steel than it does out of name-brand aluminum we do it not because we dislike ... aluminum but because we strongly believe in ... of beefiness instigator specifications tubing 100 surly 4130 cro-moly steel main ... bottom bracket shell 73mm wide threaded english 1.37x24t chainring clearance 48t max ...
the last time you saw a spring made of aluminum takes a lot of crap and doesn t cost ... cross-check specifications tubing 100 surly proprietary 4130 cro-moly ... tubing tig-welded double-butted main triangle ... bottom bracket 68mm wide standard english threaded 1.37x24t tire clearance ...