Marin Alpine Trail XR

2025 MountainEnduro Manufacturer page

Marin Alpine Trail XR, color Silver Black

Travel: 170 / 160 mm Fork / rear shock
Wheels: 27.5″
Drivetrain: 1 × 12 32t / 10–52t
Gear range: 520%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 160–169
MD 166–179
LG 176–189
XL 187–193

Components

20 of 22 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

All New Series 4 6061 Aluminum, 29” Wheels, 160mm Travel MultiTrac LT Suspension Platform, Integrated Downtube Storage, Adjustable Headset & CS Length/BB Height, 148x12mm Boost Thru- Axle, 73mm Threaded BB w/ ISCG05 Tabs Not identified

Suspension

2 parts

Drivetrain

6 parts

Brakes

2 parts

Brake levers
- SRAM DB8
Brakes
- SRAM DB8

Wheels and tires

5 parts

Front hub
- Formula
DC-711
Rear hub
- Formula
DCL-3482
Rims
- Marin
Spokes

14g Black Stainless Steel Not identified
Tires
- Maxxis Assegai

Cockpit and contact points

7 parts

Grips
- Marin
Handlebar
- Marin
Headset
- FSA
Pedals

None
Saddle
- Marin
Seatpost
- Tranz-X
Stem
- Marin

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 460mm

Stack 634mm

Wheelbase 1248mm

Head angle 63.5°

Seat angle 79.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 27.5″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	430	460	490	520
Stackmm	620	634	643	647
Top tube lengthmm	556	592	626	659
Seat tube lengthmm	400	420	430	460
Head tube lengthmm	100	115	125	130
Head tube angle	63.5°	63.5°	63.5°	63.5°
Seat tube angle	79°	79°	79°	79°
Chainstay lengthmm	435	435	435	435
Wheelbasemm	1211	1248	1283	1318
Front centermm	777	814	849	884
Bottom bracket dropmm	24	24	24	24
Bottom bracket heightmm	352	352	352	352
Standover heightmm	683	690	695	698
Fork rakemm	44	44	44	44
Trailmm	128	128	127	125
Stack/reach ratio	1.44	1.38	1.31	1.24
Suspension and parts
Crank lengthmm	160	160	160	160
Handlebar widthmm	780	780	780	780
Stem lengthmm	35	35	35	35

Not published by the manufacturer: Front travel, Rear travel, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum

Suspension

Suspension configuration: Full suspension
Front travel: 170 mm
Rear travel: 160 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 52
Lowest gear: 16.9 in
Highest gear: 88.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Rear shock spring: Coil
Tire width: 2.5″
Wheel material: Aluminum
Wheel size: 27.5″

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

170 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,419 bicycles with this information
Coverage: 97.5% of the class

Rear travel

160 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,106 bicycles with this information
Coverage: 76.0% of the class

Shifting

Mechanical

477 of 1,455 bicycles with this information use electronic shifting.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,455 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.5 km/h
Highest gear: 33.7 km/h

Total gear range 520%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 16.9–88.0 gear inches

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds
Specification	This bicycle Marin Alpine Trail XR	Marin Alpine Trail 1	Marin Alpine Trail XR AXS
Drivetrain
Largest sprocket	52	51	52
Lowest gear	16.9 in	17.3 in	16.9 in
Wheels
Wheel configuration	Same size	Different sizes	Same size
Cockpit
Shifting	Mechanical	Mechanical	Electronic
Derailleur hanger	Not informed	Not informed	UDH
Other specifications
Rear shock spring	Coil	Not informed	Coil
Tire width	2.5″	2.6″	2.5″
Wheel size	27.5″	29″ / 27.5″	27.5″