Sixshot's teeth find the crook of Tarn's unbitten shoulder and his tenuous hold on self control snaps. Energon drips, sharp and warm on his tongue, and all his higher processing power leaves him, mind blanking out, world narrowing down to Tarn and nothing but Tarn.

He heaves, thrusts beginning to lose rhythm beyond just being harder, deeper, faster, frame singing with pent up power from their desperate coupling. It lasts all of three more, strut rattling slams and then-

A long, pitched whine escapes the Sixer's vocalizer, the sound almost lost under the deafening clap of static snapping between their frames, the scream of his powerplant as it rattles the entire building on its foundations from the vibrations. His cord surges inside of Tarn, pulsing even more transfluid into his lover's overstretched valve until it spills out from around the Sixer's heavy, thick knot.