Jamis DXT Comp STEP-OVER

2019 UrbanFitness Manufacturer page

Last known price: $779

Prices shown first for United States
Fork travel: 75 mm
Wheels: 700c
Drivetrain: 3 × 9 26–48t / 11–32t
Gear range: 537%
Weight: 13.49 kg 29.7 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

15 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

Triple-butted 6061 aluminum with hydro-formed top and down tube, 1 1/8” head tube, new designed taper gauge “S” bend stays, seat stays and disc brake mounts, 34.9mm seat tube, replaceable derailleur hanger and fender/rack eyelets Not identified

Suspension

1 part

Fork
- SR Suntour

Drivetrain

7 parts

Bottom bracket
- FSA
Cassette
- Shimano CS-HG201 9 speeds 11–32t
CS-HG201
Chain
- KMC Z9 9 speeds
Crankset
- Shimano Altus FC-M371 9 speeds 48/36/26t
FC-M371
Front derailleur
- Shimano Altus FD-M370 3 speeds
FD-M370
Rear derailleur
- Shimano RD-M2000
RD-M2000
Shifters
- Shimano Altus SL-M2000
SL-M2000

Brakes

1 part

Brakes
- Tektro HD-M275 / HD-M276
HD-M275HD-M276

Wheels and tires

2 parts

Cockpit and contact points

7 parts

Grips

Anatomic double density kraton grip with gel Not identified
Handlebar
- Jamis
Headset

Internal cup, 1 1/8” Not identified
Pedals

Full alloy platform, toe clip attachable Not identified
Saddle
- Selle Royal
Seatpost
- Jamis
Stem
- Jamis

Sizes and geometry

3 sizes Open in the geometry plotter

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

Size 18"

Table

Reach 371mm

Stack 585mm

Wheelbase 1029mm

Head angle 71.0°

Seat angle 74.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 3 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	356	371	380
Stackmm	583	585	603
Top tube lengthmm	520	540	560
Seat tube lengthmm	356	457	508
Head tube lengthmm	120	120	135
Head tube angle	70.5°	71°	72°
Seat tube angle	74.5°	74°	73.5°
Chainstay lengthmm	435	435	435
Wheelbasemm	1019	1029	1034
Front centermm	590	600	605
Bottom bracket dropmm	55	55	55
Standover heightmm	621	635	639
Fork rakemm	42	42	42
Trailmm	79	76	69
Stack/reach ratio	1.64	1.58	1.59

Not published by the manufacturer: Bottom bracket height, 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: 13.49 kg

29.7 lb

Suspension

Suspension configuration: Hardtail
Front travel: 75 mm

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 26
Largest chainring: 48
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 32
Lowest gear: 23.6 in
Highest gear: 126.6 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: 42c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

2 measures

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

Lowest gear

23.6 gear inches

This value is within the central range for this class.

Cohort: Urban / Fitness Model year: 2019
Sample: 245 bicycles with this information
Coverage: 93.8% of the class

Highest gear

126.6 gear inches

This value is within the central range for this class.

Cohort: Urban / Fitness Model year: 2019
Sample: 245 bicycles with this information
Coverage: 93.8% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.0 km/h
Highest gear: 48.5 km/h

Total gear range 537%

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: 23.6–126.6 gear inches
Class reference (p10–p90): 21.8–131.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Fitness Model year: 2019
Lowest gear: 245 bicycles with this information, 93.8% of the class
Highest gear: 245 bicycles with this information, 93.8% of the class

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 2019 builds

Differences across 2019 builds
Specification	This bicycle Jamis DXT Comp STEP-OVER	Jamis DXT	Jamis DXT Comp	Jamis DXT Sport	Jamis DXT Sport STEP-OVER	Jamis DXT STEP-OVER
Frame
Intended fit	Unisex	Unisex	Unisex	Unisex	womens	Unisex
Bicycle weight	13.49 kg	14.51 kg	13.61 kg	14.17 kg	14.06 kg	14.4 kg
Drivetrain
Smallest chainring	26	28	26	28	28	28
Rear sprockets	9	7	9	8	8	7
Smallest sprocket	11	14	11	11	11	14
Largest sprocket	32	34	32	32	32	34
Lowest gear	23.6 in	23.9 in	23.6 in	25.4 in	25.4 in	23.9 in
Highest gear	126.6 in	99.4 in	126.6 in	126.6 in	126.6 in	99.4 in
Brakes
Brake type	Hydraulic disc	Mechanical disc	Hydraulic disc	Hydraulic disc	Hydraulic disc	Mechanical disc