RTB2005C Racetech aluminium clamps for back-mounting seats. Precision cut from a 20mm thick 5083 alloy sheet. Sold as a pair these clamps fix around a rollcage tube and bolt to the seat back mounting bracket. This allows you to effectively back-mount a Racetech 4119 series seat to the chassis/rollcage at the shoulder level. Supplied with 2x M8 bolts and 2x flat washers. Fits 1.5" rollbar.