TheStack System Club Speed Trainer


From £339.00

In Stock

TheStack….Finally, a complete system for biohacking your clubhead speed!

Precision Hardware: 5 CNC milled Stack weights combine with a custom engineered shaft & hardware to create 30 unique combinations for unlocking dynamic variable inertia speed training.

Dynamic, App Based Training: Programming directly from golf’s leading biomechanist, Dr Sasho Mackenzie are now available to you through an innovative App that acts as your personal trainer.  Powered by A.I., the App records speeds, guides workouts, and gives custom metrics to keep you motivated.

Tracking Speed: You’ll need a speed tracking device to get started. TheStack prefer the PRGR but TheStack is compatible with other options.  Read more about compatible speed tracking device options in the ‘Radar Devices and Integration‘ section.

This product qualifies for Free UK Next Day Delivery

Order by 2:00 pm on Monday 20th May for free delivery on Tuesday 21st May

Product Brand:

The Stack System provides dynamic programming directly from golf’s leading biomechanist. Speed training secrets previously reserved for Tour players, now available to you.

Dr. Sasho MacKenzie, Co-Founder

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.

Sasho’s area of expertise is the training and biomechanics of speed generation. The Stack System allows Sasho to share his research findings and training wisdom directly with you, using the same tools, techniques, and nuances that he uses to speed train Tour players he has consulted.

Variable inertia speed training is the most efficient way to increase speed.

TheStack Hardware

  • 5 milled Stack weights enable 30 weight combinations between 0g and 300g
  • Dual-purpose weight case / phone stand
  • Highly engineered training club – Adult 105cm (41.5″)

TheStack App Training

  • Dynamic speed training formulated by Dr. Sasho MacKenzie
  • Guided workout timer for reps, sets, and rest intervals
  • Custom speed metrics to track your gains
  • Hands-free data entry using voice entry technology
  • Includes Single User Licence – Enables training and tracking for up to five local users under one login.
  • 2-year Single User Licence, accessible on iOS.

Access TheStack App from the App Store when your order arrives.  iOs only (15.0 or later)

app store link

* Applies to Single User Licence only

Flightscope Mevo+   Best All-Around

Breaking: TheStack App (iOS) now connects directly to the Mevo+ for the most seamless training experience.  Click here to see how it works.  You can bundle TheStack and the Mevo+ for the ultimate home training combination.


Reviews (0)
Interviewing Sasho Mackenzie
Matt Fitzpatrick - US Open speed gains!
Dynamic Training
TheStack App
Radar Devices and Integration
Additional Info

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