Description

Draco Bikes Purple Chromag Rootdown 29″ – Size: M/L

The Rootdown is hands down Chromag’s best-selling bicycle.

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 27.5+. An agile ascender and a dominant descender that is ready for anything.

DRACO BIKES CUSTOM CHROMAG ROOTDOWN COMPONENTS

4130

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 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 they can use less material and achieve a product that can withstand the abuse that riders love to throw at it.

ROOTDOWN GEOMETRY

Shown in inches::

Frame Size	S	M	M/L	L	XL
STACK	24.8	24.8	25.1	25.5	25.8
REACH	16.5	17.5	18.2	19.1	19.8
EFFECTIVE TOP TUBE	22.8	23.7	24.5	25.5	26.3
HEAD TUBE	3.7	3.7	4.1	4.5	4.9
WHEEL BASE	46.3	47.3	48.1	49.2	50
BB DROP	2	2	2	2	2
BB HEIGHT	12.6	12.6	12.6	12.6	12.6
STAND OVER	26.7	28.1	29.1	30	31.5
CHAIN STAY	16.5	16.5	16.5	16.5	16.5
SEAT TUBE	14.5	16	17	18	19.4
MAX POST INSERTION*	7.4	8.9	9.8	10.8	12.3
HEAD ANGLE	64°
SEAT ANGLE	76°
WHEEL SIZE	29”

* Max. post insertion based on Rockshox Reverb

ROOTDOWN SPECS:

Hub Spacing // Boost 148mm (Axle and Hanger Included)
Headset // 44-56 Semi Integrated
Seat Clamp Size // 35mm
Seat post Size // 31.6mm
BB // 92mm Press Fit (PF92)
Wheel Size // 29″ or 27+
Recommended Fork Travel // 150 – 170mm

ROOTDOWN SIZING  (NOTE: THIS IS AN APPROXIMATE GUIDE)