Otso

Otso Waheela C Geometry & Bikepacking Bag Fit2026

Discontinued. Otso no longer lists the Waheela C. It's here because these frames stay in circulation second-hand and the geometry is still what you need to pick bags — but you won't find one new.

Frame
Carbon
Wheel size
700c
Max tire
54mm (700c / 29in)
From
$1,350
Sizes
4

Otso Waheela C frame geometry, drawn to scale

Every tube angle and length below is from the published chart, not an illustration. The front triangle area is the number that decides which frame bags fit — and it changes a lot across sizes.

Otso Waheela C — S. Front triangle ≈ 1236 cm² · effective top tube 546mm · seat tube 475mm
Otso Waheela C in size S, drawn to scale from Otso's published geometry. The shaded area is the front triangle — roughly 1236 cm² of space for a frame bag. Wheels are indicative; frame lines are accurate.
Otso Waheela C — M. Front triangle ≈ 1362 cm² · effective top tube 560mm · seat tube 510mm
Otso Waheela C in size M, drawn to scale from Otso's published geometry. The shaded area is the front triangle — roughly 1362 cm² of space for a frame bag. Wheels are indicative; frame lines are accurate.
Otso Waheela C — L. Front triangle ≈ 1500 cm² · effective top tube 583mm · seat tube 540mm
Otso Waheela C in size L, drawn to scale from Otso's published geometry. The shaded area is the front triangle — roughly 1500 cm² of space for a frame bag. Wheels are indicative; frame lines are accurate.
Otso Waheela C — XL. Front triangle ≈ 1645 cm² · effective top tube 605mm · seat tube 570mm
Otso Waheela C in size XL, drawn to scale from Otso's published geometry. The shaded area is the front triangle — roughly 1645 cm² of space for a frame bag. Wheels are indicative; frame lines are accurate.

What this frame gives a loaded bike

Chainstay length is the gap between the seat tube and the rear axle, which a rack, panniers and your heels all have to share. Bottom bracket drop is how far the cranks sit below the axles. Both are compared against the median across every current frame we hold.

420mm chainstays, 15mm shorter than the 435mm median across the 65 current frames here. Bottom bracket drop 68mm, close to the 70mm median. The fork publishes cargo mounts, and the frame publishes bottle or accessory mounts. Otso states the frame does not take a rear rack. Widest published tire 54mm on 700c / 29in. It takes a dropper post.

Every figure above is the manufacturer's, computed against the rest of the database. It says what the frame allows, not how it feels — nobody here has ridden it.

What it can carry

Mount provision and clearance, as Otso publishes it.

Fork mounts
fork bottle bosses
Bottle mounts
extra down tube mounting points (six total), as well as top tube gas tank mounting points
Rack & fender
Numerous braze-ons allow Waheela C to accommodate water bottles, fenders, racks, frame bags, and more.
Max tire clearance
54mm on 700c / 29in

Otso's wording: “Clearance for tires up to 54mm wide in 700c or 650b (most 29" x 2.1" tires) at 430/440mm chainstay positions; Max Clearance 29 x 2.1" (54-622)”

Dropper post
Compatible

Geometry

All figures in millimeters except angles. Effective top tube and seat tube are the two that decide frame bag fit.

SizeEff. top tubeSeat tubeStandoverHead tubeStackReachChainstayWheelbaseBB dropHead angleSeat angle
S54647573794541375420-4401008-102868-7271°72.5°
M560510765107555385420-4401015-103568-7271.5°72.5°
L583540798149595395420-4401039-105968-7271.5°72.5°
XL605570831191635405420-4401062-108268-7271.5°72.5°

Source — Otso's own geometry chart: https://otsocycles.com/collections/waheela-c — checked 2026-08-18. A dash means the figure isn't published; we leave it blank rather than estimate.

Note: Manufacturer page marks Waheela C variants as Discontinued and says the Waheela R has replaced the Waheela C. Geometry is published in millimetres/degrees. Tuning Chip induced head/seat tube angle change is ±0.2° for all sizes. Otso publishes routing ports behind the head tube for brake lines, shifter cables and dropper post routing.

Questions people ask about this frame

Answered from what Otso publish. Where they publish nothing, that is what it says.

Does the Waheela C take fork cargo cages?

Yes. Otso publish cargo-cage mounts on the fork, but the wording does not give a count we can stand behind, so we're not going to put a number on it.

What is the widest tyre the Waheela C takes?

54mm on 700c / 29in. That is the frame figure rather than the fork's, and it is what limits a loaded bike.

Will a seat pack work on the Waheela C?

The dropper is the problem, not the pack. This frame publishes dropper routing, and a dropper and a seat pack want the same space — fitting one rules out almost every strap-on seat pack and leaves rail-mounted bags at a fraction of the volume. Run a rack or a saddle-rail bag if you want both.

Which frame bags fit

Every frame bag we track, checked against this frame's published geometry. Pick your size.

Checking 16 frame bags against a 583mm effective top tube and 540mm seat tube. 16 fit.

Excellent fit
Revelate Designs Joey Downtube Bag 1L

Plenty of room in frame triangle

$75
108g
Excellent fit
Revelate Designs Joey Downtube Bag 2L

Plenty of room in frame triangle

$75
136g
Excellent fit
Topeak MidLoader 4.5L

Plenty of room in frame triangle

$78
195g
Excellent fit
Blackburn Outpost Frame Bag Medium

Plenty of room in frame triangle

$80
280g
Excellent fit
Apidura Backcountry Frame Pack 1L

Plenty of room in frame triangle

$81
100g
Excellent fit
Topeak MidLoader 6L

Plenty of room in frame triangle

$93
337g
Excellent fit
Oveja Negra Superwedgie 2.0 Frame Bag

Plenty of room in frame triangle

$120
198g
Excellent fit
Apidura Racing Frame Pack

Plenty of room in frame triangle

$151
145g
Excellent fit
Revelate Designs Ranger Frame Bag

Plenty of room in frame triangle

$155
340g
Excellent fit
Ortlieb Frame-Pack RC

Plenty of room in frame triangle

$165
221g
Excellent fit
Ortlieb Frame-Pack Toptube 3L

Plenty of room in frame triangle

$165
170g
Excellent fit
Apidura Expedition Frame Pack 3.8L

Plenty of room in frame triangle

$168
244g
Excellent fit
Ortlieb Frame-Pack Toptube 4L

Plenty of room in frame triangle

$170
200g
Excellent fit
Rockgeist Half Frame Bag

Plenty of room in frame triangle

$190
170g
Good fit
Moosetreks Full Frame Bag

Good fit within frame triangle

$60
300g
Good fit
Apidura Expedition Full Frame Pack

Good fit within frame triangle

$232
358g

Frame bag fit is calculated from Otso's published geometry, so it's as reliable as their chart. Seat packs and handlebar rolls depend on your exposed seatpost and bar width, which no geometry table lists — the bag finder covers those once you add your own measurements.