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Lifespan Fitness SM420 Spin Bike with Automatic Magnetic Resistance

Pre-order — ships 15 July 2026

$539$769Save $230

or 4 interest-free payments of $135 with Afterpay

or 4 interest-free payments of $135 with Zip

100 Day Money Back Guarantee
Price Match Guarantee
5 Years Australian warranty
Fast Australian shipping

Specs At A Glance

ResistanceMagnetic
Flywheel12 kg flywheel
Drive systemBelt Drive
Programs16 Resistance Levels
Max user weight140 kg

Lifespan Fitness SM420 Spin Bike with Automatic Magnetic Resistance Overview

Unleash your cycling potential with the SM-420 Spin Bike featuring Automatic Magnetic Resistance.

This cutting-edge spin bike offers a revolution in your home workout routine. Whether you're a beginner or a seasoned cyclist, this spin bike adapts to your fitness journey, making each session a dynamic and engaging adventure towards your health goals.

Lifespan Fitness SM420 Spin Bike featuring automatic magnetic resistance, adjustable seat, and handlebars in a modern home setting, ideal for indoor cycling workouts.

What's Included with the Lifespan Fitness SM420 Spin Bike

Here's everything included with this Lifespan Fitness SM420 Spin Bike with Automatic Magnetic Resistance.

  • SM-420 Spin Bike
  • Commercial Grade 12kg Flywheel
  • Multifunctional LCD Display
  • Comfort Sports Saddle
  • Toe-Clip Pedals
  • Drink Bottle Holder
  • Transport Wheels and Floor Levellers
  • 5 Year Warranty
  • Device Holder
  • Adjustable Handle Bars
  • 16 levels of Magnetic Resistance
  • 140 kg Max User Weight

Lifespan Fitness SM420 Spin Bike Overview


16 Levels of Automatic Resistance

Experience a tailored workout with the SM-420's impressive 16 levels of automatic resistance. Make adjustments through the multifunctional twist dial and enjoy smooth resistance transitions as you cycle. This feature simulates real road conditions, allowing you to gradually increase intensity and challenge yourself, catering to both beginners and seasoned cyclists.

Lifespan Fitness SM420 Spin Bike featuring automatic magnetic resistance, showcasing its adjustable resistance levels for personalized workouts.

High Quality Steel Frame

Built to withstand the most intense workouts, the high-quality steel frame ensures durability and longevity. This commercial-grade tubular steel construction minimizes frame wobble during sprints or hill climbs, providing a steady and stable foundation. Its robust design supports a maximum user weight of 140kg, making it suitable for a wide range of users.

Lifespan Fitness SM420 Spin Bike displaying its sturdy steel frame, designed for stability and durability during intense workouts.

Multifunctional LCD Display

Stay informed with the LCD display, which tracks essential workout metrics such as time, distance, speed, and calories burned. This feature helps you monitor your progress and stay motivated throughout your cycling sessions. The large screen shows multiple statistics at once, making it easy to keep an eye on your fitness goals.

Lifespan Fitness SM420 Spin Bike with a clear multifunctional LCD display, tracking workout metrics during a session.
adjustable seat and handlebars

Fully adjustable seat and handlebars

LAchieve the perfect riding position with full adjustability of the handlebars and seat, ensuring optimal comfort and proper alignment for riders of all sizes.

Comfort Sports Saddle

Ride in comfort with the ergonomically designed sports saddle, providing support and cushioning for extended cycling sessions.

1. Mid density padding for extra support

2. Minimal interference from sides of the saddle during vigorous pedalling

comfort sports saddle
tablet and smart phone holder

Tablet and Smart Phone Holder

Stay entertained and connected while you cycle by using the built-in tablet and smartphone holder, allowing you to enjoy your favourite media or apps.

Toe-Clip Pedals

Increase pedalling efficiency and improve power transfer with True Cyclists pedals

  • Alloy toe-clip pedals are heavy duty to withstand constant and hard pedalling.
  • Toe-clips lock in your feet to ensure footing and better control.
  • Maintain constant contact with pedals for better power transfer.
toe clip pedals
Lifespan Fitness SM420 Spin Bike demonstrating adjustable handlebars and seat for customized riding position.

Why is frame quality important?

Strong spin bike frames tend to offer:

  • Better stability and minimises rocking during hard sprints, fast pedalling or hill climbs.
  • Longer life performance, less prone to snapping or severe frame issues over time.

Our spin bikes come with a Lifetime Spin Bike Frame Warranty* so you know you're getting a spin bike that will last.

Lifespan Fitness SM420 Spin Bike featuring a comfortable sports saddle designed for extended rides.

TrueSpin Precision Flywheel

TrueSpin precision testing ensures that your flywheel delivers a natural and consistent pedal motion throughout your pedalling, keeping you balanced no matter the intensity of your workout.

Lifespan Fitness SM420 Spin Bike with built-in tablet and smartphone holder, enabling entertainment during workouts.

Smooth Belt Drive System

Experience a quiet and smooth ride with the belt drive system, ensuring minimal noise and maximum efficiency as you pedal your way to fitness.

Other features


transport wheels

Transport Wheels and Floor Levellers

 

intierchangeable seat

Interchangeable Seat

 

water bottle holder

Water Bottle Holder

 

Lifespan Fitness SM420 Spin Bike with Automatic Magnetic Resistance Features

  • 16 levels of automatic magnetic resistance
  • Commercial grade 12kg flywheel for smooth riding
  • High quality tubular steel frame for durability
  • Multifunctional LCD display tracking time, distance, speed, and calories burned
  • Fore and aft adjustability for optimal riding position
  • Comfort sports saddle for extended cycling comfort
  • Tablet and smartphone holder for entertainment
  • Toe-clip pedals to enhance pedaling efficiency



Lifespan Fitness SM420 Spin Bike with Automatic Magnetic Resistance Specs

Resistance 16 levels of adjustable magnetic resistance
Flywheel 12kg Commercial Grade Flywheel
Cranks 3-Piece Forged Steel Crank
Drivetrain Belt Drivetrain
Maximum User Weight 140kg
Assembled Dimensions (L x W x H) 105.6cm x 54cm x 105.8cm
Gross Weight 46kg
Net Weight 40kg
Pedals Aluminium alloy pedals with toe clips
Drink Bottle Holder Yes
Workout Data Resistance Level, Time, Distance, Calories
Cycle Monitor Large LCD display
Seat Comfort Sports Saddle, PU leather, adjustable up/down, fore/aft
Handlebars Adjustable Up/Down, In-Built Hand-Pulse Sensors, with Device Holder
Seat to Handlebar Range 61cm
Seat Height Range 82cm - 106.5cm
Warranty 5 Years on frame, 12 months parts replacement

Lifespan SM420 Spin Bike User Manual

Click below to download the Lifespan SM420 Spin Bike User Manual

Lifespan Fitness SM420 Spin Bike with Automatic Magnetic Resistance FAQ

What is the maximum user weight for the SM-420 Spin Bike?

The maximum user weight for the SM-420 Spin Bike is 140kg.

How many resistance levels does the SM-420 offer?

The SM-420 offers 16 levels of adjustable magnetic resistance.

Does the bike require assembly?

Yes, the product comes partially assembled with assembly instructions included.

What metrics can the LCD display track?

The multifunctional LCD display tracks time, distance, speed, and calories burned.

Shipping

This product ships in 2-3 business days after you place your order.

Use the shipping calculator beside the Add to Cart button for an exact quote to your postcode. Approximate delivery times across Australia:

Shipping times across Australia

Returns — 100 Day Money Back Guarantee

Buying fitness equipment online should feel confident, not risky. That’s why selected products at Cardio Online Superstore are backed by our 100 Day Money Back Guarantee. If the product isn’t right for you, you can request a return within 100 days of purchase and receive a refund of the product price, provided the eligibility criteria are met.

  • The product must have the 100 Day Money Back Guarantee badge on the product page
  • The product must be returned in as-new condition, in full working order, with no damage or excessive wear
  • The product must be fully disassembled and securely repackaged in its original packaging with all parts, accessories and manuals
  • Return shipping is at the customer’s expense, unless otherwise agreed

Original delivery, installation and service fees are non-refundable. See our Returns Policy for full details.

Price Match Guarantee

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$539$769Save $230

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