BIOHACK YOUR BAT SPEED.

TheStack Baseball

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Your Personal Trainer For Bat Speed

Dynamic Training Programs

Customized variable inertia speed training - the most efficient way to increase your bat speed. The algorithms that power the dynamic programming come from years of research by leading sports scientist, Dr. Sasho MacKenzie.

Your Own Personal Speed Trainer

Be guided you through scheduled workouts while tracking Stack weight, rest, recovery, and performance gains. This information allows future workouts to be adjusted behind the scenes, so your training is optimized to maximize bat speed gains.

Tracking & Sharing Metrics

Track key performance metrics such as Stack Speed, Distance Potential, Bat Speed and Grit Score. Easily share your progress and gains.

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The Stack Baseball Hardware

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Bat Speed Sensor

5 CNC Milled Stack Weights

Tapered Handle with Stack Grip

Threaded Fastener

Bat Speed Sensor

5 CNC Milled Stack Weights

Tapered Handle with Stack Grip

Threaded Fastener

The Success Speaks for Itself

The speed training solution that's taken the golf world by storm

  • Over 40,000 golfers use TheStack System
  • Over 25 Million swings recorded
  • Average speed gains of 10.1 MPH

"TheStack is by far the best speed training system available to golfers." - Chris Como

Golf Digest #2 Ranked Golf Teacher who has coached Tiger Woods, Bryson DeChambeau, Jason Day, Jamie Lovemark & Si Woo Kim.

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The Savant of Speed

Dr. Sasho MacKenzie

MLB biomechanics & bat fitting consultant

Dr. Sasho MacKenzie has worked with multiple MLB teams as a biomechanics/bat fitting consultant – including the L.A. Dodgers.

Golf’s foremost biomechanist

Dr. Sasho MacKenzie is the research practitioner behind the world’s top golf coaches - his work and theories have driven a scientific, evidence-based revolution in golf instruction and movement training.

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TheStack Bat with Sensor
TheStack Bat with Sensor
TheStack Bat with Sensor
TheStack Bat with Sensor
TheStack Bat with Sensor
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TheStack Bat with Sensor

Description

  TheStack Hardware

  • 5 milled Stack weights enable 30 weight combinations between 0g and 400g
  • Dual-purpose weight case / phone stand
  • Highly engineered training bat - Pro or Youth version
  • Integrated Stack Sensor* measures bat speed
    • Seamlessly connects to TheStack App
    • No charging required, battery life > 1 year

TheStack Baseball App Training

  • Customized and responsive speed training formulated by renowned biomechanist Dr. Sasho MacKenzie
  • Guided workout timer for reps, sets, and rest intervals
  • Custom Bat Speed and Distance Potential metrics to track your gains
  • Connect to Coaches and other Players in TheStack App

Access TheStack Baseball App from the App Store when your order arrives. Requires iOS 15.0 or later.

*TheStack Baseball Bat ships to the US only. Please fill out the International Waitlist Form to help us decide which countries to expand to next.
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