Strictly designed to be lower than stock seat. Seatrail are made integrated with the sub-frame. Can be fitted on most reclining seat such asξ Recaro SR3 to SR11, LX series, Ergomed & Orthopaedic ( except of Sportster and Style ) Sparco R600, R100, R333, Expedition, F200, Sprint, Sprint Sky,Pro 2000, Omp Style, Design 2,Strada, Rallye, TRS Legend, TRS-E, TRS-E Plus, TRS-E XS, XL Bride Stradia, Gias, Cuga, ( Requires Minor Modifications ) , S Chasis and Skyline Direct Fit And Most China Made Seat. Mount-on Only. Easy to Install. Made of 4mm Steel Metal and Double-Locking Mechanism. Made by ISO 9001 certified manufacturer. DL-N118R , DL-N118L Nissan 180SX/S13/S14/S15 NISSAN GTR 32 R33 R34 - These rails are designed to fit Bride Seats ONLY Please note these rails can fit XL Seats such as bride however Modifications is required.