Subrosa Railed Mid BMX Seat-Matt Ray-Black Gloves It uses a 19mm chromoly

It uses a 19mm chromoly spindle with 8 splines

Compatible with T1 / new X2 (2017 version) / M1 HT Pedals

Rider Weight Limit: 250 Lbs

103mm Spindle Length

There are some cranks/frame combinations where a 108mm will work

Subrosa Railed Mid BMX Seat-Matt Ray-Black Gloves It uses a 19mm chromolyA reissue on a longtime favorite, the Subrosa Railed Mid Seat Matt Ray Black brings together high density padding under a double stitched, 3 panel vinyl seat cover. The rail system is tucked up under the seat and remains hidden and protect. Available in rail style only. SPECIFICATIONS Railed style only High density padding 3 panels design Double stitched seams High quality vinyl fabric with Kevlar strpes on the top panel