K'NEX Parts & Accessories

Premium replacement parts and upgrade kits for your favorite K'NEX builds. Built by fans, for fans.

K'NEX Parts & Accessories

Premium replacement parts and upgrade kits for your favorite K'NEX builds. Built by fans, for fans.

K'NEX Parts & Accessories

Premium replacement parts and upgrade kits for your favorite K'NEX builds. Built by fans, for fans.

1139 results
1139 results
Motors & Electronic Components

Metallic Blue Sound Unit

$4.07 /ea In Stock

Metallic Blue Sound Unit

In Stock $4.07
Motors & Electronic Components

Gray Sound Unit

$4.25 /ea In Stock

Gray Sound Unit

In Stock $4.25
Join Waitlist We generally have more stock on hand than our website shows. So stock could be updated quickly! We try to restock at least once a week if possible depending on part supplies.