About John Henry | Photos
Features include size specific double-butted tubing, packing in as much value as we can with our proprietary mix. Our 5 size range includes the elusive “tweener” size; Medium-Large.
Other Standard Handbuilt features include:
• US-made Paragon sliding dropouts- the undisputed best in the business.
You can lay tracks with derailleurs, or hammer on one gear. John Henry
comes with a derailleur hanger.
• Disc brake torque brace enhances braking power and boosts frame
integrity in a high stress area.
• S -bend stays and a 73mm bb shell accommodate the fattest tires
you can find, even in the “short” setting on the sliders.
• Tucked away brake line routing protects your fancy brakes in case
of a crash.
• Frame weights are competitive with other high end steel frames,
coming in a full 1/4 lb lower than the leading steel production 29er
• John Henry is true to Siren roots with a bent, premium quality
top tube. Despite the added expense, we still believe in maintaining good
standover clearance & enhanced ride quality.
Standard, no charge options include 5 decal color choices,
and 5 standard sizes.
Like any other Siren, we can do full custom work with your John
Henry. Custom options include tubing changes, finish, custom
geometry & fit, rack mounts, extra water bottle mounts, Rohloff provisions,
etc. Contact
us directly to get your hammer swingin'
"It'll do anything you tell it to."



