Dinqua's Jetting Calculator

For Carbureted Triumph Bonneville Americas, Americas and Speedmasters (2002-2008/2009, depending on country).

Exhaust System
  • Stock Pipes
  • Debaffled Stock Pipes
  • TORs
  • Bubs
  • D&Ds
  • Epco
  • JC Whitney
  • Sceptre
  • Specialty Spares
  • Staintunes
  • Thunderbike
  • Chevy605s
  • Drag Pipes
  • Misc Open Pipes
Debaffled Pipes
  • 0 Baffles Removed
  • 1 Baffle Removed
  • 2 Baffle Removed
  • All Baffles Removed
Jet Needles
  • Stock
  • TBS
  • Thruxton
  • Dynajet
.5mm Needle Shims Installed
  • None
  • 1 Shim
  • 2 Shims
  • 3 Shims
Dynajet Clip Position
  • Top
  • 1 Up
  • Middle
  • 1 Down
  • Bottom
Pilot Jets
  • 42 (stock)
  • 45
  • 48
Air Filtration
  • Stock Paper
  • Uni Single
  • Dual K&N (Freak)
  • K&N Pods
  • Velocity Stacks
  • None at all
Snorkle Status
  • All In
  • Top Removed
  • All Removed
Airbox Drilled?
  • No
  • Yes
Elevation
  • Sea Level
  • 1000-2000 ft
  • 2000-3000 ft
  • 3000-4000 ft
  • 4000+ ft
Controls
Main Jet Size