Suzuki DR-Z400SM (2013)

They worked great, really opened up the bikes top end and she pulled all the way to red line.  I highly recommend installing aftermarket valves, my stock ones failed and destroyed my engine.

Still waiting on parts before i can run this.

+1mm Oversized Valves installed in head, still waiting on more parts to test.

+1mm Oversized valves installed, still waiting on more before i can test.

Still waiting to test these, waiting on Cylinder and new piston.

Definitely a huge improvement to the DRZ, I'm 6'3" and 240Ibs.  This really improved my confidence in the corners knowing i wouldn't bottom out my suspension.

Perfect for my height and weight, allows me to not feel like I'm killing the bike when I sit on it.