Marin Pine Mountain 1Geometry & Bikepacking Bag Fit2024
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.
432mm chainstays, about the median for the 64 current frames here. Bottom bracket drop 60mm, 10mm less than the 70mm median. Marin publishes no fork cargo mounts, and no frame bottle positions are published. Marin publishes no rear rack answer, which is not the same as no — but it is not something to buy a rack on.
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 Marin publishes it.
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| S | 578.9 | 370 | 682 | 110 | 641.2 | 425 | 432 | 1172.4 | 60 | 65° | 76.5° |
| M | 605 | 395 | 704.5 | 115 | 645.7 | 450 | 432 | 1199.5 | 60 | 65° | 76.5° |
| L | 632.2 | 430 | 737.4 | 125 | 654.8 | 475 | 432 | 1228.7 | 60 | 65° | 76.5° |
| XL | 668.4 | 475 | 777.8 | 130 | — | 510 | 432 | 1265.8 | 60 | 65° | 76.5° |
Bottom bracket height
Roughly 315mm off the ground. Marindoesn'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 — Marin's own geometry chart: https://marinbikes.com/products/2024-pine-mountain-1 — checked 2026-08-18. A dash means the figure isn't published; we leave it blank rather than estimate.
Note: Geometry from Marin’s 2024 Pine Mountain 1 chart. XL stack is left blank: Marin publishes 559.3mm, which is 95mm below the L and contradicts its own XL reach, effective top tube and seat angle by 24mm. The other three sizes reconcile to within 0.04mm. Frame-bag fit for the XL is answered from reach and effective top tube only.
Which frame bags fit
Every frame bag we track, checked against this frame's published geometry. Pick your size.
Checking 19 frame bags against a 632.2mm effective top tube and 430mm seat tube. 18 fit.
Read these as conservative. This size has a steeply sloping top tube — the seat tube is only 68% of the effective top tube. Bag makers publish a minimum seat tube length assuming a roughly level top tube, so on a frame like this the comparison understates how much room you actually have. The front triangle here is about 1322 cm², which is the number that actually decides what fits. Several bags marked unlikely below will physically fit. Half-frame bags don't depend on seat tube length at all.
Frame bag fit is calculated from Marin'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.