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