Jamis DXT A1 Step-Over Frame 2025
2025 Urban
Estimate price |
999$
Weight | 13.49 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Travel Front 75mm -
Fork Suntour NVX
-
Groupset microSHIFT Advent -
Suspension Hardtail -
Drivetrain 1 × 9 -
Brakes Tektro HD Hydraulic Disc
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Size Specific Design Triple-butted 6061 aluminum with fast back rear triangle, 1 1/8” head tube, internal cable routing, oval chain stays with post mount disc brake with kickstand mount, 34.9mm seat tube, replaceable derailleur hanger and fender/rack eyelets.
Suspension Fork
SR/Suntour NVX HLO, aluminum lowers, coil spring, 28mm stanchions, 1-1/8” steerer, aluminum crown, hydraulic lock out, 75mm travel
Drivetrain
Rear Derailleur
MicroShift Advent Active Motion RD+ with clutch real deraillier
Shift Levers
MicroShift Advent Xpress shifter with bearing, 9-speed
Cassette
MicroShift 9-speed, 11-42T
Crank
SAMOX Alloy forged crank with 32T steel chainring(BCD104), 170mm
Bottom Bracket
FSA sealed cartridge, 68 x 110.5mm
Chain
KMC Z9
Pedals
Full alloy platform, toe clip attachable
Wheels
Rims
WTB STX i23 TCS (UST Tubeless Compliant System) disc rims, 32H, Joytec disc hubs and 14g stainless steel spokes
Tires
CST Dual Sport Tire, 700 x 42c
Brakes
Brakes
Tektro HD-276 hydraulic disc brakes with 83mm reach, 160mm rotors and Tektro brake levers.
Cockpit
Stem
Jamis Trekking, 3D forged alloy, 10 ? rise, 90mm
Handlebar
Jamis Riser bar, 6061 double-butted aluminum, 31.8 x 20mm rise x 10 ? sweep x 640mm (14-18”), 660mm (20”)
Grips
Anatomic double density kraton grip with gel
Headset
FSA Internal cup, threadless 1 1/8”
Seat
Saddle
Selle Royal Vivo ERGO Women’s
Seatpost
Jamis alloy micro-adjust, 31.6 x 350mm alloy clamp with QR seatpin
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | 14" | 18" | 20" |
|---|---|---|---|
| Stack Reach Ratio | 1.681 mm | 1.684 mm | 1.688 mm |
| Front Center | 624 mm | 624 mm | 620 mm |
| Rake | 40 mm | 40 mm | 40 mm |
| Trail | 90 mm | 88 mm | 81 mm |
| Stack | 632 mm | 640 mm | 648 mm |
| Reach | 376 mm | 380 mm | 384 mm |
| Top Tube Length | 557 mm | 557 mm | 570 mm |
| Seat Tube Angle | 73.5 ° | 74 ° | 73.5 ° |
| Seat Tube Length | 356 mm | 457 mm | 508 mm |
| Head Tube Angle | 70 ° | 70.5 ° | 71.5 ° |
| Head Tube Length | 125 mm | 131 mm | 135 mm |
| Chainstay Length | 440 mm | 440 mm | 440 mm |
| Wheelbase | 1057 mm | 1057 mm | 1053 mm |
| Bottom Bracket Drop | 60 mm | 60 mm | 60 mm |
| Standover Height | 641 mm | 664 mm | 662 mm |
| Wheels | 700 | 700 | 700 |