"I want a bike that is lawless. I want to be able to descend anything I find myself above but I want to get up there with minimum of fuss and maximum speed, which is why I want a 29er. Too many people discredit 29ers as being only for old guys and cross-country racers, but bikes like the Rootdown defy small-minded definition. I’ve tried my hand at all types of mountain biking but after years of searching I realized I just like being out on the trails and that specific categorization is a waste of time. I just want to fly through the woods, feel the loam flick up on my shins, and never have to worry about wiping the grin off my face."

Specs

Big wheels, all mountain

Following the success of our Surface frame, we've taken the same agile geometry and modern features to production to create the Rootdown.

  • Handmade in our Taiwanese partner factor
  • Custom chromoly tube set
  • Chromag's own trail honed geometry
  • Chain stay length optimized at 16.9"/429mm
  • Custom CNC machined dropouts
  • Chromag modular dropout system for 10x135mm or 12x142mm
  • Chromag’s own ISCG tabs
  • 44-millimeter head tube accepts tapered steerer forks
  • Designed with a 140-150mm travel fork in mind
  • 31.6mm diameter seat tube with stealth routing
  • 35mm seat collar
  • 2.4-inch tire clearance
  • 29" wheelset

Colours

Black, Blue, Grey


Features

Modular Dropouts

We introduced our modular dropout in 2013 in order to accommodate both 10 x 135 and 12 x 142 hub interfaces. Our system interlocks and uses 6mm bolts for durability and longevity. It has proven extremely reliable and the convenience of being able to adapt to hub types adds a degree of future-proof to our bikes.

Head tube badges

Bikes are special. The headtube badge is the finishing touch so we’ve always made a point of taking the time to do something interesting with it. Our headtube 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.

Yokel

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.

Tubing

Making modern chromoly frames is challenging when most of the tubes available on the market are from an era of mountain biking long past. After several years of frame production we reached the point where we could design and produce our own custom tubing for the majority of our frame tubes. This contributes to the unique look of many of our frames but more importantly allows us to configure our bikes exactly as we want for each design.


 

 


Geometry

  
Chainstay 16.9" 429mm
Headtube 4.2" 107mm
Head Angle 67.5°
Seattube Angle 73°
BB Height 12.9" 328mm
Seatpost Size 31.6mm
Headset Size 44mm i.d.
Ft. Derailleur Size 34.9mm
BB Shell 73mm
*designed with 140-160mm travel fork

Sizing

 SMM/LLXL
TYPICAL RIDER HEIGHT 5'2 - 5'7"
157 - 170cm
5'5"-5'10
165 - 178cm
5'8" - 6'2"
173 - 188cm
6' - 6'4"
183 - 193cm
6'3" - 6'7"
190 - 201cm
TOPTUBE LENGTH (EFFECTIVE) 22.25"
565mm
23"
584mm
23.75"
603mm
24.4"
620mm
25"
635mm
SEATTUBE LENGTH (C-TOP) 15.5"
394mm
17"
432mm
18.5"
470mm
19.5"
495mm
21"
533mm
REACH 381mm 401mm 420mm 436mm 451mm  
STACK 623mm 623mm 623mm 623mm 623mm  

Complete Builds

PARTSGX BUILDX01 BUILD
FORK Rock Shox PIKE RC 150mm SA Rock Shox PIKE RC 160mm 2P
STEM Chromag Ranger 60mm Chromag Ranger 60mm
HANDLEBAR Fubars OSX Fubars OSX
HEADSET Cane Creek 40 Cane Creek 40
CRANK SRAM GX-1400 X01
BRAKES SRAM Guide RS SRAM Guide RSC
ROTORS 180mm Centreline 180mm Centreline
SHIFTERS SRAM GX 11 SPD SRAM X1
CASSETTE SRAM XG-1175 FULL PIN SRAM XG-1195 X-DOME
REAR DERAILLEUR SRAM GX 1X11 X-HORIZON SRAM X01 X-HORIZON MED CAGE
WHEELSET Stans Rapid, SRAM MTH Stans Flow EX. HOPE Hubs
TIRES Schwalbe or Maxxis Schwalbe or Maxxis
SEATPOST Chromag Dolomite Chromag Dolomite
SADDLE Chromag Trailmaster DT Chromag Trailmaster DT
GRIPS Chromag Basis Chromag Basis
CHAIN SRAM PC-XX1 SRAM PC-XX1
REAR AXLE 12X142 MAXLE THREAD 12X142 MAXLE THREAD
PRICE $3,225 $4,390
FRAME ONLY $850 $850
  FOR REFERENCE ONLY. FORK OPTIONS VARY.  

To purchase, please contact us directly. We are happy to answer all your questions about our bikes and products.
Call: 604-905-6667
Email: info@chromagbikes.com