Jamis EXPLORER A1 2025
2025 Mountain
Estimate price |
699$
Weight | 15.65 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
Category -
Frame Aluminum -
Travel Front 80mm -
Fork Suntour XCE
-
Groupset Tourney -
Suspension Hardtail -
Drivetrain 3 × 8 -
Brakes Tektro Mechanical Disc
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
6061 TIG-welded aluminum, all-new sport comfort design with upright ride position, replaceable derailleur hanger
Suspension Fork
SR Suntour XCE 27.5”, coil spring, external preload adjustor, 28mm stanchions, aluminum lowers, 80mm travel
Drivetrain
Rear Derailleur
Shimano TX-800 rear, Shimano TY710 31.8mm top swing/ dual pull front
Shift Levers
Shimano EZ-Fire Plus, ST-EF510, 24-speed
Cassette
Shimano HG20, 8-speed, 12-32
Crank
Shimano TY301, 48/38/28T, 170mm with chainguard
Bottom Bracket
Sealed cartridge, 68 x 110.5mm
Chain
KMC Z7
Pedals
Comfort platform with TPE non-slip insert
Wheels
Rims
Double-wall alloy rims, 32H, alloy hubs with QR, 14g stainless steel spokes
Tires
CST – 1918, 27.5 x 2.1
Brakes
Brakes
Tektro forged alloy direct pull brakes with Shimano levers
Cockpit
Stem
Jamis alloy, angle-adjustable, 90mm ext x 150mm quill (14 ?18”) or 110mm ext x 180mm quill (19 ?21”)
Handlebar
Comfort hi-rise, alloy 25.4 x 80mm rise x 15 ? sweep x 640mm
Grips
Kraton comfort
Headset
Internal cup, threaded, 1 1/8”
Seat
Saddle
Jamis Comfort with memory foam, synthetic suede top, burnished side panels and bumper springs
Seatpost
Suspension, alloy micro-adjust, 350mm x 27.2mm, with alloy QR clamp
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | SM | 15" | SM | 17" | SM | 19" | 21" |
|---|---|---|---|---|---|---|---|
| Bottom Bracket Height | 284 mm | 284 mm | 284 mm | 284 mm | 284 mm | 284 mm | 284 mm |
| Front Center | 617 mm | 615 mm | 627 mm | 626 mm | 632 mm | 637 mm | 656 mm |
| Rake | 42 mm | 42 mm | 42 mm | 42 mm | 42 mm | 42 mm | 42 mm |
| Top Tube Length | 555 mm | 565 mm | 577 mm | 587 mm | 594 mm | 598 mm | 617 mm |
| Seat Tube Angle | 72 ° | 71 ° | 71 ° | 71 ° | 71 ° | 71 ° | 71 ° |
| Seat Tube Length | 356 mm | 381 mm | 406 mm | 432 mm | 457 mm | 483 mm | 533 mm |
| Head Tube Angle | 69 ° | 69 ° | 69 ° | 70 ° | 70 ° | 70 ° | 70 ° |
| Head Tube Length | 140 mm | 135 mm | 150 mm | 165 mm | 160 mm | 185 mm | 210 mm |
| Chainstay Length | 450 mm | 450 mm | 450 mm | 450 mm | 450 mm | 450 mm | 450 mm |
| Wheelbase | 1057 mm | 1055 mm | 1067 mm | 1066 mm | 1072 mm | 1077 mm | 1097 mm |
| Bottom Bracket Drop | 71 mm | 71 mm | 71 mm | 71 mm | 71 mm | 71 mm | 71 mm |
| Standover Height | 481 mm | 718 mm | 487 mm | 784 mm | 484 mm | 824 mm | 870 mm |
| Wheels | 27" | 27" | 27" | 27" | 27" | 27" | 27" |