6shifter

So I have been getting an intermitant THUNK from my right rear somewhere. I have BMR Sway bar, control arms, panhard bar and torque arm. It usually happens on acelleration after I use my E-brake. Do you think it might be my E-brake hanging up on something? I just had the suspension done about 1000 miles ago, along with new rotors (Baer Eratispeed's). I checked underneath for any damaged suspension stuff, but did not find.

Thanks