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Razer RC21-01740200-R3M1 Phantom Keycap Upgrade Set - White — main product image
Razer RC21-01740200-R3M1 Phantom Keycap Upgrade Set - White
Razer RC21-01740200-R3M1 Phantom Keycap Upgrade Set - White
Razer RC21-01740200-R3M1 Phantom Keycap Upgrade Set - White
Razer RC21-01740200-R3M1 Phantom Keycap Upgrade Set - White
Razer RC21-01740200-R3M1 Phantom Keycap Upgrade Set - White
Razer RC21-01740200-R3M1 Phantom Keycap Upgrade Set - White
Razer

Razer RC21-01740200-R3M1 Phantom Keycap Upgrade Set - White

★★★★★4.4 (5583 reviews)

Razer's Phantom keycaps blend stealth aesthetics with translucent sides that let your RGB lighting shine through beautifully.

$33.26*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Razer Phantom Keycap Upgrade Set in Mercury White offers a distinctive way to refresh the look of your Razer mechanical or optical keyboard. The set's defining feature is its stealth design: each keycap has translucent side walls and bottom-lasered legends, creating a dual personality. With RGB lighting off, the keys appear clean and nearly blank for a minimalist aesthetic. Turn Chroma lighting on, and the translucent edges glow while the legends illuminate from beneath, producing a vivid underglow effect that standard opaque keycaps simply cannot replicate.

With 128 keycaps in the box, the set accommodates US and UK layouts across mini, tenkeyless, and full-sized Razer keyboards, so you can swap every visible key regardless of your board's size. Installation is straightforward — pull the old caps off and press the new ones on. The keycaps are made from ABS plastic, which is smooth and consistent but may develop a polished sheen with heavy use over months. For users who want to dramatically change the visual character of their Razer setup without replacing the keyboard itself, the Phantom set is a focused, well-executed cosmetic upgrade.

Key Features

Unique Stealth Design: As the first ever pudding keycaps to feature blacked-out, legendless tops, they give your keyboard an incredibly sleek and clean feel when its RGB is off—a must-have look for truly minimalist setups

Translucent Sides: Designed to let more light through, the frosted walls on these ABS pudding keycaps bring out the full brilliance of Razer Chroma RGB in every direction

Bottom-Lasered Legends: Unlike regular keycaps which are lasered from the top, this method ensures legends that won’t wear off and shine brighter thanks to a thinner layer between the keycap and light source

Keycap Removal Tool & Stabilizers: Specifically designed for Razer keycaps and switches, the set includes all the tools and parts you need to conveniently upgrade our optical and mechanical keyboards

Universal Compatibility: The set works with all our Mini, Tenkeyless (TKL), and full-sized mechanical/optical keyboards, and consists of 128 keycaps that fit with Razer and standard 104/105 key US and UK layouts

Specifications

Brand
Razer
Model
RC21-01740200-R3M1
Design
Stealth Design with Translucent Sides
Material
ABS
Legends
Bottom-Lasered
Keycap Count
128
Layouts
US and UK
Compatibility
Mini, TKL, Full-Sized Mechanical/Optical Keyboards
Color
Mercury White

Pros & Cons

👍 Pros

  • 128-keycap set covers US and UK layouts across mini, TKL, and full-sized boards
  • Translucent side walls create a striking underglow effect with Chroma RGB lighting
  • Stealth bottom-lasered legends give a clean, minimalist look when lighting is off
  • Drop-in replacement that requires no software or firmware changes

👎 Cons

  • ABS material is more prone to developing a shiny, worn finish over time compared to PBT
  • Designed primarily for Razer keyboards and may not fit third-party boards with non-standard layouts
  • Bottom-lasered legends can be difficult to read in well-lit rooms without RGB turned on
  • Purely cosmetic upgrade with no change to typing feel or switch performance

Frequently Asked Questions

The set includes 128 keycaps, covering US and UK layouts for mini, tenkeyless, and full-sized keyboards.
They are compatible with Razer mechanical and optical keyboards in mini, tenkeyless, and full-sized form factors that use standard keycap stems.
The keycaps are made from durable ABS plastic with bottom-lasered legends and translucent sides for the lighting effect.
The legends are lasered onto the bottom portion of each keycap and the sides are translucent, so when RGB lighting is off the keys appear nearly blank and minimal, but when lighting is on the legends and edges glow vividly.
A keycap puller is recommended for removal and installation. Razer includes one with most of their keyboards, or they can be purchased inexpensively.

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