MSRP | $429 | $700 |
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Where to Buy | — $1 At | $700 At Specialized |
Category | Comfort | Comfort |
Weight | 30.5 lbs | 29.8 lbs |
Aluminum | Aluminum | |
Fork | Steel | Steel |
Wheels | Aluminum | Aluminum |
Wheel Size | 650b | 650b |
Brakes | Rim | Mechanical Disc |
Groupset | Tourney | microSHIFT, microSHIFT Mezzo |
Drivetrain | 3 × 7 | 1 × 7 |
Brand Site | ||
Summary | The Jamis EXPLORER STEP-THRU is a 650b aluminum frame comfort bike with mid-range components and rim brakes. |
Frame | 6061 TIG-welded aluminum, all-new sport comfort design with upright ride position, replaceable derailleur hanger, center-mount kickstand bracket | Specialized A1 Premium Aluminum, Ground Control Positioning, formed tubes, post-mount disc, fender/rack mounts |
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Fork | Hi-tensile steel unicrown, radius blades with dropout eyelets | Steel formed tubes, post-mount disc, fender/rack mounts |
Bottom Bracket | Sealed cartridge, 68 x 110.5mm | 68mm, square taper, 124.5mm length |
Headset | Internal cup, threaded, 1 1/8” | |
Stem | Jamis alloy, angle-adjustable, 90mm ext x 150mm quill (14–18") or 110mm ext x 180mm quill (19–21”) | 3D-forged alloy, 31.8mm, 7-degree rise |
Handlebar | Hi-rise comfort, 15D sweep x 80mm rise x 640mm wide | Specialized Roll, 6061 alloy, Double butted, 15-degree backsweep, 136mm rise, 31.8mm |
Saddle | Jamis Comfort with extra thick padding, synthetic suede top, burnished side panels and bumper springs | Specialized Body Geometry Comfort Gel |
Seatpost | Alloy micro-adjust, 350mm x 27.2mm, with alloy QR clamp | Alloy, 2-bolt clamp, 27.2mm |
Pedals | Comfort platform with TPE non-slip insert | Specialized Body Geometry Fitness, platform, plastic |
Grips | Kraton comfort | Slip-on, Closed End Grips |
Rear Derailleur | Shimano TY300 | microSHIFT RD-M26S, 7-speed |
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Front Derailleur | TY510 top swing/dual pull | |
Crank | Shimano FC-TY501, 48/38/28T, 170mm with chainguard | Forged aluminum arms, 3-piece, 7 speed, 42T |
Shifters | Shimano Revoshift, SL-RS35, 21-speed | microSHIFT TS39 Trigger shift, 7-speed |
Cassette | Shimano freewheel 7-speed, 14-34 | SunRace, 7-Speed, 11-34t |
Chain | KMC Z7 | KMC Z7, 7-speed w/ Missing Link™ |
Brakes | ProMax alloy direct pull brakes with Tektro 530-RS levers | Front: Radius CX7, mechanical disc, 160mm, Rear: Radius CX7, mechanical disc, 160mm |
Rims | Alloy 36H rims, Formula alloy hubs, QR front and rear, 14g stainless steel spokes | 650b disc, double-wall alloy, pinned, 32h |
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Spokes | Stainless, 14g | |
Front Hub | Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h | |
Rear Hub | Alloy, 6-bolt disc, 7-speed freehub, loose ball bearing, quick-release, 32h | |
Tires | CST - 1918, 27.5 x 2.1 | Front: Nimbus II Sport, 650b x 2.3", Rear: Nimbus II Sport, 650b x 2.3" |