TD4.2 Carbon
From your local group ride
to the Great Divide.
Starting at $3,035.00
For over a decade, the TrailDonkey platform has embodied Rodeo Labsโ pursuit of versatility and performance in a carbon frameset. TD4.2 continues that legacy across an incredible range of disciplines and conditions.
With the arrival of SRAMโs Full Mount standard, the 4.2 update brings UDH compatibility and our new LockJaw 2 sliding dropout system. Fork options have been expanded to included the proven Spork 3, or the new Spork 4 which features improved tire clearance and additional features.
Where other adventure platforms make big claims, TD4 has proven itself in the real world, time and time again.
Next, itโs your turn to add to the TD story.
Where will it take you, and where will you take it?
Traildonkey Heritage & Achievements
Proven performance in ultra-endurance events, including:
Silk Road Mountain Race โ podium finish
North Cape 4000
Atlas Mountain Race – podium finish
Traka 550
Gravel Worlds (miltiple wins)
Unbound 200 and XL (wins / podiums)
Ride Across America
4th place overall at the 2024 Tour Divide
Achieved the fastest moving time of all bikes that completed the route. Ridden by Cade Reichenberger
TD4.2 – Features overview
What makes the TD4.2 truly unique
Starting at $3,035.00
Routing choice
There is no doubt that fully integrated, hidden routing is the most elegant way to build a bike, and TD4 supports full integration from the go, but only if you want to.
Simply match the headset to the brand / spec of your integrated bar / stem and the frame has been designed for maximum compatibility. Alternatively, our supplied headseat supports semi-integrated routing that does not run through the stem, but does route through the steer tube.
Lastly, and perhaps most importantly, you can route TD4 traditionally into the downtube, avoiding headset routing all together for a bike that will be easier to service or travel with.
TD4 leaves the important spec decisions up to you.
Fully integrated routing
Semi integrated routing
Traditional routing
UDH Compatibility
With TD4.0 we featured an elegant sliding dropout system that we named LockJaw. LockJaw 2.0 allows for the wheelbase of TD4.2 to be adjusted providing three functional benefits:
- Increased tire clearance, up to 700ร2.4 (with Laid Back Slider) or 650bx2.4.
- Native singlespeed builds with no chain tensioner needed, using the sliderโs adjustable range to set correct singlespeed chain tension.
- Geometry and handling adjustments. The further forward the sliders are, the quicker the bike handles, the further back the sliders are, the more stable and predictable the bike feels.
If you arenโt a rider who will ever take advantage of LockJaw features, you can simply set it and forget it, and TD will perform as any other standard dropout gravel bike.
Compatibility
Secure interlocking plates with Ti hardware
30mm of slider travel
Full Mount / UDH Support
T47 threaded BB
Every frame that Rodeo offers has featured a threaded bottom bracket since the inception of the T47 bottom bracket standard.
T47 bottom brackets have the reliability and quiet operation provided by threaded bearing cups, and the large diameter bearing shell can accomodate any crankset and spindle standard that the industry dreams up.
Features
Threaded cups for quieter operation
large shell area for max compatibility
easier access to internal routing
Monocoque construction
Both the TD4 frameset and the Spork fork that accompanies it feature true single piece carbon monocoque construction.
Monocoque construction is uncommon in the bike industry due to its cost and complexity, but it eliminates weaker bonded methods used in most carbon frames. Building the frame and fork as single pieces allows complete control over the carbon layup across every surface.
The result is a frameset that has proven exceptionally reliable across road, gravel, MTB, and fully loaded bikepacking, with zero failures.
TD4 is tested to ISO 4210 MTB racing standards, far beyond what a typical gravel bike requires, placing it in a class of its own for carbon durability.
Features
Single piece monocoque construction
Stronger
Dependable
Proven
Direct mount bags
The TD4 frameset thrives in loaded riding situations thanks to its ample frame and fork mounting points.
Notably, the main triangle of the frame features direct mount frame bag eyelets so that mounting straps can be ditched in favor of direct mounting bolts points. Not only is the net effect more elegant, itโs also less likely to be harmed by the chafing of velcro bag straps or bungee chords.
The updated Spork 3.3 now has three mid leg eyelets for more bag or cage mounting options.
Features
Rack and fender support front and rear
Triple water bottle mounts on the main frame
Direct main triangle frame bag mounts
Top tube feed bag mounts.โจTriple fork leg eyelet mounts
Downtube Storage
The downtube of the TD4 features an internal storage system, allowing you to store tools, food, gear, or even emergency clothing.
Our one-button release system ensures easy access to the storage space, and also allows access when internally routing shift and brake lines during the bike build. Inside the downtube there are also two cable and housing tie-downs in order to keep your internally routed components rattle-free.
The downtube storage is fully rebuildable, serviceable, and tuneable for a reliable, tight fit.
Storage
One Button door release
Full downtube access
Full length internal frame storage
Brake / shift routing tie-downs
Technical Information
Everything you need to know about geometry, fit, and the technical makeup of the bike.
Geometry
To compare TD4.2 geometry with a bike you already own, we highly recommend the excellent tool from the folks at Bike Insights. Simply search and load your existing bike in the left column, and load the TD4.2 in the right column. Adjust size / tires / etc as needed. These links will help you get started:
| Frame size | 52 cm | 54 cm | 56 cm | 58 cm | 61 cm | |
| Seat tube (C-T) | 450 | 470 | 490 | 520 | 540 | |
| Top tube length (effective) | 520 | 540 | 563 | 581 | 605 | |
| Chain stay length | 435 (variable) | 435 (variable) | 435 (variable) | 435 (variable) | 435 (variable) | |
| Seat tube angle | 74ยฐ | 74ยฐ | 73ยฐ | 73ยฐ | 73ยฐ | |
| Bottom bracket drop | 65 | 65 | 65 | 65 | 65 | |
| Head tube length | 125 | 145 | 160 | 175 | 207 | |
| Head tube angle | 70ยฐ | 71ยฐ | 72ยฐ | 72ยฐ | 72ยฐ | |
| Reach | 366 | 374 | 386 | 393 | 408 | |
| Stack | 538 | 559 | 578 | 595 | 625 | |
| Fork length | 395 | 395 | 395 | 395 | 395 | |
| Fork rake | 50 | 50 | 45 | 45 | 45 | |
| Front center | 595 | 606 | 609 | 616 | 641 | |
| Wheelbase | 1022 (variable) | 1032 (variable) | 1036 (variable) | 1043 (variable) | 1067 (variable) | |
| Standover height at center of top tube, 700 x 40mm | 773 | 793 | 812 | 833 | 858 | |
| Dimensions listed in millimeters and degrees unless otherwise indicated. | ||||||
Fit Chart โ Traildonkey 4.2
We’ve used these fit basics to fit riders all over the world for over a decade. 95% of riders can be well fit for frame size based on height alone. If you find yourself on the border between two frame sizes, you can generally be fit on either with just a small adjustment to stem length and saddle position.
| Frame size | Rider height |
| 52 cm | 5โ4โ-5โ6โ |
| 54 cm | 5โ6โ-5โ9โ |
| 56 cm | 5โ9โ-6โ0โ |
| 58 cm | 6โ0โ-6โ2โ |
| 61 cm | 6โ2โ-6โ4โ |
Every Rodeo bike is built to order, so please do let us know if you have custom component size requests.
If you have questions about your fit, we’re here to help. You can get in touch with us via phone, text, or email on our contact page.
Technical Specifications
| Frame Material | Toray T800 Carbon Fiber |
| Country of manufacture | China |
| Design / Tooling | 100% Designed and Engineered by Rodeo Labs |
| Tire clearance 650b | Max width: 2.4โณ | Min. recommended width: 40mm | Varies by tire / rim / conditions |
| Tire clearance 700c | Max width: 55mm / 2.1โณ | Min. recommended width: 28mm Varies by tire / rim / conditions. Donโt get greedy. |
| Frame weight | 58cm 1190g raw. Other sizes approx. 50-100g lighter per size. Hardware โ approx. 150g. Painted frames will be 100-250g heavier. |
| Fork | Rodeo Spork 3.3 / Full carbon adventure fork |
| Fork weight | Average 495g |
| Cable routing | Mechanical, Di2, eTap. Convertible or cappable modular endcaps. Full internal housing runs through downtube / BB / Stays |
| Dynamo routing | Internal fork. Front and rear light, USB stem cap, dynamo hub compatible. Top tube port. Seat stay ports. |
| Brake Standard | Flat Mount, 140mm/160mm front brake plate | 160mm flat mount native rear brake |
| Bottom Bracket | T47 threaded for inboard bearing, 85.5 mm width. |
| Seat Post | 31.6mm or 27.2mm. 27.2 shim supplied with each frame. |
| Dropper post | Internal, cable routing through BB area via pass through for easier routing. |
| Seat Clamp | TD4 clamp designed to integrate with frame shape. Simple clamp design, no internal wedge or proprietary clamp oddities. |
| Thru Axles | Rear โ 12mm x 175mm total length // M12xP1.0x14.5mm threading Front โ 12 x 127mm total length // M12xP1.5x16mm threading Front optionally convertible to 15mm. |
| Headset | 52mm integrated frame cups. Rodeo semi-integrated headset included w stainless bearings. IS 52 | 40 upper, IS52 | 40 lower. Integrated stem / bar installations will typically use a matching headset. |
| Chainring compatibility | 2x: max 50/34, min 36/24. 1x: max 48, and larger is possible with a WIDE spec crankset. |
| Front derailleur mounting | Braze-on, removable derailleur hanger available upon request. |
| Rear derailleur hanger | Aluminum, replaceable UDH native slider allows for SRAM Transmission drivetrain installations. Standard derailleur supported using the SRAM UDH standard derailleur hanger. |
| Di2 battery position | Downtube. Secured with hardware / ties. Accessed via downtube storage hatch. |
| Fender mounts | Frame and fork with Stay Dry kit. Max 65mm outer fender width at 700c. M5 bolts. |
| Bottle cage mounts | 2 positions inside main triangle via 3 bosses per position. 1 on underside of down tube. 2 on fork, one per leg. Two top tube eyelets also support bottle or bag mounting. |
| Rack mounts | 1 on seat stay bridge. Lower seat stays 1 per side. Tailfin mounting supported on frame eyelets or via through axle kit from Tailfin. Must use the optional Tailfin UDH adapter matched to your derailleur. |
| Fork mounts | Three mid-leg eyelets per fork blade, spaced for a water bottle cage or three bolt cargo cage. (M5 x 0.8mm). Use 25mm bolts with washer for heavy loads. Two eyelets near axle per side (M5 x 0.8mm). Optional offset eyelet kit available. |
| Fork crown bolt | Not included. 75mm length typically needed for lights / racks. Not compatible with recessed brake nuts. Use nylon washers on each end of bolt to protect fork. |
| Fork cargo capacity | 27.6 lb / 12.5 kg total cargo weight, evenly distributed |
| Headset spacer max height | 40mm between headset and stem |
| Frameset rider weight limit | 280 lb / 127kg |
| Slider Range | 425mm โ 455mm |
| Certification | Traildonkey 4.2 has passed the entire suite of ISO 4210 MTB Racing suite of tests. |
| Warranty | Warranted for life to the original owner against defects in design, materials, and workmanship. Please read our complete warranty policies here. |
Frequently Asked Questions
Launching a new bike brings up a lot of questions. Weโve got answers. As we get more inquiries on details, we will add them to this page. If you have a question of your own, just email us at bikes@rodeo-labs.com.
FAQ
Downloads
Helpful resources designed to support your build, setup, and gear customization.
Ownerโs Manual
This ownerโs manual seeks to cover all of the uniquely developed features on the new Traildonkey 4.2 frameset.
Frame Bag Templates
This ownerโs manual seeks to cover all of the uniquely developed features on the new Traildonkey 4.2 frameset.