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Razer RC21-01740100-R3M1 Phantom Black Keycap Set — main product image
Razer RC21-01740100-R3M1 Phantom Black Keycap Set
Razer RC21-01740100-R3M1 Phantom Black Keycap Set
Razer RC21-01740100-R3M1 Phantom Black Keycap Set
Razer RC21-01740100-R3M1 Phantom Black Keycap Set
Razer RC21-01740100-R3M1 Phantom Black Keycap Set
Razer RC21-01740100-R3M1 Phantom Black Keycap Set
Razer

Razer RC21-01740100-R3M1 Phantom Black Keycap Set

★★★★★4.4 (5590 reviews)

Legendless ABS pudding keycaps with bottom-lasered legends that won't wear off and push Chroma RGB diffusion to its visual ceiling.

$39.24*
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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 Set is engineered around a single design priority: maximum Chroma RGB output with a stealth aesthetic when unlit. The pudding construction — opaque blacked-out top, frosted translucent side walls — solves a fundamental limitation of standard keycaps, which block lateral light emission entirely. By allowing RGB to escape through the keycap walls in addition to the legend opening, the Phantoms dramatically increase visible per-key lighting across the board surface. The legendless top is the differentiating choice here — most pudding keycaps retain top legends, but the Phantoms commit to a fully clean surface that reads as a solid black slab in ambient light. Bottom-lasered legends are revealed only by backlight, which keeps the typography sharp and consistent without the wear degradation of surface-applied printing methods.

Material is ABS plastic, which is the expected choice for high-transmittance pudding keycaps — PBT's density and opacity would undercut the lateral glow effect. The trade-off is ABS's known susceptibility to shine development on high-contact keys over months of daily use, which is the most consistent long-term limitation reported by keyboard enthusiasts. The set ships with 128 keycaps covering full-size, TKL, and mini layouts in US and UK configurations, plus a keycap removal tool and stabilizers sized for Razer's switch footprint. MX-stem cross-compatibility means physical fitment on most third-party boards is achievable, though Razer's optical switch row profile means users should verify before committing to non-Razer hardware.

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

Material
ABS (Acrylonitrile Butadiene Styrene)
Color
Classic Black
Keycap Count
128
Legend Style
Bottom-Lasered, Legendless Tops
Side Wall Construction
Frosted Translucent (Pudding)
Layout
US and UK
Compatibility
Razer Mini, TKL, Full-Size Mechanical/Optical; Standard 104/105 key
Included Accessories
Keycap Removal Tool, Stabilizers

Pros & Cons

👍 Pros

  • Bottom-lasered legends eliminate the wear-off issue common with pad-printed or top-lasered ABS keycaps — the legend is protected by the full thickness of the keycap top, with only a thin layer between the legend and the backlight source.
  • The frosted ABS side walls deliver noticeably wider RGB light diffusion than standard keycaps, allowing Chroma per-key lighting to bleed laterally and create a more immersive underglow effect across the board surface.
  • The blacked-out, legendless top surface gives the keyboard a genuinely distinctive stealth aesthetic that holds up in daylight without looking unfinished — something most pudding designs fail to achieve.
  • The 128-keycap count covers full-size, TKL, and mini layouts in both US and UK variants, eliminating the common frustration of layout gaps in aftermarket keycap sets.
  • The included keycap removal tool and stabilizers mean no additional accessories are needed to complete the swap.

👎 Cons

  • ABS plastic will develop a shiny, worn surface on high-contact keys — spacebar, WASD, and modifiers — faster than PBT alternatives, typically becoming noticeable within several months of daily use.
  • The legendless top design is a hard commitment to RGB-on aesthetics — if you regularly use your keyboard with lighting off, key identification relies entirely on touch typing or memory.
  • The frosted side walls, while excellent for RGB diffusion, do not improve sound profile — ABS pudding keycaps retain the higher-pitched, thinner sound characteristic of ABS over the deeper thock of thick PBT.
  • Compatibility is confirmed for Razer's own keyboards and standard MX layouts — users with non-standard bottom rows or boutique switch designs should verify stem and row compatibility before purchasing.

Frequently Asked Questions

A pudding keycap has a translucent lower section on the sides of the keycap body — the top is opaque (in this case, blacked out with no legend), and the frosted walls allow RGB light from the switches to emit sideways and downward. Standard keycaps have fully opaque walls that block side lighting entirely, concentrating glow only through the legend opening.
Correct. The Phantom keycap tops are fully blacked out with no visible legends when the RGB is off, giving the board a completely clean, minimal look in ambient light. The legends are lasered onto the underside of the keycap, so they only become visible when backlit — a deliberate design choice for stealth aesthetics.
Yes, these are ABS plastic, which is more prone to developing a worn, shiny surface from finger oils and friction than PBT keycaps. The tradeoff is that ABS transmits RGB light more vividly due to its thinner walls and higher light transmittance — which is why pudding keycap designs typically use ABS rather than PBT.
Yes, the set includes 128 keycaps covering Razer Mini, TKL, and full-sized 104/105 key US and UK layouts. The count exceeds 104 to include modifier variants and layout alternates. A keycap removal tool and stabilizers are also included.
Razer states compatibility with their own mechanical and optical keyboards and standard 104/105 key layouts. The keycaps use a standard cross-shaped (MX-style) stem mount, so they will physically fit most MX-compatible third-party switches. However, Razer's optical switch stem profile is slightly different — for non-Razer boards, verify switch compatibility before purchasing.

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