Sepeda Lipat (Folding Bicycles): Dahon, Brompton, Birdy (riese-mueller), dll.
upgrade drive train gan: crankset jadiin dual atau triple chainring, sprocket jadiin 8 atau 9, rd upgrade yg support 8/9sp (prefer yg short spy gak mentok ke tanah & pastikan max T-nya sdh cover cog depan belakang) , fd jg support 2/3 chainring, shifter 8/9 x 2/3 pake part road bike pasti ajibbbb...