Jack Kilcoyne

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Pig Benis
Birth name Jack Kilcoyne
Also known as Pig Benis
Born (1969-05-30) May 30, 1969 (age 45)
Lakewood, Ohio, USA
Genres Alternative metal, Industrial metal
Instruments Bass
Years active 1990s–present
Labels Eclipse, Universal, Megaforce
Associated acts Mushroomhead, (216), Ritual
Website www.mushroomhead.com

Pig Benis (born Jack Kilcoyne, May 30, 1969 in Lakewood, Ohio) is an American musician, best known for his 17-year tenure with Cleveland, Ohio alternative metal band Mushroomhead. He joined the band in 1995, replacing his brother Joe Kilcoyne aka Mr. Murdernickel, and parted ways in 2012.


Kilcoyne also plays bass for the Cleveland based band (216), which features other past and present members of Mushroomhead. He also played bass in another Cleveland based metal band called Ritual, though little information is known of the band.




  • Squier HM-5
  • Dean edge 1-5
  • Conklin Groove 5-string
  • ESP LTD EC-404
  • Dean Cadillac's x3
  • Ibanez Vag-tastic 25C*


  • Ampeg SVT-5PRO
  • Gallien Krueger 1001RB (Backup)
  • Ampeg 8x10 Cabinet


  • Tech21 SansAmp PSA 1.1 Preamp


SIT Powerwound 45-125