JoyFX Custom Pedals (also operating as JoyFX Custom Shop) is a small boutique builder of handmade guitar effects based in Limeira, São Paulo, Brazil. The shop focuses on overdrive and distortion circuits, including both original designs and faithful clones of well-known dirt pedals, along with the occasional compressor.

The catalog spans models such as the Killer (in V2 and V3 revisions), the 1981 and 1981 Mini, the Próton dual overdrive, the Morning G., the Daytone Overdrive, the Dude, the Atlas Comp compressor, and a LoveTones series that combines multiple circuits in a single enclosure. Pedals are assembled in low volumes and sold direct through the JoyFX webstore and on Reverb, with a reputation among Brazilian players for hand-built, point-to-point style construction at prices below the imported boutique market.

JoyFX has 3 products cataloged on Equipboard, including Overdrive Effects Pedals and Compressor Effects Pedals.