Browse the best custom mechanical keyboard kits with premium cases, hot-swap PCBs, and gasket-mount plates. Compare barebones kits from top designers, check real-time pricing across 40+ vendors, and find the perfect foundation for your next custom build.
![[Pre-Order] @40 40% Low Profile Keyboard Kit by Niuniu](https://cdn.shopify.com/s/files/1/1674/0405/files/DSC_1222_1.jpg?v=1749523764&width=3840&quality=75)
![[In Stock] PK x BIOI Command 65 R2 Vintage Custom Mechanical Keyboard Kit](https://cdn.shopify.com/s/files/1/1674/0405/files/561A1328.jpg?v=1737618363&width=3840&quality=75)
![[Group-Buy] Notfromsam S46 R3 - Barebones Keyboard Kit](https://cdn.shopify.com/s/files/1/0064/2560/8282/files/converted_5472x3648_0496e083-0b81-48b7-918b-9b651521a990.jpg?v=1777339940&width=3840&quality=75)
A custom keyboard kit gives you the case, PCB, and plate so you can choose your own switches and keycaps for a fully personalized build. Whether it is your first build or your tenth, compare kits by mount style, material, layout, and price below.
Most kits include a case, a mounting plate, a PCB (usually hot-swap), stabilizers, gaskets or mounting hardware, and a USB-C cable. Switches and keycaps are sold separately so you can pick exactly what you want. Some premium kits also include foam layers, carrying cases, and extra plates in different materials. Always check the product listing for the exact contents before ordering.
Beginner-friendly kits feature hot-swap PCBs so no soldering is required. Brands like Keychron, KBDfans, and QwertyKeys offer well-documented kits with easy assembly. A gasket-mount 65% or 75% kit in the $100-$150 range is the sweet spot for a first build: enough space for daily use, premium typing feel, and a straightforward build process that takes under 30 minutes.
Tray mount screws the PCB directly to the case bottom, creating a firm typing feel. Top mount suspends the plate from the top of the case for a slightly softer experience. Gasket mount uses elastomer strips between the plate and case for the most cushioned, flexible typing feel and is the most popular mount style in modern custom kits. Each has its merits, but gasket mount is the current community favorite.
Aluminum cases are heavy, rigid, and produce a deeper sound profile. Polycarbonate cases are lighter, slightly flexible, and allow RGB to shine through. Acrylic cases offer maximum RGB transparency at a lower price but are more fragile. Your choice affects weight, acoustics, and aesthetics. If sound quality is your priority, aluminum with internal dampening foam is the go-to. For RGB enthusiasts, polycarbonate is ideal.
60% kits are the most compact and have the widest case and keycap compatibility. 65% adds arrow keys for daily productivity. 75% includes a function row for shortcuts and media controls. TKL and full-size kits are available but less common in the custom space. Match the layout to your workflow: gamers lean toward 60-65%, coders prefer 65-75%, and office users often want 75% or TKL.
Budget kits ($50-$120) offer solid builds with plastic or entry-level aluminum cases, hot-swap PCBs, and basic stabilizers. Premium kits ($150-$400+) upgrade to CNC machined aluminum or brass, refined gasket tuning, multi-material plates, and pre-lubed stabilizers. The biggest jump in quality happens between $100 and $200. Beyond $200, diminishing returns set in unless you specifically want exotic materials or limited-run designs.