Big Gun Rev Box KLX 400 (Fits 01-04 Kickstart and electric start models) Adds up to 3 more horsepower once snapped in. Comes ready to install and go. Allows RPM to rev out 1000 RPM higher than stock while advancing the timing for a bit more torque on the bottom end.
This Fits
- 2001 KLX 400
- 2002 KLX 400
- 2003 KLX 400
- 2004 KLX 400