Titanium trail tool
Rootdown Ti
The Rootdown Ti takes the tried and tested geometry of the Rootdown and pairs it with the almost magical properties of Titanium. With an incredibly high strength to weight ratio, a silky, paint-less finish and our custom CNC’d dropouts, yoke, and braces, the Rootdown Ti is an elegant beauty that is ready for the rough stuff.
Its ductility means we can create an incredibly light frame, but still maintain compliance and quality ride feel that Chromag are known for. It's also extremely resistant to corrosion, so we can show off its clean, consistent welds and natural brilliance!
The Rootdown Ti is a beast! It features an extra robust heavy-gauge front triangle and a massive 51mm downtube, yet at 4.65lbs (med), it still saves 2lbs over its steel counterpart.
The Rootdown Ti features a 12 x 148mm Boost rear end, and is compatible with tires up to 29" x 2.5 and 27.5+ up to 2.8 wheels.
The Rootdown Ti
Titanium
Titanium is most known for it's corrosion resistance and strength to density ratio, the highest of any metallic element. It's half the weight of steel for the same tensile strength and twice as strong as aluminum alloy. In practical terms this means we can use less material (ie. thinner tubing) to achieve the same strength. Combining this with it's ductility means we can create incredibly light frames, but still maintain incredible compliance and ride feel.
Titanium is also much more resistant to fatigue and impact than aluminum alloys, and it's natural protective layer of Titanium Dioxide shields it from the elements.
A perfect balance between carbon fibre, aluminium and steel.
Call it the ti-down if you'd prefer
key features
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.
We've never tried to hide the fact some of our products are made in Taiwan, in fact, we're proud of it.
Our Taiwanese partners are incredibly skilled and some of the best in the business.
As you would expect, these products are held to the same strict standards that we're renowned for.
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.
With an incredibly high strength to weight ratio, a silky, paint-less finish and our custom CNC’d dropouts, yoke, and braces, the Rootdown Ti is an elegant beauty that is ready for the rough stuff.
Its ductility means we can create an incredibly light frame, but still maintain compliance and quality ride feel that Chromag are known for. It's also extremely resistant to corrosion, so we can show off its clean, consistent welds and natural brilliance.
Whether you get your bike in a box, or roll it out the front door here at Chromag HQ, you can rest assured your bike has been pored over with pride, and built with the utmost attention to detail by one of our extremely talented mechanics.
Threads are chased, seat tubes are reamed, head tubes are honed, fits are checked and checked again, all to make sure when you get your bike, everything is absolutely dialed.
The UDH is designed to optimize shift performance across all bikes as well as create a sensible solution for replacing damaged hangers. The UDH has been widely adopted throughout the cycling industry with hundreds of models already featuring it.
The one stop shop aggro hardtail.
geometry
The Rootdown is the latest evolution of our take on an aggressive do it all hardtail. Comfortable enough for all day adventures and capable enough for any mission. Many have tried to impersonate the long standing Rootdown.
| 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 |
|---|---|---|---|---|---|
| 630 | 630 | 639 | 648 | 657 | |
| 421 | 446 | 463 | 487 | 503 | |
| 578 | 603 | 622 | 648 | 667 | |
| 95 | 95 | 105 | 115 | 125 | |
| 1177 | 1202 | 1223 | 1251 | 1272 | |
| 50.8 | 50.8 | 50.8 | 50.8 | 50.8 | |
| 320 | 320 | 320 | 320 | 320 | |
| 677 | 714 | 738 | 762 | 799 | |
| 420 | 420 | 420 | 420 | 420 | |
| 368 | 406 | 431 | 456 | 494 | |
| 158 | 196 | 221 | 246 | 284 | |
| 64° | |||||
| 76° | |||||
| 29'' | |||||
* Max. post insertion based on Rockshox Reverb
THIS IS AN APPROXIMATE GUIDE, SOME PEOPLE HAVE LONGER LEGS THAN OTHERS!
Sizing
If you're between sizes, it's a good idea to try to ride them both, either by hopping on a demo or stealing from a close friend. If that isn't an option, examine reach, stack and ETT numbers on your current bike and compare. If in any doubt, please get in touch and we'd be happy to chat about it with you.
You could also check out the review section, to see how this bike fits other people.
It's so shiny!
gallery
Builds & Specs
• Fork // Rock Shox Lyrik Select+ 160mm Boost 110x15mm
• Stem // Chromag HiFi BSX 40mm
• Bar// Chromag OSX 25mm Rise, 800mm
• Headset // Cane Creek Forty ZS
• Crank // SRAM GX 170mm
• Brakes // SRAM G2 RSC
• Rotors // SRAM 180mm
• Shifter // SRAM GX Eagle AXS
• Cassette // SRAM GX Eagle 10-52t
• Derailleur // SRAM GX Eagle AXS
• Rims // Chromag 29" Phase30
• Hubs // Chromag R4
• Tires // Maxxis Minion DHF/DHR
• Seatpost // RockShox Reverb AXS
(125mm - S) (150mm - M) (175mm - M/L) (200mm - L, XL)
• Saddle // Chromag Trailmaster DT
• Grips // Chromag Format
• Chain // SRAM GX Eagle
Build options are subject to availability and liable to change without notice.
• Wheel Size // 29" or 27+
• Recommended Fork Travel // 160mm (±10mm)
• Material // 4130 Chromoly Steel
• Frame Weight (M/L) // 7.13lbs
• Hub Spacing // Boost 148mm (Axle Included)
• Headset // 44-56 Semi Integrated
• Seat Clamp Size // 35mm
• Seat Post Size // 31.6mm
• BB // 92mm Press Fit (PF92)*
• Hanger // UDH (Included)
• Brake Mount // IS
• Frame Origin // Taiwan
* 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.
Questions?
Buying a bike is a big deal.
Don't hesitate to reach out with any and all questions!
Worldwide shipping
We ship bikes anywhere in the world with competitive rates from UPS and FedEx. Alternatively you can pickup right here at Chromag HQ.
Warranty
All of our bikes are backed by a 1 year warranty.
After that we still have your back with our crash replacement program.
FAQ's
This is possible but does notably change the geometry. The change results in approximately 1° slacker head and seat tube angles, 20mm shorter reach and BB height 10mm closer to the ground.
A 2.5” Maxxis fits with appropriate room around it.
No, there are no ISCG mounts on the Rootdown Ti.
All our frames can work with +/-10mm of fork travel. To generalise the geometry change is around a 0.5° slacker head tube and seat tube angle for every 10mm added.
All geared hardtails run a standard boost chain line (52mm)
With a 52mm chainline (SRAM boost standard), the Rootdown Ti can fit up to a 34-tooth chainring.
For context, most of us here are running a 30t, with a 10/52 cassette.
There is a serial number on the back of your fork arch, adding this to Rockshox Trailhead app along with your weight gives a good baseline setting.
Nothing of note on this frame. Please let us know if you have tried to fit a more obscure component and faced issues.
Greasing you seat post prevents this issues, we strongly recommend re-greasing every 6 months at a minimum.
Anti-seize such as copper slip is a good grease to use for titanium especially where something aluminium is in contact with it.
Not much! Here's what you need to do if we shipped your bike to you:
• Inflate tires to desired pressure. (Sealant is already installed)
• Install brake rotors, tightening bolts to 6.2Nm.
• Attach derailleur to frame, tightening to 9Nm making sure that the B-tension tab rests properly against the derailleur hanger stop.
• Grease headset bearings, install fork and handlebar, positioning the headset spacers above or below the stem according to rider fit.
• Align handlebar stem, preload headset and tighten stem pinch bolts to 8Nm.
• Install wheels, tighten axles.
• Install chain with quick link.
• Grease pedal threads and install pedals using pedal washers supplied.
• Adjust brakes, shifters, saddle position and height for personal preference.
• Set up suspension.
• Bed-in brakes. (Roll down a gentle gradient dragging one brake at a time. Avoid locking them up.)
• Go ride!
Note: If you had to Google "Nm", or you don't know which way to install your rotors, you should probably get a qualified mechanic to build your bike!
Here's what's been done:
• Chain length adjusted.
• Gears adjusted.
• Brakes set up and bled.
• Handlebar tightened to 6Nm.
• Grips tight on handlebar.
• Crankset tight, bottom bracket tight/adjusted.
• Saddle and seatpost tight.
• Seatpost greased *make sure to re-grease every 6 months!
• Tire sealant installed.
• Cassette tight.
