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 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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Everything you need to start training

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 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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everything you need included, No radar required

Stack Sensor

Accurate Speed Measurement

Stack Sensor accurately measures Bat Speed while training to drive the dynamic and customized programming.

Easy Connectivity

Connecting to our App is seamless. Just fire up the App, waggle the bat to wake it up, and start training.

No Charging Needed

Stack Sensor is smart. It goes to sleep when not in use, so you don't need to charge anything. The battery lasts over a year and is easy to change.
TheStack Bat - Includes integrated Speed Sensor and Award Winning App
TheStack Bat - Includes integrated Speed Sensor and Award Winning App
TheStack Bat - Includes integrated Speed Sensor and Award Winning App
TheStack Bat - Includes integrated Speed Sensor and Award Winning App
TheStack Bat - Includes integrated Speed Sensor and Award Winning App
TheStack Bat - Includes integrated Speed Sensor and Award Winning App
TheStack Bat - Includes integrated Speed Sensor and Award Winning App
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TheStack Bat - Includes integrated Speed Sensor and Award Winning App

Description

TheStack Hardware

  • 5 milled Stack weights enable 30 weight combinations between 0g and 400g
  • Highly engineered training bat - Pro or Youth version
  • Integrated Stack Sensor measures bat speed
    • Seamlessly send speed data to TheStack App while training
    • Sensor goes to sleep when not in use
    • No charging required, battery life > 1 year

TheStack Baseball App Training

  • Customized and responsive speed training formulated by renowned biomechanist Dr. Sasho MacKenzie
  • Training Made Fun and Easy
    • Enjoy rewards when you set Personal Records
    • Guided workout timer for reps, sets, and rest intervals
  • Custom Bat Speed and Distance Potential metrics to track your gains (Learn More)
  • Connect to Coaches and other Players in TheStack App
  • Full access included with purchase - No additional cost for subscription fees 
    • Share hardware amongst your family

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.

International customer?  Please fill out the International Waitlist Form
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