Salsa Cutthroat Geometry & Bikepacking Bag Fit2026
Brian Williams rides this bike. The geometry below is Salsa's published chart, but the fit notes on this page come from riding one loaded — including Katy Trail.
The same page we read this geometry from. We don't hold live pricing or stock for frames, so check both there.
We may earn a commission if you buy through this link, at no extra cost to you.
Salsa Cutthroat 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.
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.
445mm chainstays, 10mm longer than the 435mm median across the 65 current frames here. Bottom bracket drop 70mm, close to the 70mm median. The fork publishes cargo mounts, and the frame publishes up to 3 bottle or accessory positions. A rear rack needs a Rack-Lock seatpost collar, which the price does not include. Widest published tire 61mm 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 Salsa publishes it.
- 29 x 2.4" rear
- 29 x 3.0" front
Salsa's wording: “29 x 2.4" rear; 29 x 3.0" front”
Builds
As Salsa lists them. Prices are MSRP at our last check and move around — treat them as a reference point, not a live quote.
| Build | Drivetrain | MSRP |
|---|---|---|
| Cutthroat C GRX 610 1x | Shimano GRX 610 1x | $3,599 |
| Cutthroat C Apex AXS Transmission | SRAM Apex AXS Transmission | $4,399 |
| Cutthroat C Apex S1000 AXS Transmission | SRAM Apex S1000 AXS Transmission | $4,599 |
| Cutthroat C Rival GX AXS Transmission SUS | SRAM Rival/GX AXS Transmission | $7,299 |
Geometry
All figures in millimeters except angles. Effective top tube and seat tube are the two that decide frame bag fit.
| Size | Eff. top tube | Seat tube | Standover | Head tube | Stack | Reach | Chainstay | Wheelbase | BB drop | Head angle | Seat angle |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 52cm | 520 | 356 | 700 | 90 | 585 | 357 | 445 | 1050 | 70 | 69° | 74.5° |
| 54cm | 540 | 419 | 742 | 98 | 592 | 372 | 445 | 1066 | 70 | 69° | 74.25° |
| 56cm | 560 | 508 | 811 | 127 | 620 | 385 | 445 | 1091 | 70 | 69° | 74.25° |
| 58cm | 580 | 559 | 852 | 154 | 645 | 394 | 445 | 1110 | 70 | 69° | 74° |
| 60cm | 600 | 584 | 874 | 175 | 664 | 406 | 445 | 1129 | 70 | 69° | 73.75° |
Bottom bracket height
Roughly 305mm off the ground. Salsa doesn't publish this directly — we derive it from their BB drop and a typical 75cm tire diameter, so treat it as indicative rather than exact. It changes with the tire you fit. Lower means more stable and more pedal strikes; higher means the opposite.
Source — Salsa's own geometry chart: https://www.salsacycles.com/products/2026-cutthroat-c-frameset — checked 2026-08-16. A dash means the figure isn't published; we leave it blank rather than estimate.
Note: Current V2 geometry. Manufacturer copy elsewhere conflicts on whether 54cm has 2 or 3 main-triangle bottle positions; use frame-spec line for fit data.
How the Cutthroat compares
Against the frames people actually cross-shop it with — both charts held together, on the specs that decide what the bike carries.
Questions people ask about this frame
Answered from what Salsa publish. Where they publish nothing, that is what it says.
Does the Cutthroat take fork cargo cages?
Yes — 2 cages. Salsa publish cargo-cage mounts on the fork, one set per leg.
What is the widest tyre the Cutthroat takes?
61mm 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 Cutthroat?
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 560mm effective top tube and 508mm seat tube. 16 fit.
Frame bag fit is calculated from Salsa'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.