Professional equipment specifications can change. Data below was checked against the linked manufacturer source on 2026-07-25. ComparePilot does not provide medical or infection-treatment advice.
Tattoo Machines
FK Irons EXO 4.0
FK Irons EXO is a modular 9-watt brushless tattoo machine available with a 4.0 mm stroke, a 40 mm ergonomic grip, and a detachable RCA module that can be swapped for compatible PowerBolt wireless power.
$599.99
Verified Jul 26 · FK IronsStroke: 4.0 mm fixed variantMotor: 9-watt brushless
Best for: Artists who want a front-weighted modular machine that can operate wired by RCA or convert to wireless PowerBolt use
Versatility93
Ergonomics89
Power95
Modularity98
Value88
Advantages
Pros
- Wired-or-wireless modular power architecture
- 9-watt brushless motor and front-weighted 40 mm grip
- 4.0 mm option is well suited to power lining and color packing workflows
Tradeoffs
Cons
- PowerBolt wireless hardware changes the total purchase cost
- Large grip and forward weighting will not suit every hand preference
- Fixed stroke once a specific EXO variant is selected
Machine and workflow snapshot
Key specifications
Stroke
4.0 mm fixed variant
Motor
9-watt brushless
Grip
40 mm ergonomic, front-weighted
Power
Detachable RCA module; PowerBolt wireless conversion supported
Controls
Depends on wired power supply or connected battery module