Dean Duke full suspension model

[2013 NAHBS] Dean Titanium Bicycles – Duke, Di2 Hardtail, and Exogrid Rigid

John Siegrist - Dean Titanium Bicycles
John Siegrist – Dean Titanium Bicycles

photos by: Jake Moore

Dean Titanium Bicycles is based out of Boulder, Colorado. They focus primarily on making titanium frames for road, mountain, and other bicycling disciplines. John Siegrist is the head of the operation performing all of the welding himself. We got a chance to meet up with John at the 2013 North American Bicycle Show to find out some more information about Dean and check out some of their mountain bikes on display.

Interview with John Siegrist – Dean Cycles

What type of mountain bikes to you typically build for your customers?

“We mainly build cross country mountain bikes.”

Dean Duke full suspension model
Duke titanium full suspension model
Rohloff belt drive detail
Rohloff belt drive detail
rear sliding drop out detail
rear sliding drop out detail

What type of material do you most often use for construction?

“We do build some steel but mostly titanium frames. We use all USA made tubing, USA made fitings. Typically 3/2.5 titanium. The frames are built using a two pass welding process. First the “root” weld is made and then a finishing cap pass is made with 6/4 titanium rod.”

shock allows for about 2" of rear travel
shock allows for about 2″ of rear travel
the suspension pivots at the bottom bracket which allows the use of belt drive very easily
the suspension pivots at the bottom bracket which allows the use of belt drive very easily

Do you have stock geometry or are most frames custom?

“For mountain bikes we are are 50/50 stock sizing vs custom.”

headtube detail
headtube detail
Dean titanium seatpost
Dean titanium seatpost
Dean titanium stem and titanium handlebar
Dean titanium stem and titanium handlebar

Do you do wet paint or powdercoat?

“If we do paint  we use Powdercoat – Spectrum Powderworks.”

rigid Exogrid mountain bike
rigid Exogrid mountain bike
sick looking Exogrid rigid fork
sick looking Exogrid rigid fork
Exogrid titanium/carbon tubing
Exogrid titanium/carbon tubing

How did you get started building bikes?

“I came to Colorado in 1981 to race. Worked with Bill Stevenson. Got into bike building through him. After got out of CU started building bikes and grew from there.”

headtube badge detail
headtube badge detail
one piece Dean titanium handlebar stem combo
one piece Dean titanium handlebar stem combo
cockpit detail
cockpit detail

First sweet childhood bike?

“My first race bike built by Bill Stevenson.”

rear sliding dropout detail
rear sliding dropout detail
belt drive detail
belt drive detail

Favorite trail?

“Winter Park singletrack”

Dean titanium hardtail with Di2 drivetrain
Dean titanium hardtail with Di2 drivetrain
Dean titanium handlebar and stem
Dean titanium handlebar and stem

SRAM or Shimano?

“Back and forth between the two.”

Shimano Di2 shifter
Shimano Di2 shifter
Di2 rear derailleur internal routing exit
Di2 rear derailleur internal routing exit
internal routing exit for Di2 front derailleur
internal routing exit for Di2 front derailleur

Burrito or taco?

“Burrito.”

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