Ventana El Gran Jefe Fat Bike Tandem Frame




We’ve been waiting for this one for a long time! Finally, Ventana has created their version of the Phat tandem – the El Gran Jefe (The Big Boss). This frame is designed to accomdoate 26x 4.0″ tires on 80mm rims, with a tapered (44/56mm) head tube. Standard rear dropout spacing is 170mm. Optional rear dropouts include 177x12mm and 190mm. Available in 2 frame sizes:

Frame Size Captain ST Stoker ST Captain TT Stoker TT HT Captain S/O Stoker S/o HT Angle Captain ST angle Stoker ST angle
Small (18/16) 18 16 23.5 29 5.13 31.04 27.39 70.3 70.8 71.8
Large (20/17) 20 17 24.5 29 5.5 31.04 27.39 70.3 70.8 71.8

All Sizes:

Captain BB height: 13.57″

Stoker BB  height: 12.48″

Chainstay Length: 17.26″ to 18.33″

Optimal fork length: 483mm

Optimal fork offset: 51mm

Additional information

Weight 24 lbs
Dimensions 69 × 24 × 9 in


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