Eighty-one percent of customers research pricing and visit at least three websites before purchasing, according to Adweek. This statistic reveals modern buyers are skeptical, knowledgeable, and in control, shifting the focus from linear sales to a continuous, customer-driven cycle. The flywheel model offers a compelling answer for building a self-powering growth engine.
For decades, the sales funnel dominated growth, treating customers as an output. This approach fails in today's market, where trust and word-of-mouth are paramount. The flywheel model offers a more durable, sustainable framework, building momentum by placing customers at the business's center, using their success and satisfaction to fuel growth. Apply this concept to your startup.
What Is the Flywheel Model and How Does It Work?
The flywheel model is a business framework that explains the momentum you gain when you align your entire organization around delivering a remarkable customer experience. Originally a mechanical device invented by James Watt to store rotational energy, the business analogy is powerful. Think of a heavy, spinning wheel. The first few pushes are difficult and require significant effort. But as it gains momentum, each subsequent push requires less energy to increase its speed, and it continues to spin on its own for a time. In business, that energy comes from delighted customers.
The concept was popularized in a business context by Jim Collins in his book Good to Great, where he introduced The Flywheel Effect. The idea is that good-to-great transformations don't happen in one fell swoop. They happen through a process of relentlessly pushing a giant, heavy flywheel, turn by turn, building momentum until a point of breakthrough. HubSpot later adapted this concept into a comprehensive model to replace the traditional sales funnel. According to HubSpot, the momentum of your company’s flywheel is determined by three key factors:
- Speed: How fast you spin the flywheel. You increase speed by applying force to the areas that have the biggest impact, such as your customer service team or investing in a frictionless customer onboarding experience. These are your growth levers.
- Friction: The forces that slow your flywheel down. Friction can be anything from poor internal communication and team silos to a confusing pricing structure or slow customer support. Identifying and reducing friction is crucial for maintaining momentum.
- Size: How big your flywheel is. This relates to the size and weight of your customer base. The more happy, successful customers you have, the more energy is stored in your flywheel, making it a more powerful and stable growth engine.
The flywheel uses happy customers' momentum to drive referrals and repeat sales, channeling their energy back into the system for a self-reinforcing growth loop.
Applying the Flywheel Model to Startup Growth Strategies
To implement the flywheel model, a clear framework is needed to connect daily initiatives to long-term momentum. We'll examine how successful companies apply it and explore two actionable frameworks for your use.
Perhaps the most famous example is Amazon. In his book The Everything Store, Brad Stone describes how Jeff Bezos and his team sketched their growth strategy on a napkin. This sketch became the legendary Amazon flywheel. It works like this:
- Lower prices lead to a better customer experience.
- A better customer experience attracts more traffic.
- More traffic attracts more third-party sellers to the platform.
- More sellers lead to greater selection and variety.
- Greater selection further enhances the customer experience.
- This growth allows Amazon to lower its cost structure, which enables it to lower prices even further, accelerating the entire loop.
Hims & Hers, a healthcare platform, exemplifies the flywheel's core principle: feed any part, and the system accelerates. According to MLQ AI, the company grew to over 2.4 million subscribers by building a consumer health flywheel. Its model thrives on compounding network effects, high customer retention, and vertical integration, creating a durable, self-reinforcing growth engine.
Two frameworks to build your own flywheel:
Framework 1: The Product-Led Growth (PLG) Flywheel
In the world of SaaS, the funnel is rapidly being replaced by the flywheel. The Product-Led Growth (PLG) Flywheel is a framework designed specifically for businesses that use their product as the primary driver of customer acquisition, conversion, and expansion. Based on interviews with over 50 companies, it maps the user journey across five distinct segments, with key actions moving them from one stage to the next.
- Strangers become Explorers through the Evaluate action. This is when a potential user discovers your product and begins to assess if it solves their problem, often through a free trial or freemium plan.
- Explorers become Beginners through the Activate action. Activation occurs when the user experiences the product's value firsthand—the "aha!" moment.
- Beginners become Regulars through the Adopt action. The user integrates the product into their regular workflows, making it a habit.
- Regulars become Champions through the Expand action. They upgrade, use more features, and become deeply invested in the product ecosystem.
- Champions create new Strangers through the Advocate action. They become evangelists, driving word-of-mouth, writing positive reviews, and referring new users, which spins the flywheel faster.
Optimize the user experience at each stage to reduce friction, encourage key actions, and turn users into advocates.
Framework 2: The Simplified Growth Flywheel
For startups outside of a pure PLG model, a more generalized framework can be easier to implement. The Growth Flywheel, as described in a Medium article on the topic, breaks growth initiatives into four connected components:
- Demand Generation: All activities that attract your target audience (e.g., content marketing, SEO, paid ads).
- Client Acquisition: The process of converting that audience into paying customers (e.g., sales demos, onboarding, conversion rate optimization).
- Lifetime Value (LTV) Optimization: Initiatives aimed at increasing the total value of a customer over time (e.g., upselling, cross-selling, new feature adoption).
- Retention & Referral: Efforts to keep customers happy and turn them into advocates (e.g., excellent customer support, loyalty programs, referral incentives).
Flywheel components are interconnected, not linear stages. A successful referral program (Retention & Referral) directly feeds new leads into Demand Generation. A smooth acquisition process leads to happier customers with higher LTV. Effective growth strategies positively impact multiple flywheel components simultaneously.
Flywheel Model vs. Sales Funnel: Which is Better for Customer Acquisition?
The debate between the flywheel and the sales funnel comes down to a fundamental difference in philosophy. The sales funnel is a linear model that visualizes customers as an output, while the flywheel is a cyclical model that sees them as an input—the very energy source that powers growth.
Direct comparison of the two models:
| Aspect | Sales Funnel | Flywheel Model |
|---|---|---|
| Structure | Linear (Top to Bottom) | Cyclical (Continuous Loop) |
| Focus | Closing deals and hitting quotas | Delighting customers and building relationships |
| Momentum | Loses momentum at each stage | Builds and stores momentum over time |
| Role of Customer | An output; the end of the process | The center; a driver of the process |
| Team Alignment | Often creates silos between Marketing, Sales, and Service | Requires deep collaboration across all teams |
| Primary Growth Driver | Company-led efforts (e.g., sales and marketing spend) | Customer-led efforts (e.g., word-of-mouth and referrals) |
The data clearly shows that the funnel model is becoming less effective because it doesn’t reflect how modern customers make decisions. Buyers don't move in a straight line; they jump between stages, consult third-party reviews, and rely on their networks. The flywheel embraces this complexity. It acknowledges that the customer journey doesn't end at the point of sale. In fact, that's where the greatest opportunity for growth begins. By investing in customer success and service, you create advocates who happily feed your acquisition efforts, creating a more efficient and sustainable growth engine.
Why the Flywheel Model Matters
Adopting the flywheel model fundamentally shifts a company's mindset, prioritizing long-term customer value over short-term acquisition targets. This builds a more resilient and defensible business.
The power of the flywheel lies in strategic compounding. As Jim Collins notes, "Never underestimate the power of momentum, especially when it compounds over a very long time." Each happy customer, each process improvement, and each piece of reduced friction is a small push on the wheel. Over time, these efforts compound to create unstoppable momentum that competitors find difficult to replicate. You are no longer just buying growth; you are building an asset that generates its own.
The flywheel model aligns your entire company with modern customer expectations, where buyers seek companies invested in their success, not just transactions. It forces every department—marketing, sales, product, and support—to take ownership of the customer experience. This unified effort creates a seamless journey, transforming satisfied customers into vocal brand champions.
Frequently Asked Questions
What are the three parts of the flywheel model?
The three core components that determine the momentum of a business flywheel, as defined by HubSpot, are speed, friction, and size. Speed refers to how fast the wheel is spinning, which is increased by applying force to high-impact areas. Friction is any force that slows the wheel down, such as poor processes or a bad customer experience. Size refers to the weight of the wheel, which in business terms is your happy customer base that stores and generates energy.
How do you build a flywheel for a startup?
To build a flywheel, start by mapping your customer journey and identifying the key actions that create value and delight. Next, determine how those delighted customers can feed back into your growth through referrals, reviews, or repeat business. Then, systematically identify and eliminate points of friction in your processes. Finally, define metrics for each stage of the flywheel (e.g., activation rate, referral rate) and continuously measure and optimize your efforts to increase its speed.
What is an example of a company using the flywheel model?
Amazon is the classic example of a company built on the flywheel effect, where lower prices and a vast selection create a better customer experience that attracts more customers and sellers in a virtuous cycle. A modern example is Atlassian, which used a low-cost, product-led model to acquire millions of users who then became advocates within their organizations, driving widespread adoption with minimal traditional sales effort.
Is the flywheel better than the sales funnel?
While the sales funnel measures conversion at specific stages, its linear nature treats customers as an endpoint. The flywheel, conversely, is a more effective and sustainable model for modern businesses, particularly in product-led growth (PLG) and subscription-based industries. It's a holistic framework recognizing happy customers as the single most powerful driver of new business, better suited for building long-term, compounding growth.
The Bottom Line
Instead of asking only how to acquire the next customer, the flywheel model prompts you to ask how to make current customers so successful they bring you the next one. This customer-centric strategy reframes growth, moving beyond the leaky, linear thinking of the sales funnel to build a self-sustaining engine powered by customer success.
