A pair of Solid Titanium Grade 5 hinge pins, ground to perfect fit for the HPI Baja Rear upper suspension pivots/ rear shock tower support mount. These are the hinge pins for the inner part of the upper arm. These are completely captured so there are no clips necessary.

The Rear bumper brace also slots over these pins to tie it into the back of the car, so Titaniums excellent sheer strength comes in handy!