Jamis Trail X A2

2026 MountainCross-country Manufacturer page

Last known price: $729

Prices shown first for United States
Fork travel: 100 mm
Wheels: 27.5″
Drivetrain: 2 × 8 22–36t / 11–32t
Gear range: 476%
Weight: 14.51 kg 32.0 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

13 of 19 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

6061 aluminum main tubes, over-sized seat tube, zero-stack head tube, over-sized stays, replaceable derailleur hanger Not identified

Suspension

1 part

Fork
- SR Suntour XCE28

Drivetrain

7 parts

Bottom bracket

Sealed cartridge Not identified
Cassette
- Shimano CS-HG31 8 speeds 11–32t
CS-HG31
Chain
- KMC Z8.3 8 speeds
Crankset

Forged Alloy, 36/22T Not identified
Front derailleur
- Shimano Altus
Rear derailleur
- Shimano Tourney
Shifters
- Shimano ST-EF505
ST-EF505

Brakes

1 part

Brakes
- Shimano BR-MT200
BR-MT200

Wheels and tires

2 parts

Cockpit and contact points

7 parts

Grips

Kraton Not identified
Handlebar
- Jamis
Headset

Zero-stack internal cup, 8mm cone spacer Not identified
Pedals

MTB platform, hi-impact resin Not identified
Saddle
- Jamis
Seatpost
- Jamis
Stem
- Jamis

Sizes and geometry

5 sizes Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 17"

Table

Geometry diagram unavailable

The drawing needs reach and stack, which the manufacturer did not publish. Available facts remain in the table.

Size

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Top tube lengthmm	555	585	610	635	660
Seat tube lengthmm	330	381	432	483	533
Head tube lengthmm	95	100	115	130	140
Head tube angle	68.5°	68.5°	68.5°	68.5°	68.5°
Seat tube angle	74°	74°	74°	74°	74°
Chainstay lengthmm	435	435	435	435	435
Wheelbasemm	1075	1105	1132	1158	1184
Front centermm	645	675	702	728	754
Bottom bracket dropmm	50	50	50	50	50
Bottom bracket heightmm	305	305	305	305	305
Standover heightmm	700	726	762	797	831

Not published by the manufacturer: Reach, Stack, Fork rake, Trail, Stack/reach ratio, Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Aluminum
Bicycle weight: 14.51 kg

32.0 lb

Suspension

Suspension configuration: Hardtail
Front travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 22
Largest chainring: 36
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 32
Lowest gear: 18.9 in
Highest gear: 90.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Coil
Tire width: 2.25″
Wheel material: Aluminum
Wheel size: 27.5″

Technical analysis

2 measures

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

Front travel

100 mm

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2026
Sample: 1,209 bicycles with this information
Coverage: 90.0% of the class

Shifting

Mechanical

156 of 1,318 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2026
Sample: 1,318 bicycles with this information
Coverage: 98.2% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.2 km/h
Highest gear: 34.5 km/h

Total gear range 476%

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: 18.9–90.0 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 2026 builds
Specification	This bicycle Jamis Trail X A2	Jamis Trail X A1	Jamis Trail XR
Frame
Frame material	Aluminum	Aluminum	Steel
Fork material	Aluminum	Aluminum	Steel
Bicycle weight	14.51 kg	14.29 kg	14.4 kg
Suspension
Suspension configuration	Hardtail	Hardtail	Rigid
Front travel	100 mm	100 mm	Not informed
Drivetrain
Front chainrings	2	1	3
Smallest chainring	22	32	24
Largest chainring	36	32	42
Rear sprockets	8	9	7
Smallest sprocket	11	11	13
Largest sprocket	32	42	28
Lowest gear	18.9 in	21.0 in	22.3 in
Highest gear	90.0 in	80.0 in	84.0 in
Brakes
Brake type	Hydraulic disc	Hydraulic disc	Rim brake
Other specifications
Fork spring	Coil	Coil	Not informed
Suspension	Hardtail	Hardtail	Rigid
Tire width	2.25″	2.25″	1.95″
Wheel size	27.5″	27.5″	26″