Chromag Rootdown frame 2023
Chromag Rootdown frame 2023
Chromag Rootdown frame 2023
  • Load image into Gallery viewer, Chromag Rootdown frame 2023
  • Load image into Gallery viewer, Chromag Rootdown frame 2023
  • Load image into Gallery viewer, Chromag Rootdown frame 2023

Chromag Rootdown frame 2023

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The Rootdown is hands down Chromag's best-selling frame.

Built with their custom-drawn tubes and featuring a 12x148mm Boost rear end and stealth post routing, this is the evolution of Chromag frame design in 29er form, compatible with tires up to 29" x 2.5 and 27.5+ up to 2.8 wheels. An agile ascender and a dominant descender that is ready for anything.

Contact us if there is a size or colour you would like to order. We can also offer a custom build on a Rootdown frame so send us a message or email to get a quote for a build


Head Tube Badge

Your bike is special. The head tube badge is the finishing touch so we’ve always made a point of taking the time to do something interesting with it. Our head tube badges have changed over the years and are an indication of the time each bike was made. Whether it’s a cast bronze, or polished stainless steel, water cut aluminum or a 3D CNC carving, each one represents our commitment to detail.

Chromag Headtube Badge


As 12mm through axles have proven to be solid, reliable and convenient, we have committed most of our models to utilize this format.   Our 12mm dropouts are accurate and tough and feature a removable derailleur hanger with a sturdy interface for strength and reliability.  All 2017 models (excluding Monk and Nice Dreams) will follow the 148mm boost spacing.

chromag boost dropouts


Our ‘Yokel’ design is a small machined junction on the chainstay that helps accommodate both tire clearance and chainring clearance. Our first versions were huge CNC yokes that bridged the entire front end of the chainstays. Over time we refined this to minimize weight by arranging our chainstay layout asymmetrically and reducing the yoke to a minimal size. It’s one of our most unique frame features and has been copied by other frame makers.

Chromag Yokel

Chain Stay Protector

All Chromags now ship with our injection moulded chain stay protector to help keep the paint fresh and the noise low. These have an adhesive applied, but also slot for zip ties if they come unstuck years down the line, or if you want to apply it to another frame.


Show:  | 
Frame Size S M M/L L XL
STACK 630 630 639 648 657
REACH 421 446 463 487 503
EFFECTIVE TOP TUBE 578 603 622 648 667
HEAD TUBE 95 95 105 115 125
WHEEL BASE 1177 1202 1223 1251 1272
BB DROP 50.8 50.8 50.8 50.8 50.8
BB HEIGHT 320 320 320 320 320
STAND OVER 677 714 738 762 799
CHAIN STAY 420 420 420 420 420
SEAT TUBE 368 406 431 456 494
MAX POST INSERTION* 188 226 251 276 314

* Max. post insertion based on Rockshox Reverb


Almost all Chromag frames are made from quality 4130 chromoly steel tubing. Chromoly is an abbreviation for chromium-molybdenum indicating the materials that the steel is alloyed with.

The added chromium helps increase the hardenability of the steel and also provides some corrosion resistance.
The molybdenum helps to increase the toughness of the steel.

It has a high tensile strength but is also malleable which is what gives Chromag frames their notorious ride quality and feel. Chromoly is often used when more strength is required than that of mild carbon steel.

It falls under the AISI (American Iron & Steel Institute) 41XX designations which is where the “41” comes from. The “30” indicates it contains approximately 0.30% carbon by weight.

Chromoly is much stronger than traditional 1020 steel and it has a higher strength-to-weight ratio and high tensile strength, which means Chromag can use less material and achieve a product that can withstand the abuse that riders love to throw at it.