The Stack System is widely regarded as one of the most effective and scientifically grounded golf speed training systems available today. Designed to help golfers increase clubhead speed, add real driving distance, and do it safely, The Stack System has become a go-to tool for amateurs, competitive players, and PGA Tour professionals alike.

Our evaluation is based on hands-on use and long-term testing, along with performance data tracked across multiple golfers and training cycles. Unlike traditional speed sticks, The Stack System is built around biomechanics, individualized programming, and measurable results — not guesswork.

For golfers actively searching for a proven way to swing faster in 2026, this is one of the most credible solutions on the market.

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What Is The Stack System?

The Stack System is a variable-inertia golf speed training system created by Dr. Sasho MacKenzie, one of the most respected biomechanics researchers in golf. Rather than relying on fixed-weight speed sticks, The Stack uses adjustable weight configurations and an AI-powered app to deliver personalized overspeed and overload training protocols.

The system is designed to:
• Increase maximum clubhead speed
• Improve force production and sequencing
• Deliver lasting speed gains that transfer to the course

It is fundamentally different from traditional speed training tools because every workout adapts to the golfer — not the other way around.

What’s Included With The Stack System

A complete Stack System kit includes:
• Precision-engineered training club with a custom shaft
• Interchangeable CNC-milled weights (20g–100g), combinable into 30+ unique load configurations
• Full access to The Stack App (iOS, Android, and web)
• Optional Stack Radar, which provides accurate, real-time clubhead speed feedback

The adjustable weight system enables both overspeed and overload training, allowing golfers to train across a wide force–velocity spectrum — something fixed-weight speed sticks simply cannot do.

How The Stack System Works

The process begins with an initial speed assessment inside The Stack App. Golfers swing the club using different weight configurations while speed data is recorded (especially accurate when paired with the Stack Radar or a compatible launch monitor).

From there, the app generates a personalized training plan, typically:
• 3 sessions per week
• 20–30 minutes per session
• Structured around specific loads, rep schemes, and rest intervals

As training progresses, the system automatically adjusts programming based on performance trends. The app also includes:
• Progress tracking dashboards
• “Grit” and consistency scoring
• Educational content explaining why each protocol works

This data-driven approach keeps training efficient, engaging, and sustainable. One underrated advantage of The Stack App is motivation and adherence: guided workouts, progress tracking, and performance feedback create accountability that most traditional speed sticks lack. Instead of guessing workouts on your own, the app tells you exactly what to do each session — which dramatically improves consistency and long-term results.

Real Results: Speed Gains You Can Measure

Golfers using The Stack System consistently report meaningful, repeatable speed gains:
• 5–8 mph increases in clubhead speed within 6–8 weeks for many users
• 10–15+ mph gains over longer training cycles (10–12 weeks) for committed golfers
• Distance gains often translate to 15–30+ yards off the tee

Notably, PGA Tour players such as Matt Fitzpatrick have publicly credited The Stack System as a key part of their speed development while maintaining control and accuracy.

Beyond raw speed, users often experience:
• Improved rate of force development
• Better sequencing and coordination
• Speed gains that stick — not temporary spikes

Unlike generic overspeed tools, The Stack’s science-based protocols are designed to reduce injury risk while producing long-term results.

Compatibility With Launch Monitors & Speed Training Setups

One of The Stack System’s biggest strengths is how well it integrates with modern golf technology.
It pairs seamlessly with:
• The optional Stack Radar
• Compatible launch monitors (including radar-based systems) like the Mevo Gen2

This makes it an excellent complement to data-driven practice setups and simulator environments, where speed training can be tracked alongside ball-flight performance.

Pros and Cons of The Stack System

Pros
• Fully personalized, AI-driven speed training
• Built on peer-reviewed biomechanics research
• Used by elite amateurs and PGA Tour professionals
• Engaging app that promotes consistency
• Measurable, trackable results
• Suitable for beginners through advanced players

Cons
• Higher upfront cost than basic speed sticks
• Requires commitment to the program for best results
• Radar strongly recommended for optimal feedback

How The Stack System “Stacks” Up

From our experience testing speed training systems at Center Face Golf, the biggest difference between The Stack and most competitors isn’t the club — it’s the structure.

Many speed trainers give you a weighted club and leave the rest up to you. You’re responsible for building routines, tracking progress, and staying consistent. For some golfers that works, but for many, it’s easy to get complacent or stop altogether.

The Stack System solves that problem with its app-driven programs. Each session tells you exactly what to do, how many swings to take, and when to progress. There’s no guesswork.

Proper warm-up and stretching before speed training is critical to help prevent injury, which is why the Stack app includes guided warm-up protocols that should always be followed.

Several Center Face Golf testers have used both The Stack and traditional speed trainers, and the feedback has been consistent: The Stack is much easier to stick with. A few testers admitted they eventually gave up on other systems, while The Stack’s guided programs kept them engaged and accountable.

Pricing & Value

The Stack System retails for $299 as a standalone training system, with a $499 bundle option that includes the Stack Radar for integrated speed tracking. Compared to generic speed sticks, the higher price reflects the structured app-based programming and data-driven progression that help golfers stay consistent and maximize results.Bottom Line

If you want a speed training system you’ll actually follow long-term, The Stack stands out. It feels less like a DIY training aid and more like a complete, guided program — and that difference matters.

Save 10% on The Stack System (Coupon Code TOP10)

Golfers can save 10% on The Stack System by purchasing directly from the manufacturer and
using coupon code TOP10 at checkout.

Is The Stack System Worth It?

For golfers who are serious about adding distance the right way, The Stack System is absolutely worth it.
It’s not a gimmick or a quick-fix training aid. It’s a complete speed development platform built around data, adaptability, and proven training principles. Golfers who follow the program consistently see real improvements — not just faster swings, but better overall athletic efficiency.

If your driver distance has plateaued, or if you want a structured, safe way to swing faster, The Stack System stands out as one of the most effective tools available.