Doctahawk - Pewter

CHF 4,192

Longer, lower, slacker, faster, stronger, slacker, etc etc, did we say slacker? Two saucy little Doctahawks, note the slightly differing specs:

M in Gloss Pewter Grey

  • GX drivetrain
  • G2 Brakes
  • OneUp dropper 170mm
  • Mood DT saddle
  • Red anodized accents

Large in Matte Pewter Grey

  • GX drivetrain
  • G2 Brakes
  • Bassix static seatpost
  • Trailmaster DT saddle
  • Gold anodized accents

(Full spec sheets below)

If you liked where the geometry of the Rootdown was headed but it wasn't enough, then the Doctahawk is for you.

Hand built in Canada with our custom-drawn tubes and featuring a 12 X 148 Boost rear end and stealth post routing, this is the most aggressive Chromag to date. Don't let the 62° head angle fool you though, the Doctahawk actually features the steepest seat tube angle in the line making sure you can get up to get down. Coupled with 170mm up front there's plenty of opportunity to hear "I can't believe they rode that on a hardtail!".

Only 2 left in stock!

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 steels hardenability and also provide 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 our 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 we can use less material and achieve a product that can withstand the abuse that riders love to throw at it.

Chromag 4130 Tubing

Hub Spacing // Boost 148mm (Axle and Hanger Included)
Headset // 44-56 Semi Integrated
Seat Clamp Size // 35mm
Seatpost Size // 31.6mm
BB // 92mm Press Fit (PF92)*
Wheel Size // 29" or 27+
Recommended Fork Travel // 170mm (+ or - 10mm)
Builder // Brad Howlett
Weight // 7.05lbs / 3.19kg (M/L)

Click here to view the frame user guide.

We hand ream PF92 BB shells carefully to a high tolerance and BB cup dimensions from different manufacturers vary. We follow SRAM-Dub specifications and SRAM BB cups are our first recommendation for the most accurate fit. If there is a specific BB/Crank combo you wish to fit to your frame, we can assist in evaluating the fit and even potentially ream and fit the BB for your new frame.

PARTS Pewter/Red M Pewter/Gold L
FORK Rockshox Zeb Select + 170mm Rockshox Yari RC 180mm
STEM Hifi35 35mm Hifi35 BSX 35mm
HANDLEBAR OSX35 Black/Red 35mm OSX35 Black/Black 25mm
HEADSET Cane Creek Forty Cane Creek Forty
ROTORS SRAM Centerline 180mm  SRAM Centerline 180mm 
WHEELSET Phase30 / R4 Ally / R4
TIRES Maxxis Minion DHF/DHR Maxxis Minion DHF/DHR
SEATPOST Rockshox Reverb Bassix 400mm
SADDLE Chromag Trailmaster DT Chromag Trailmaster DT
GRIPS Chromag Format Chromag Basis

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.

Doctahawk Geometry

Show: |
Frame Size STypical Rider Height: 155cm - 165cm MTypical Rider Height: 163cm - 174cm M/LTypical Rider Height: 172cm - 183cm LTypical Rider Height: 181cm - 192cm XLTypical Rider Height: 190cm - 200cm
Effective Top Tube581602623651678
Head Tube105105105115125
Wheel base12011223124912931323
BB Drop4848484848
BB Height323323323323323
Stand Over669694730756792
chain stay425425425435435
Seat Tube356382419445482
Max Post Insertion*176202239265302
Head Angle62.5°
Seat Angle76.5°
Wheel Size29.0''

* Max. post insertion based on Rockshox Reverb

Doctahawk Sizing

Note: This is an approximate guide, some people have longer legs than others! Feel free to contact us to discuss.