4Pc Sickspeed Spiked Bolt For Engine Bay Dress Up Kit 8X1.25 P4 Black for Dodge Challenger This is a set of 4 chrome&nbsp;Technidize finished&nbsp;spiked bolts Made from weapons grade billet aluminum. Spikes weigh in at 13 grams a piece spikes have a total length of 34mm(1.57") Will fit on any 8x1.25 threaded bolt.