400 SX Jet Kit

400 SX Jet Kit
400 SX Jet Kit
400 SX Jetting Kit Includes

  • 400 SX Main Jets
  • 400 SX Pilot Jet
  • 400 SX Leak Block Jet                  
  • 400 SX Needle Adjusters        
  • 400 SX Nylon Needle Spacers
  • Drill Bits for
  • 400 SX Idle Mixture Modification
  • 400 SX Accel Pump Modification
  • 400 SX Tuning Tech
  • 400 SX Bike Specs
  • Carb Schematic
  • Carb Synchronizer Tool (how to build for $5)
  • Step by step instructions with photos for ease of installation.
  • Installation Support - If you need assistance we are there for you.

Please Select the Following Information

Stage 1-7
Air Filter Type
Exhaust Type
Altitude / Elevation Riding Range
Year, Make, & Exact Model
Other Mods, Brand of Exh/Int

    Please Include any more Information needed to Design your Jet Kit

This is a Custom Designed Performance Jet Kit.
We give a 100% Satisfaction Guarantee Refund on each Kit.
Fill out the information, and Engineering will design the kit per your specifications.