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Sunny Health & Fitness
Sunny Health & Fitness

Sunny Health & Fitness SF-RB4880 Folding Recumbent Bike

3.6 / 5 editorial rating

A folding semi-recumbent bike with eight magnetic levels and a backrest, combining seated comfort with closet-friendly storage.

$259 MSRP · ref. May 14, 2026
Check price at Sunny Health & Fitness →

MSRP is a reference figure — live price is on the retailer's site.

Overview

The Sunny Health & Fitness SF-RB4880 is an unusual blend of two budget categories, offering the seated comfort of a recumbent with the storage convenience of a folding frame. The semi-recumbent design places the seat behind the pedals with a padded backrest for lumbar support, easing strain on the lower back during gentle cardio, while the X-style frame folds down so the bike can be slid into a closet or corner when not in use. Resistance is delivered by a quiet magnetic system with eight levels adjusted by a tension knob, silent enough to pair with television viewing and free of the pad wear associated with friction bikes. A small LCD monitor reports time, speed, distance, calories and a contact heart-rate reading from the grips. The seat adjusts to accommodate a range of leg lengths, and large pedals with adjustable straps keep feet planted. This is a light-duty machine intended for easy, low-impact movement rather than demanding training, so the resistance range is limited and the frame suits lighter riders best. There is no connectivity. For shoppers who want a comfortable seated ride that disappears between workouts and costs very little, the folding SF-RB4880 fills a practical, space-conscious niche.

Pros

  • +Folds away for compact storage
  • +Recumbent-style backrest for back support
  • +Quiet eight-level magnetic resistance
  • +Very low price

Cons

  • Light-duty with limited resistance range
  • No app connectivity
  • Best for lighter riders

Full specifications

Exercise Bikes specs

Bike type Recumbent
Resistance Magnetic
Flywheel
Console LCD monitor with HR
Connectivity None
Adjustable seat Yes
Foldable Yes
Max user weight 250 lb

Dimensions & weight

Dimensions (L×W×H) 53" × 24" × 48"
Floor footprint 8.8 sq ft
Product weight 44 lb

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