The Stack Golf Swing Speed Trainer

Finally, a complete system for biohacking your clubhead speed.

Join Matt Fitzpatrick and thousands of golfers using the most effective speed training solution in golf.

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

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.

TheStack App
Training made easy with our award winning App. Guided programs, timers, effortless data-entry, and track key metrics on your speed journey.

"The App is a game-changer and keeps me motivated and on track with my training." -Aaron V.

Dynamic Training
Programs designed in the lab - and proven on Tour - that respond dynamically as you level up your speed. Coupled with our flexible hardware, A.I. powered algorithms enable optimal training regardless of where you are on your golf journey.

"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.

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 (41.5") or Junior (38.5") version (see Fitting Juniors)
Speed radar not included. View all compatible devices here. We recommend the PRGR

TheStack App Training

2-year License included, accessible on iOS only.
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 bundled access to Stack Putting ($59 value) - Learn more
Includes Single User License - Enables training and tracking for up to twenty local (i.e. family) users under one login. App works with Family Sharing so the entire family can train easily on separate devices
Multi-user Coaches License license sold separately.