The Schwinn Sierra IG3 is a mid-cost three speed bike, made for casual riding on paved and dirt paths.

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The Schwinn Sierra IG3 is a mid-cost three speed bike, made for casual riding on paved and dirt paths. This model is a step up from the lower cost Sierra 21 model in a couple of key ways. First, this model is equipped with an internal gear hub, as opposed to a derailleur system. Besides being generally more reliable, the internal gear hub system requires less maintenance. Another difference between the two models is that the IG3 has a SR Suntour NEX 4110 suspension fork, as opposed to a straight-up rigid fork. The suspension-style fork is better for shock absorption. A third difference between the Sierra IG3 and the Sierra 21 is that the Sierra IG3 has double wall rims, which contribute lightweight durability to the bike. All of that being said, the Sierra 21 has more speeds (with twenty-one). One feature that the models have in common is a comfort-oriented geometry in the lightweight frame.

  • Color: Deep Silver
  • Small size
  • Frame: Schwinn N'Litened Aluminum w/ Comfort-Tuned 68 deg. geometry
  • SR Suntour NEX 4110 suspension fork, 63mm travel w/ preload
  • Crank: Schwinn "S" Logo forged alloy, 40t ring w/ dual chainguard
  • Bottom Bracket: Cartridge JIS taper
  • Shimano Revo twist shift
  • Chain: KMC Z-410
  • 21 Speed
  • Schwinn approved double wall alloy 32 hole rims
  • Hubs: Shimano Nexus 3-speed rear, KT alloy sealed mechanism QR front
  • Spokes: 14 G stainless
  • Tires: Schwinn Approved city tread 26” x 1.95
  • Pedals: Nylon comfort platform w/ reflectors
  • Brakes: Linear pull brake w/ 60mm pads
  • Brake Levers: Alloy w/ reach adjuster
  • Handlebar: 80mm rise, 30 degree bend
  • Stem: Alloy 30 deg rise comfort, 80mm extension, 25.4 quill
  • Headset: 1 1/8" threaded
  • Grips: Schwinn Bio-Tuned Ergonomic dual-density w/ fabric cover
  • Saddle: Comfort Tuned Plus two-tone w/Schwinn Super Soft foam and coil spring rails
  • Seatpost: Alloy pillar, 26.8
  • Alloy QR seat binder w/ 'S" Logo end boot
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