If your Lenz frame has a tapered head tube, your head tube has an upper inside diameter of 44mm and a lower inside diameter of 49mm. The headset specs should be as follows Upper Cup – ZS44/28.6 Lower Cup – EC49/40 We love Wolf Tooth and Cane Creek Headsets. If you go with a Chris

All Lenz Sport frames are 100% handmade-to-order. Quality of craftsmanship and riding performance is the number one focus at Lenz Sport, We take pride  in the quality of every single frame we make, and we never cut corners to speed up the process. Frames are built to order, but we often have the frame you

Current model Lenz Behemoth, Mammoth, and Lunchbox frames with the 16.5″ chain stay length work best with a Sram, Praxis, or Raceface crank with a 26-30t ZERO offset chainring.

(applies to model year 2019 and later) The Mammoth can be converted from 110mm rear travel to 140mm rear travel by ordering replacement control arms (rocker arms) The Behemoth can be reduced from 140mm travel to 110mm rear travel by ordering replacement rocker arms. The Lunchbox and Sesh cannot be converted to a different rear

The Behemoth, Mammoth, and Lunchbox are designed for tires ranging from 2.4″ to 3.0″. Any tires in that range work great. You can order any of these bikes as a 27.5 or 29er or a mullet (27.5 rear and 29 front) The Fatillac is a little more complicated. With a 27.5x50mm wide rim, the max

No. You can use anything from 2.4″ to 3.0″ on our “plus” bikes. We love plus tires, and they make a lot of sense for the trails we have here on the front range and western slope of colorado. That doesn’t mean they are the best thing for every person in every situation. Our bikes