JGRMX Suzuki Cylinder Head Assembly


$ 2,299.99 

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The JGRMX ported cylinder head assembly is derived from the professional race team and assembled by the team’s engine technicians. Ported using CNC milling creates the exact performance specifications that top racers demand. The head was developed over six months of rigorous testing through dyno and on-track research. A JGRMX race-spec camshaft kit is included, as well as the OEM/stock valve train and cam gears to improve durability and ease maintenance.

We recommend the use of a GET RX1 PRO ECU and JGRMX high-compression piston with our cylinder head assembly for best results.

  • CNC ported cylinder head
  • Developed by the JGRMX race team
  • Fully assembled by JGRMX engine techs and ready to install
  • JGRMX race camshaft kit is included
  • Uses stock valve train and cam gears (valve springs are appropriately shimmed [450] or exchanged for proper valve control [250])
  • JGR logo engraved on side of head
  • Includes head gasket, base gasket & NGK spark plug
  • Hinson clutch springs are suggested
  • Requires the use of VP Racing T4 fuel
  • Available for the 2019-'20 RM-Z250 and 2018-'20 RM-Z450