2026 · Airborne · Road
Zeppelin MK-IV frame guide
First introduced in the late 1990s, the original Zeppelin established a reputation as one of the finest titanium road bicycles of its time. Among the earliest direct-to-consumer titanium frames, it was admired for its refined ride quality, compliance, and exceptional durability — qualities that continue to be appreciated by discerning riders today.
The Zeppelin Mk. IV revives this heritage with deliberate refinement. Built around the same front triangle as the Mk. V and featuring near-identical geometry, it is equipped for riders who value the precision and feedback of a classic rim-brake platform.
What can be adjusted?
Fixed headset and dropout/track.
Exploring a frame in RideDNA does not imply adjustable frame hardware. Tire and compatible fork choices can be studied in software, but the frame’s headset and dropout capabilities remain those listed above. Confirm fork compatibility and physical tire clearance with Airborne before changing components.
Frame features
Direct-mount rim brakes front and rear — powerful stopping with superior modulation and tactile control
Clearance for up to 30 mm tires (Direct mount brake clearance limitation) — balanced comfort and road versatility.
Quick-release 3D CNC dropouts reliable, traditional aesthetics.
Premium double-butted 3Al-2.5V titanium tubing construction — natural compliance, superior vibration damping, and lifetime durability.
Advanced hydroformed titanium T/T and D/T — precisely engineered shapes for superior stiffness where you need it, compliance where you want it, and a strikingly modern, aggressive aesthetic.
Modern endurance-oriented geometry — composed handling, efficient power transfer, and all-day comfort
For riders who appreciate the purity and direct connection of a rim-brake road machine, the Mk. IV delivers a considered, timeless expression of titanium craftsmanship.
Recorded frame geometry
Values below come directly from this Airborne model’s size records, including CAD reference stack, reach and wheelbase where recorded. Angles and BB drop use the size-specific value, falling back to the model baseline. Values are not an engine-generated setup or a guarantee of comparison eligibility. Missing measurements remain “Not recorded.”
| Size | Stack | Reach | Effective top tube | Head angle | Seat angle | Head tube | Wheelbase | BB drop |
|---|---|---|---|---|---|---|---|---|
| XS | 46.5cm | 526.1 mm | 358.1 mm | 505 mm | 70° | 74.4° | 119 mm | 981.4 mm | 77 mm |
| S | 50cm | 532.6 mm | 365.4 mm | 518 mm | 70.5° | 74° | 124 mm | 986.4 mm | 77 mm |
| M | 53cm | 549.5 mm | 379.4 mm | 540.1 mm | 71.5° | 73.7° | 138 mm | 996.9 mm | 77 mm |
| XM | 55cm | 578.9 mm | 383 mm | 555.6 mm | 72° | 73.4° | 167 mm | 1005.3 mm | 77 mm |
| L | 57.5cm | 592.3 mm | 390.8 mm | 571.9 mm | 72.8° | 73° | 178 mm | 1009.3 mm | 77 mm |
| XL | 59.5cm | 622.5 mm | 395.3 mm | 592.8 mm | 73° | 72.4° | 214 mm | 1023.5 mm | 72 mm |
| XXL | 62cm | 660.7 mm | 403.8 mm | 618.5 mm | 73° | 72° | 254 mm | 1043.7 mm | 72 mm |
Read before choosing components
Understand stack and reach · Understand fork offset and trail · Compare gravel geometry
The interactive overview contains the existing geometry, photo and component navigation. Purchase links remain on Airborne’s store; this guide does not create an order.