Jamis DXT A1 2025
Bike details
Key information split into simple groups.
Bike summary
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Frame Aluminum
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Travel Front 75mm
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Fork Suntour NVX
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Groupset microSHIFT Advent
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Suspension Hardtail
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Drivetrain 1 × 9
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Brakes Tektro Hydraulic Disc
Parts list
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 11-42T
Crank
SAMOX Alloy forged crank with 32T steel chainring(BCD104). 170mm (15-17”), 175mm (19-23”)
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-M275/276 hydraulic disc brakes with 160mm rotors and Tektro brake levers. 15” M276 (83mm reach); 17- 23” M275 (88mm reach)
Cockpit
Stem
Jamis Trekking, 3D forged alloy, 10 ? rise, 90mm (15-17”), 105mm (19/21/23”)
Handlebar
Jamis Riser bar, 6061 double-butted aluminum, 31.8 x 20mm rise x 10 ? sweep x 640mm (15”), 660mm (17-23”)
Grips
Anatomic double density kraton grip with gel
Headset
FSA Internal cup, threadless 1 1/8”
Seat
Saddle
Selle Royal Vivo ERGO
Seatpost
Jamis alloy micro-adjust, 31.6 x 350mm alloy clamp with QR seatpin
Fit data
Numbers for sizing and ride feel.
| Size | 15" | 17" | 19" | 21" | 23" |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.61 mm | 1.616 mm | 1.622 mm | 1.625 mm | 1.628 mm |
| Front Center | 638 mm | 649 mm | 660 mm | 669 mm | 679 mm |
| Rake | 40 mm | 40 mm | 40 mm | 40 mm | 40 mm |
| Trail | 88 mm | 86 mm | 86 mm | 88 mm | 88 mm |
| Stack | 636 mm | 648 mm | 660 mm | 671 mm | 682 mm |
| Reach | 395 mm | 401 mm | 407 mm | 413 mm | 419 mm |
| Top Tube Length | 583 mm | 593 mm | 603 mm | 612 mm | 622 mm |
| Seat Tube Angle | 73 ° | 73 ° | 73 ° | 73 ° | 73 ° |
| Seat Tube Length | 381 mm | 432 mm | 483 mm | 533 mm | 584 mm |
| Head Tube Angle | 70.5 ° | 70.5 ° | 70.5 ° | 70.5 ° | 70.5 ° |
| Head Tube Length | 127 mm | 140 mm | 155 mm | 167 mm | 179 mm |
| Chainstay Length | 440 mm | 440 mm | 445 mm | 445 mm | 450 mm |
| Wheelbase | 1071 mm | 1082 mm | 1099 mm | 1108 mm | 1123 mm |
| Bottom Bracket Drop | 60 mm | 60 mm | 57 mm | 57 mm | 57 mm |
| Standover Height | 748 mm | 784 mm | 811 mm | 848 mm | 883 mm |
| Wheels | 700 | 700 | 700 | 700 | 700 |
