The Sunny SF-RB4855SMART provides a step-through design, adjustable seat, and quiet belt-drive system. Its console and app integration allow users to select from various resistance levels and programs to match their preferred cycling style.
Electro-magnetic resistance (16 levels)
Lets you fine-tune how challenging your ride feels, at your pace, with precise digital control for smooth transitions.
Quiet, belt-drive system
Operates with minimal noise and little upkeep, so your focus stays on pedaling—not the machine.
Easy step-through frame & adjustable seat
A low-access design plus a sliding, padded seat makes getting on and off hassle-free and allows riders of different heights to find their fit.
Smart console with SunnyFit app
Bluetooth connectivity allows pairing with the SunnyFit app for access to guided sessions, scenic routes, and real-time tracking.
Convenient pacing tools
A tablet/phone tray, water bottle holder, and seat-level pulse sensors make tracking your ride seamless and your essentials within reach.
Mobile design
Built-in transport wheels let you glide it from room to room—no heavy lifting needed.
This bike includes a user-friendly console with:
Clear display of time, speed, distance, RPM, calories, heart rate, and wattage
24 preset programs for varied riding - including BMI, target heart rate, and wattage tracking
With Bluetooth connectivity for use with the SunnyFit app, which provides guided sessions, scenic routes, and performance tracking.
Sliding into place is easy thanks to the step-through frame. Adjust the seat until your legs reach the pedals just right, secure your feet with the straps, and start your ride. The belt-drive operates quietly, and the resistance adjusts smoothly when the intensity is changed.
Sunny SF-RB4855SMART Recumbent Bike
User Manual and Assembly Tools
All required hardware
Resistance levels: 16 (electro-magnetic)
Max user weight: 300 lbs
Product weight: 93.4 lb
Dimensions: ~60.6″ L × 25.2″ W × 44.1″ H
Q: Is the assembly complicated?
A: Tools are included, and it can be handled at your own pace. Having a second person helps handle heavier parts.
Q: Can different users adjust the bike easily?
A: Yes—adjust the seat forward or back effortlessly to accommodate different leg lengths. Comfort and mechanics stay smooth.
Q: What makes this different from a non-smart recumbent?
A: This model includes programmable resistance, integrated performance tracking, and Bluetooth connectivity for pairing with the SunnyFit app.
Q: Is it easy to move around my home?
A: Yes. Lift from the back, roll it on its transport wheels, and place it wherever you like.
Structural Frame: 3 years
Treadmill Motor: 1 year
Other Parts & Components: 180 days
Free Shipping: We offer free shipping on all outbound orders.
Return shipping costs are the customer’s responsibility unless the item is defective or incorrect. Please view our Return Policy for more information
Delivery Area: We currently ship within the United States
Processing Time: Orders are processed within 1-3 business days, Monday to Friday.
Cut-off Time: Orders placed before 5:00 pm Central Standard Time begin processing time the same business day. Orders after will begin processing the next business day
No Shipping Days: Orders are not processed on weekends or public holidays.
Estimated Shipping Times: Orders typically arrive within 1-7 business days (Monday-Friday) after processing, depending on the destination.
For Products ordered under 150lbs
Delivered to your doorstep or driveway
Transit time: 1–7 business days
Tracking number provided
For large/heavy items (150+ lbs)
Delivered curbside with a liftgate
Appointment and adult signature required
Products are not brought inside or upstairs
Orders are processed within 1–3 business days (Monday–Friday).
Orders placed before 5:00 pm CST begin processed the same business day; those placed after begin processing the next business day.
Orders are not processed on weekends or public holidays.
Orders arrive within 1–7 business days (Monday–Friday) after processing, depending on destination.
Total timeline: 2–10 business days from the date you place your order.
For full details, please see our Shipping Policy
Return Period: 30 days from delivery date.
Refund Processing: Within 10 business days from receipt.
Return Shipping: Covered by the customer unless the product is defective or incorrect.
Restocking Fees: We do not charge restocking fees.
For full details, please see our Return & Refund Policy
Shipping is available to all 50 U.S. states, including Alaska and Hawaii. We do not ship International
We accept the following methods:
For details, please see our Payment Policy
You can reach our customer service team
sales@primal-fitness.shop
+1 (615) 568-8943
Mon-Sat: 9AM - 5PM CST
Live Chat: On the bottom right of your screen, you can reach out to one of our support agents during business hours
The Sunny SF-RB4855SMART provides a step-through design, adjustable seat, and quiet belt-drive system. Its console and app integration allow users to select from various resistance levels and programs to match their preferred cycling style.
Electro-magnetic resistance (16 levels)
Lets you fine-tune how challenging your ride feels, at your pace, with precise digital control for smooth transitions.
Quiet, belt-drive system
Operates with minimal noise and little upkeep, so your focus stays on pedaling—not the machine.
Easy step-through frame & adjustable seat
A low-access design plus a sliding, padded seat makes getting on and off hassle-free and allows riders of different heights to find their fit.
Smart console with SunnyFit app
Bluetooth connectivity allows pairing with the SunnyFit app for access to guided sessions, scenic routes, and real-time tracking.
Convenient pacing tools
A tablet/phone tray, water bottle holder, and seat-level pulse sensors make tracking your ride seamless and your essentials within reach.
Mobile design
Built-in transport wheels let you glide it from room to room—no heavy lifting needed.
This bike includes a user-friendly console with:
Clear display of time, speed, distance, RPM, calories, heart rate, and wattage
24 preset programs for varied riding - including BMI, target heart rate, and wattage tracking
With Bluetooth connectivity for use with the SunnyFit app, which provides guided sessions, scenic routes, and performance tracking.
Sliding into place is easy thanks to the step-through frame. Adjust the seat until your legs reach the pedals just right, secure your feet with the straps, and start your ride. The belt-drive operates quietly, and the resistance adjusts smoothly when the intensity is changed.
Sunny SF-RB4855SMART Recumbent Bike
User Manual and Assembly Tools
All required hardware
Resistance levels: 16 (electro-magnetic)
Max user weight: 300 lbs
Product weight: 93.4 lb
Dimensions: ~60.6″ L × 25.2″ W × 44.1″ H
Q: Is the assembly complicated?
A: Tools are included, and it can be handled at your own pace. Having a second person helps handle heavier parts.
Q: Can different users adjust the bike easily?
A: Yes—adjust the seat forward or back effortlessly to accommodate different leg lengths. Comfort and mechanics stay smooth.
Q: What makes this different from a non-smart recumbent?
A: This model includes programmable resistance, integrated performance tracking, and Bluetooth connectivity for pairing with the SunnyFit app.
Q: Is it easy to move around my home?
A: Yes. Lift from the back, roll it on its transport wheels, and place it wherever you like.
Structural Frame: 3 years
Treadmill Motor: 1 year
Other Parts & Components: 180 days
Free Shipping: We offer free shipping on all outbound orders.
Return shipping costs are the customer’s responsibility unless the item is defective or incorrect. Please view our Return Policy for more information
Delivery Area: We currently ship within the United States
Processing Time: Orders are processed within 1-3 business days, Monday to Friday.
Cut-off Time: Orders placed before 5:00 pm Central Standard Time begin processing time the same business day. Orders after will begin processing the next business day
No Shipping Days: Orders are not processed on weekends or public holidays.
Estimated Shipping Times: Orders typically arrive within 1-7 business days (Monday-Friday) after processing, depending on the destination.
For Products ordered under 150lbs
Delivered to your doorstep or driveway
Transit time: 1–7 business days
Tracking number provided
For large/heavy items (150+ lbs)
Delivered curbside with a liftgate
Appointment and adult signature required
Products are not brought inside or upstairs
