What We Do

We build custom bike frames out of Potsdam, Germany, and also offer a frame building course where you can learn how to build your own frame.

Frame Builder

Big Forest Frameworks offers custom handmade frames from the highest quality steel Reynolds and Columbus has to offer.

Teacher

Dreaming of building your own frame? I can show you how. Sign up for one of our frame building courses and I can help your dreams to become reality.

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Racer XL3

The latest road machine from Big Forest Frameworks

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The beautiful green custom lugged Racer XL3 road bike from Big Forest Frameworks is ready to pound the pavement! This bike was a long time in the making… 7 months ago I posted a Youtube video about how I made the custom lugs for this bike. Check out the video to get an appreciation for the work I put into this machine to make it what it is. Finally it is finished, and it turned out nicer than I could have imagined.

What can I say about it… I love the lugs and the new paint on this frame. I came up with the graphics and painted the bike myself. The graphics on the top and down tube really do a nice job to accentuate the lug detail that make this frame special. I changed the font for Big Forest Frameworks to give this bike the feel of being fast and I think it works really well.

I also wanted to highlight that this bike is made by hand in where I live (Potsdam) so you see this on the seat tube and chain stays. The head badge also got a refreshed look here. I have been cutting them all by hand up until now, which I think is really special. I also felt that a bit cleaner look would look great on road frames, so this one is CNC lasered out of brushed brass sheet. Looks great, I think, and so does the Big Forest Frameworks tree on the tube.

This frame also sports a lugged bottom bracket shell, although you don’t see this lug at first glance it is a really nice touch. The fork is carbon, which I painted to match the frame. I like how the red accents on the fi’zi:k seat tie in with the paint. The high profile carbon rims from Citec (made in Germany) give the Racer XL3 frameset the speedy look it deserves.

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2015 Complete Racer XL3 Price List

Campagnolo EPS und Shimano Groupsets bitte auf Anfrage. Substitutions auf anfrage.

Campagnolo Super Record

7949

  • Reynolds 853 Tubeset
  • Super Record Groupset
  • Ritchey WCS Carbon Gabel
  • Syntace Racelite Carbon CDR Lenker
  • Styntace Force Vorbau
  • tune Carbon Stütze
  • Chris King NoThreadSet
  • Tune AX Lightness Laufradsatz
  • Continental Grand Prix 4000 Tubular

Campagnolo Chorus Groupset

5200

  • Reynolds 853 Tubeset
  • Chorus Groupset
  • Ritchey WCS Carbon Gabel
  • Ritchey Superlogic Evo Lenker
  • Hope Road Vorbau
  • Thomson Masterpiece Stütze
  • Chris King NoThreadSet
  • tune TSR 27 Laufradsatz
  • Continental Grand Prix 4000 S II Reifen

Campagnolo Athena Carbon

4350

  • Reynolds 853 Tubeset
  • Athena Carbon Groupset
  • Ritchey Comp Carbon Gabel
  • Ritchey Pro Carbon Lenker
  • Hope Road Vorbau
  • Thomson Elite Stütze
  • Chris King NoThreadSet
  • Hope Mono RS + NoTubes ZTR Alpha 400 Laufradsatz
  • Continental Grand Prix 4000 S II Reifen

Campagnolo Veloce Groupset

2990

  • Reynolds 631 Tubeset
  • Veloce Groupset
  • Ritchey Comp Carbon Gabel
  • Ritchey Aluminum Lenker
  • FSA OS-190 Vorbau
  • FSA Gossamer
  • FSA Orbit UF
  • Campagnolo Khamsin Laufradsatz
  • Continental Grand Prix

2015 Frame Only Price List

Komplette Fahrräder fangen normalerweise bei ungefähr 2500€ an. Ruf mich an oder schicke eine E-mail, damit wir über Dein Traumrad reden können. Dann kann ich ein Preisangebot machen. Unten siehst Du die Preise für unsere Rahmen ohne Zubehör.

Full Custom Lugged

1900

  • MTB, Road, Trekking, Fatbike, Singlespeed, CX
  • Beautiful One of a Kind Lugged frames available only from Big Forest Frameworks
  • Handmade lugs - watch this video to see how I make them - have your own idea for finishing the lugs? Talk to me about it!
  • Reynolds 853 or Columbus Life Tubeset - Reduced wall thickness through heat treatment results in a lighter, stronger frame
  • Inkluding Rocker, Low Mount Disc, Sliding Dropouts von Paragon Machine Works
  • Custom Geometry to fit your body and riding style - go faster and be more comfortable on those long rides
  • Example Road with optional painted to match carbon fork
  • Example MTB with optional matching stem/handlebar and lugged steel fork
  • Choose your frames serial number and never forget your PIN again!
  • Tired of black or white? Custom colors available for road frames, choose your favorite RAL color for MTB frames!

853 Fillet Brazed

$1300

  • MTB, Road, Trekking, Fatbike, Singlespeed, CX
  • Fillet brazed frames have seamless transitions between tubes - simple, elegant, beautiful
  • Fillet brazing is one of the strongest methods of joining tubes, the seamless joints reduce stresses and increases longevity
  • Reynolds 853 or Columbus Life Tubeset - Reduced wall thickness through heat treatment results in a lighter, stronger frame
  • Inklusive Rocker/Low Mount Disc/Sliding Ausfallenden von Paragon Machine Works
  • Custom Geometry to fit your body and riding style - go faster and be more comfortable on those long rides
  • Example MTB with Rocker dropouts
  • Example Fixed/Singlespeedwith optional lugged fork
  • Example Road with optional carbon fork
  • Choose your frames serial number and never forget your PIN again!
  • Tired of black or white? Choose your favorite RAL color!

Classic Lugged Frame

1100

  • Rennrad, Singlespeed, Fixed, Trekking, CX
  • Your Choice of Lugs - Long Point, Arrowhead, Fleur de Lys - from simple & refined, to fancy and embellished
  • Reynolds 631 or Columbus Zona Tubeset - a great choice if you prefer the softer and more forgiving ride steel is famous for
  • Stainless steel lugs and tubeset available as upgrade
  • Example Singlespeed/Fixie with optional matching lugged fork
  • Custom Geometry to fit your body and riding style - go faster and be more comfortable on those long rides
  • Choose your frames serial number and never forget your PIN again!
  • Tired of black or white? Choose your favorite RAL color!

631 Fillet Brazed Frame

950

  • MTB, Road, Trekking, Fatbike, Singlespeed, CX
  • Fillet brazing is one of the strongest methods of joining tubes, the seamless joints reduce stresses and increases longevity
  • Reynolds 631 or Columbus Zona Tubeset - a great choice if you prefer the softer and more forgiving ride steel is famous for
  • Reynolds 853 or Columbus Life available as upgrade
  • Rocker/Low Mount Disc/Sliding Ausfallenden von Paragon Machine Works available as an upgrade
  • Custom Geometry to fit your body and riding style - go faster and be more comfortable on those long rides
  • Example MTB with Rocker dropouts and 142×12 thru axle
  • Choose your frames serial number and never forget your PIN again!
  • Tired of black or white? Choose your favorite RAL color!

How To Order

Your Custom Frame From Big Forest Frameworks

1. Send me an e-mail info@bigforestframeworks.com or call me on the phone, +49 (0) 159 015 32779. If you call and I am not there, please leave a message and I will get back to you as soon as possible. If you live in Potsdam or Berlin or aren’t too far away ask me to set up an appointment so you can come by the shop and check out first hand what I’m up to. I can also measure you personally to fit your frame. Please feel free to visit me even if you haven’t decided to purchase a frame from me. I enjoy showing people my shop and would love to have you visit me!

2. Tell me about your dream bike! Some people have a very specific idea of what they want. In that case the more you can tell me the better. On the other hand some people really like what I do but don’t have a very specific vision of what their custom frame should look like. I love it when people love what I do and let me be relatively free with the build.

3. Measure your body using my fit kit and send me the results. You’ll need a friend, a book, and a pencil. Measure twice to be sure the numbers are ok!

4. In a few days I will get back to you with the first suggestion for your frame geometry. We might go back and forth a couple of times with this, or you might be happy and we can move on to the next step. Once we are both happy, 50% of the frame cost is due before I can get started.

5. Current wait time for a frame is 2-3 months from the time I receive the deposit. If you like I can send you pics of the build process as it goes along, some people print these poster size and have them framed! Once the frame is done, the balance on the bill is due, and I prep the frame for shipping. If you live in Germany you’ll have it in a couple of days! If you order a complete bike, the balance is due 4 weeks before the expected ship date so that I have time to stock the parts before the frame is finished. Many of the boutique brands you see on my bikes are imported directly from the manufacturer in the USA and shipping takes a minimum of two weeks and occasionally up to four.

Frame Building Course

Build Your Own Frame

Build your dream bike yourself! We work together one on one to build your dream bike. We start with your ideas, the small details that you always wanted to have on your frame. We measure your body and your current bike to fine tune the geometry so that your new frame finally fits the way you want it to, and choose the tube set to give your frame the ride qualities that you choose. After a bit of practice with mitering tubes and brazing them together we can get to work. With every miter and each time you take the torch in your hand you’ll see the frame you’ve been dreaming about slowly become a reality. I can honestly tell you that it is a great experience to ride the frame that you built with your own hands for the first time!

A few words about my frame building courses… I generally recommend to first build a lugged frame (Lugged Fixie, Road, or Trekking Bike, see below). Building a frame with lugs is easier, goes much faster than without lugs, and brazing lugs is much easier than without lugs (fillet brazing). But, you can also build a lugless frame as your first frame, it just takes more time (I offer two courses, Mountain Bike or Road Bike). If you have the time and money, I recommend the Master Frame Building Course, in which we first build a lugged frame, and then a lugless frame in 10 days. This is really a great introduction into frame building, especially if you think you might continue building frames after the course is over!

Frame Building Course Pricing

Here are three of our most popular frame building courses and how they compare. There are many more below if you don't see what you are looking for!

Master Course

2325

  • Learn the two basic types of frame construction
  • Learn how to braze a classic lugged road frame
  • Learn how to fillet braze a frame without lugs
  • We start with the easier lugged frame
  • With your first frame finished you have much more experience already, and will enjoy building the fillet brazed frame more than if you had started with it
  • 10 Days
  • Classic Lugged Frame (Road, CX, Singlespeed)
  • Fillet Brazed Frame (Any type)
  • 1 Lugged Fork
  • 1 Unicrown Fork
  • Price does not include material costs
  • Price assumes you book the course with another person

Lugless Mountain Bike

1150

  • Lugless MTB Frame
  • Lugless construction allows you to build any type of frame you want
  • Filled Brazed
  • Lugged dropouts recommended
  • 5 Days
  • Price does not include material costs
  • Price assumes you book the course with another person

Lugged Road Frame

725

  • Road/Singlespeed/Trekkng
  • Best course for beginners
  • Lugged frame construction goes faster than without
  • Because it goes faster, it is more fun because you see the results in less time
  • 3 Days
  • Price does not include material costs
  • Price assumes you book the course with another person

All Courses

Multi Week/Multi Frame, Single Frame, Fork, and Partial Courses

Multi Week Frame Building Courses

Master Course Dream Ride Lugged Mountain Bike - We build three frames together over three weeks. I recommend to first build a lugged frame, then a normal filled brazed frame, and finally the third frame will be custom lugged mountain bike, with lugs that you will fillet braze yourself. Lugged mountain bikes are really something special, and you will be very happy when yours is finished! Check one out here. 15 days, 1:1 3500 Euro, 2:1 2700 Euro + material cost

Master Frame Building Course - We build two frames together over 10 Days. I recommend to first build a lugged frame, and then a normal fillet brazed frame (any kind). This is a really great course for people that are interested in continuing to build frames on their own after the course is over. You will be much more confident and faster when you start the second fillet brazed frame than if it was your first frame. By building two frames what you learn will with stay with you longer through repetition, than if you only build a single frame. 10 Tage, 1:1 2325 Euro, 2:1 1775 Euro + material cost

Fork and Partial Frame Building Courses

Rigid Fork Frame Building Course - Build a rigid fork to fit your frame! Though this course is meant to be combined with one of my other course, it is also a great introduction to frame building. You could book this course, spend a day with me building your fork, and by the end of it you'll know if you would like to continue with your frame. 1 day, 1:1 225 Euro, 2:1 175 Euro, not including material costs.

Fast Track Frame Building Course: We build the front triangle of your frame in 2 days, I finish the frame alone. 1025 Euro + Material Cost

Two Hour Frame Building Course: Stop by the workshop, cut your first tubes, give fillet brazing a test drive. It will definitely be fun and you'll have a better idea if a one week course is right for you. 30 Euro

Single Frame Building Courses

Custom Lugged Mountain Bike Frame Building Course - You can't buy lugs four a mountain bike, so lugged mountain bikes are really something special. As a beginner, you can however build your own lugged mountain bike in one week. I will build the lugs beforehand, so when you arrive to start your course they are ready to go. At the end of the course you'll have a really special frame to build up! As a beginner this course is really a great way to build something special straight from the first frame. 5 Days, 1:1, 1850 Euro, 2:1 1250 Euro, including Fork Building Course + material cost

Fillet Brazed (Lugless) Mountain Bike Frame Building Course - Build your own mountain bike without lugs. Frame building without lugs is somewhat more time intensive than with lugs. As a beginner you just need to have a bit of patience, but you can do it! No prior experience is necessary with brazing. Does not include a fork, but can be combined with my fork building class (add 150 Euro and 1 day)., or add a suspension or carbon fork as an option. up to 5 days, 1:1 1150 Euro, 2:1 900 Euro + material cost.

Fillet Brazed (Lugless) Fixie, Road, or Trekking Bike Frame Building Course - Build your own fixie, road, or trekking bike without lugs. Frame building without lugs is somewhat more time intensive than with lugs. As a beginner you just need to have a bit of patience, but you can do it! No prior experience is necessary with brazing. Does not include a fork, but can be combined with my fork building class (add 175 Euro and 1 day), or add a suspension or carbon fork as an option. up to 5 Days, 1:1 1150 Euro, 2:1 900 Euro + material costs.

Lugged Fixie, Road, or Trekking Bike Frame Building Course - Build your own fixie, road, or trekking bike with lugs. Frame building with lugs is a great way to build your first frame. Lugged frames take less time to build than lugless frames, and brazing with lugs is easier than without. No prior experience is necessary with brazing. Highly recommended for beginners! Does not include a fork, but can be combined with my fork building class (add 150 Euro and 1 day), or add a suspension or carbon fork as an option. up to 3 Days, 1:1 725 Euro, 2:1 550 Euro + material cost.

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About Us

The Faces Behind Big Forest Frameworks

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Robert Piontek

Sales/Marketing/Web Design

It takes more than frame building skills to run a business, and Robert, our multi-talent…

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Robert Piontek

Frame Builder/Artist/Visionary

Robert founded Big Forest Frameworks with the vision to build his own dream bikes that…

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Robert Piontek

Test Pilot/Team Rider

Robert has the coolest job at Big Forest Frameworks, he gets to test out all…

Contact Me

Big Forest Frameworks is located in Potsdam, Germany

Feel free to visit me in my workshop! But, I am not always there, so please contact me beforehand to arrange for an appointment.

  • Karl-Liebknecht-Str 109, D-14482 Potsdam
  • +49 (0) 159 015 32779
  • info@bigforestframeworks.com