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2012 Jamis Commuter 1 Step-Over

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Overview

Brand
Jamis
Model family
Commuter
Model year
2012
Category
Hybrid · commuter
Frame material
steel
Sizes
14 W, 18 W
Wheel size
700c

Drivetrain

Speeds
7
Groupset
Shimano Altus
Chainrings
1
Electronic
false

Build

Fork
Hi-tensile steel unicrown, radiused blades, double dropout eyelets
Stem
Jamis alloy hi-rise, quill type, 35º x 80mm with 180mm quill
Tires
CST Marathon/Tour with silver safety stripe, 700 x 32c
Brakes
Linear pull brakes with Tektro CL330 ergonomic designed alloy brake levers
Saddle
Jamis Metro Sport with synthetic suede cover, burnished sides and bumper springs with satin steel rails, gender specific
Wheels
Alex R-1000 alloy rims, 36H, Formula alloy hubs with QR and 14g stainless steel spokes
Cassette
Shimano MF-TZ31 7-Speed 14-34T
Crankset
Forged alloy crank, single 44T chainring, 170mm, with pants guard
Seatpost
Jamis alloy micro-adjust, 25.4 x 350mm with alloy clamp and QR seatpinin
Shifters
Shimano Revo-Shift SL-RS43, 7-Speed
Handlebar
Jamis ARC, 6061 aluminum, 25.4 x 27º sweep x 580mm
Weight kg
14.51
Rear derailleur
Shimano Altus, RD-M310

Geometry

14 W
Chainstay mm: 445; Wheelbase mm: 1041; Head angle deg: 71; Seat angle deg: 74
18 W
Chainstay mm: 445; Wheelbase mm: 1047; Head angle deg: 71; Seat angle deg: 73.5

Sizes in inches (W = women's or step-through sizes). Colors: Sangria or Sage. Also listed: headset Water-resistant sealed mechanism, threaded, 1 1/8"; bottom bracket VP sealed 3RB bolt type axle, 35x52x39, 126mm; pedals Comfort platform with TPE non-slip insert; chain KMC Z7; grips Anatomic double density kraton grip with end plug; extras Lightweight polycarbonate fenders, Jamis carrier with Jamis logo strap and micro bell. Frame: Hi-Tensile steel frame, sloping design, rack/fender mounts, forged dropouts with double eyelets. Jamis served one combined spec sheet for this bike and the Commuter 1; this entry keeps only its own sizes and colors.

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