60% repeat customers — for clean, hand‑sorted authentic OEM parts, both USED and NEW old stock. Every item is genuine and never 3D‑printed. Based in Minnesota, we ship fast (often same‑day) and pack with care. We specialize in rare and hard‑...

06/29/2026

https://www.ebay.com/str/mnwebsource/KNEX/_i.html?store_cat=25913967014

We’ve added a fresh wave of authentic OEM K’NEX parts to our eBay store — rods, connectors, motors, track, Flexi rods, and more. Everything is hand‑sorted, inspected, and professionally packaged for builders, educators, and collectors. Whether you’re restoring a classic set or expanding a new build, we’ve got the parts you need.

MNWebSource is your trusted source — with over 60% repeat customers — for clean, hand‑sorted authentic OEM parts, both USED and NEW old stock. Every item is genuine and never 3D‑printed. Based in Minnesota, we ship fast (often same‑day) and pack with care. We specialize in rare and hard‑...

06/29/2026

https://www.ebay.com/str/mnwebsource/Erector-Set-Parts/_i.html?store_cat=39883495014

We’ve added a new wave of Modern Meccano metal parts and components to our eBay store, including pieces from several retired Special Edition sets from the early 2000s. All parts are authentic OEM, hand‑sorted, and ready for restorations, upgrades, and engineering builds. If you collect Meccano or rebuild vintage sets, this is the place to find the pieces you’ve been hunting for.

MNWebSource is your trusted source — with over 60% repeat customers — for clean, hand‑sorted authentic OEM parts, both USED and NEW old stock. Every item is genuine and never 3D‑printed. Based in Minnesota, we ship fast (often same‑day) and pack with care. We specialize in rare and hard‑...

06/16/2026

Micro builders — big update tonight!
We just finished listing a huge batch of Micro K’NEX track, including several hard‑to‑find colors and shapes. Straight, curved, 180° turns, glow‑in‑the‑dark, rare purples and dark blues — all hand‑sorted OEM pieces ready for your next build.

Whether you're restoring a classic Micro coaster, expanding a layout, or stocking up for future projects, we’ve got fresh inventory across the board. We’re working hard to keep these SKUs in stock even as sourcing gets tougher, and we appreciate this community more than ever.

If you’ve been waiting for Micro track… tonight’s the night.
Thanks for building with us — we ship worldwide and love seeing what you create.

– The MNWebSource Family

https://www.ebay.com/sch/i.html?_dkr=1&iconV2Request=true&_blrs=recall_filtering&_ssn=mnwebsource&store_cat=0&store_name=mnwebsource&_oac=1&_nkw=micro%20track

06/15/2026

https://www.ebay.com/itm/206347643623

Find many great new & used options and get the best deals for (24) K’NEX Gears – Large & Medium Crown, Spur, Locking, Specialty – USED OEM at the best online prices at eBay! Free shipping for many products!

06/08/2026

https://www.ebay.com/itm/206332199680

Been sourcing K"NEX since 2018, and this is a 1st for us!!!!

Find many great new & used options and get the best deals for K’NEX Large Green Dual‑Tooth Chainring Gear – USED OEM – Ultra Rare at the best online prices at eBay! Free shipping for many products!

06/01/2026

https://www.ebay.com/itm/206312880102?itmmeta=01KT0B76WJDZQ8K3C12SFD23A5&hash=item300934b7e6:g:xlAAAeSwZYRqHM6v

Rare to find new anymore! All perfectly the same color!

All rods fit theStandard K’NEX building system (classic rods and connectors). You will receive(50) Light Gray 7‑1/2" (7.50") Long Rods as shown in the title. Perfect forlarge structures, long spans, towers, bridges, and engineering builds.