316-435-3837 mike@stolcreek.com

Big Bore Kit – 1417cc TURBO

EdgePerformance billet big bore cylinders for Rotax 9 series engines.


  • 043-T6 billet alloy
  • 8.5:1 CR
  • Dyno proven at 160HP. Normal output on a 914 is 135HP
  • Comes with custom under cut EP forged pistons with teflon coated skirts and ceramic coated piston crowns
  • Use 91+OCT fuel or greater
  • Billet machined cylinders, not casted. Greater density and heat transfer
  • Media blasted finish for better heat dispatchment and increased surfase area
  • Not sleeved like other kits
  • Nikasil plated cylinders, will last forever. Same technology as OEM uses as well as all MC mfg.’s
  • Reports of 15c° lower CHT’s
  • Piston weight 318gr vs 465gr standard
  • CP custom forged race pistons. Lightweight and weight matched to +/- 1gram Nikasil cylinders allow for tighter cylinder/piston clearance