El Gran Jefe

"The Big Boss"

Fat tandem frame with sliding dropouts. 170 or 190mm spacing.

Our premium fat tandem. El Gran Jefe will take you and your best friend from the snowy mountains to the sands of the Sahara and everywhere in between traveling in style.

Price starts at $1,895.


  • Tapered head tube (1-1/8” to 1.5”) uses InSet or Zero Stack headset (44mmx56mm)
  • Optimized for 483mm A-C fork length
  • 27.2mm seat post diameter
  • 100mm Ventana eccentric captain’s BB
  • 100mm English threaded stocker’s BB
  • Removable clamp-style cable stops for front & rear derailleur, and rear brake
  • Ventana proprietary three bolt swinging adjustable dropouts with replaceable derailleur hanger
  • Available in 170mm or190mm rear axle widths
  • Chainstay yoke provides ample clearance for large volume tires (4.8” tires on 100mm rims)
  • Compatible with up to 120mm travel suspension fork
  • Fits 27.5+ and 29+ wheels


  • 177x12mm or 197x12mm thru axle dropouts - includes axle bolt +$150
  • Fatzilla Fat Tandem Fork 150x15mm. Stock color: Carbon black + $550


Current Stock Colors:

Grinch Green

Mango Tango

Custom Upgrades:


Stock Sizes: Small (18/16"), Large (20,17")

Download our frame size chart.

We also offer three levels of custom geometry.


Every frame is backed by our solid warranty and our great customer service.

Our Bikes