Z4 2004-2006 2.5ltr


2004 – 2006 2.5 litre 6 cylinder (M54) Bmw Z4 (with electric power steering)


Developed and manufactured in house by Bullet Cars utilising the C30-84 Rotrex Supercharger, this kit will transform your standard Z4 into an M3 beating machine! The power delivery from the Rotrex Supercharger is extremely smooth and feels like a factory installation. With a stealth installation and virtually silent operation, this kit will suit the owner who is looking for a discreet performance upgrade.


  • Incredibly Stealth Installation with virtually silent operation
  • Designed to suit an internally standard factory engine
  • 55% power increase with minimal boost pressure
  • Retains factory Air filter box for Cold Air Induction
  • Does not require fuel pump or injector upgrades

Parts Included

  • Rotrex C30-84 Supercharger @ 7psi
  • Rotrex Self contained Oiling system with Oil cooler
  • Bullet Supercharger CNC machined Mounting bracket with idler pulley setup
  • Bullet 6 Rib drive belt
  • Bullet Air to Air Intercooler
  • Bullet Aluminium Intercooler and Intake piping with silicon hoses and hose clamps
  • Bullet Auxiliary boost injector with mounting system
  • Bullet recirculating bypass valve
  • All high quality Fasteners and hoses required for Installation

Please note: This kit must be fitted in conjunction with an engine management solution






1-2 Days


  • XEDE piggyback ECU with 2 bar map sensor, dual map capability and base map
  • Custom dyno tuning
  • JBT Brake Upgrade

Dyno Sheet

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