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Lifespan S4 Indoor Bike

This solid, reliable indoor cycling bike provides excellent performance for even the most intense bike rides. Commercial quality components and construction provide long-lasting durability.

Fully adjustable seat and handlebars on the S4 Indoor Bike allow perfect sizing for proper riding position. Leather resistance knob is easy to use as you simulate climbing hills and riding through valleys. Use our seat and pedals or interchange with your own. Backed by a commercial warranty.

LifeSpan S4 Indoor Bike Specifications

  • Flywheel:44 lbs.
  • Tension Control:Micro-Adjustment Knob, Felt Pad Friction Control
  • Seat:Standard Mount, High
    Density Memory Foam
  • Adjustments:Height and Fore/Aft
  • Handlebars:Multi-Position,PVC-Dipped
  • Pedals: Alloy with Sealed Bearings
  • Transport:Front-Mounted Wheels
  • Footpads: Four, Adjustable Leveling
  • Product Dimensions :48" x 48" x 26"
  • Product Weight:145 lbs.


  • Frame:5 Years
  • Wear Items:1 Year
  • Parts:2 Year
  • Labor:1 Year

LifeSpan S4 Indoor Bike Features

Fully-Adjustable Seat and Handlebars

Adjust the S4 indoor bike for a perfect fit and comfortable ride. Both the seat and handlebars adjust up, down, forward and backward in any combination. Raise and extend the handlebars, lower the seat or minimize the distance between the seat and handlebars to get a precise fit that will result in an injury-free, effective workout.

Commercial Quality

The 44 lb. balanced flywheel and heavy-gauge, steel frame on the S4 indoor cycling bike provides superior performance for intense riding. Poly-V drive belt and leather resistance knob with push brake combine to provide a quiet ride with smooth transitions.