Had the Zstartpro on 2 Huskies & loved them. Ordered one for my 2007 DRZ400E, did not research it & when it came it was the EXP. Totally different design. Took a $200loss never installed & sold it. Weak design & looks like nothing but a hassle over the long haul. Adjusted using the clutch lever & needs checking every ride. Installed the Z Star Pro on my Huskies & never had to adjust in over 14,000 miles. Removed my clutch lever, was never needed. The EZP is nothing but a clutch pack replacement the replaces a few of your stock plates & expands with motor RPM's. Not a great bullet proof design as the previous design in my humble opinion?