TheStack System Club Speed Trainer

From £289.99

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)
Stack training requires a speed device that can measure swings without ball impact. We recommend bundling with Stack Radar (Bluetooth connectivity). View all compatible devices here.

We recommend using The Stack Radar with TheStack System.

TheStack App Training

Rated 4.9 with 5,500+ Reviews on App Store

Includes 1-Year Membership to TheStack App
- Now on iOS, Android (Beta), and Chrome Web (Beta)
Adaptive speed training formulated by Dr. Sasho MacKenzie
Guided workout timer for reps, sets, and rest intervals
Custom speed metrics to track your gains
Bluetooth Connectivity to integration devices. Hands-free data entry using voice entry technology for non-integrated devices
Membership includes Bundled access to Stack Putting (iOS), Stack Wedging (iOS), and the Learning Library (All Platforms)
Train and track 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
Connect to any other Stacker using Share Codes
Are you a Coach? Learn about our Coaches License

Platform Availability

iOS: Access TheStack App from the App Store when your order arrives. Requires iOS 15.0 or newer. Access Speed, Wedging, Putting, and the Learning Library.

Android & Web (Beta): Install TheStack App from the Google Play Store or access it on Chrome Web when your order arrives. Access Speed + Learning Library today; Wedging + Putting coming in a future update.

See our FAQ pages for questions about membership access.

This product qualifies for Free UK Next Day Delivery

Order by 2:00 pm on Monday 19th January for free delivery on Tuesday 20th January

Product Brand: The Stack System

Description

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.
1-year Single User Licence, accessible on iOS.

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

* 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

TheStack App provides customised variable inertia speed training – the most efficient way to increase your clubhead speed. The algorithms that power the dynamic programming come from years of research by leading sport scientist, Dr. Sasho MacKenzie.

Here is how it works…

Dynamic Training Programs

TheStack App functions as your own personal trainer, guiding 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 maximise clubhead speed gains.

Baseline Session

Similar to working with a personal trainer, you are guided through a detailed intake session. Qualitative data is gathered on perceived strengths and weakness related to generating clubhead speed. You’ll be coached through a series of swing speed tests to generate a force-velocity profile of your current swing. This data informs A.I. algorithms which create custom programming options.

Programs

Following the Baseline Session, TheStack App provides a list of customized programming options. The list is prioritized specifically for you by greatest likelihood of increasing clubhead speed over a 6 to 10 week period (18 to 24 training sessions).

Training

During each training Session, TheStack App coaches you through each swing – seamlessly guiding stack weight configuration, swing intent and rest for each rep and set.

Hands-Free Data Collection

Using TheStack System’s voice entry technology, enjoy hands-free data collection during training sessions, by simply dictating your speed readings into the App. The hands-free data capture feature even works when wearing AirPods or earbuds. If you are training with a coach or friend, numbers can be keyed.

Workout Summaries

Detailed post-workout data review enables you to verify and, if needed, make any changes to speed data before syncing to the cloud.

Tracking and Sharing Metrics

TheStack App tracks key performance metrics such as Stack Speed, Distance Potential, Clubhead Speed and Grit Score. Easily share your progress and gains to your favorite social media platform.

Progress Checks

After completing a training program, TheStack App re-assesses your gains with a Progress Check, from there reformulating your next program. Data captured along the way improves the intelligence of TheStack algorithms through A.I. techniques.

Cloud Storage

Training data is stored securely in the cloud. Whether you get a new phone or want to login from another device for your next training session, everything works seamlessly.

Radar Devices and Integration

Radars Devices and Integration

Stack training requires a radar that can measure swings without ball impact. Not all radar devices have this capability. This page will always be up to date with radars that can capture non-impact swings.

At The Stack System, we analyze nearly all radar devices that track training swings and TheStack App factors out any bias, or systematic error, in speed measurements that are associated with our hardware design. What does this mean to you? If your radar measures with a bias, our smart algorithms adjust for it and accurately calculate your eSpeed and Distance Potential regardless of which device you are using.

Compatible Devices

Brand	Model
Stack Radar	Stack Radar (Stack App connectivity)
PRGR	Black Pocket, Red Pocket
Rapsodo	MLM2PRO, MLM
Flightscope	Mevo+ (Stack App connectivity) Mevo (testing soon, see below)
Trackman	Trackman4 (TPS)
Voice Caddie	SC200 Plus
Garmin	G80
FlightScope	X3, X2, X2 Elite, Xi Tour
Sport Sensors	Swing Speed Radar (SSR)
Yupiteru	GST-5, GST-7 BLE

*Other speed tracking devices may be capable of non-impact swings and can be used with TheStack App. We will continue to test new devices and keep this list current.

Disclosure: We may earn commission on some of the links below.

Stack Radar New

We developed Stack Radar as the perfect pairing with TheStack. Bluetooth connectivity to TheStack App allows for seamless training. It is small and packs into your golf bag easily, and gives the added benefit of being a great device to bring onto the golf course to measure ball speed while playing.

PRGR Portable Launch Monitor Best Value

Regardless of your distance, the PRGR is a great unit training with TheStack. It’s small size and large screen bring incredible convenience and it has the added benefit of measuring ball speed and distance estimations for all clubs in your bag.

Canadian Customers can acquire a PRGR here.

Flightscope Mevo+ Best All-Around

TheStack App (iOS) connects directly to the Mevo+ for a seamless training experience. Click here to see how it works. TheStack and the Mevo+ for the ultimate home training combination for golfers wanting a solution for launch monitor, home simulator, and Stack training.

Note: The Mevo is now capable of Speed Tracking. As of now, Mevo users will need two devices – one to run Mevo and an iOS device to run TheStack App.

Rapsodo MLM2PRO

The MLM2PRO™ captures non-impact swings with TheStack from within Rapsodo’s MLM2PR app using the R-Speed feature. You will need two devices to use the MLM2PR while speed training with TheStack. You will need an iOS device to use with TheStack app and a second device to run the MLM2PRO app.

MLM2PRO is a launch monitor and golf simulator designed for complete visibility into your game. Stacked with two advanced cameras plus Doppler Radar to provide video feedback and precise measurement on all golf shots. Pair MLM2PRO with any Android, Apple phone, or tablet to record multiple angles of your swing and watch your golf game grow.

Rapsodo MLM

The MLM™ captures non-impact swings with TheStack from within Rapsodo’s MLM app using the R-Speed feature. You will need two devices to use the MLM while speed training with TheStack. You will need an iOS device to use with TheStack app and a second iOS device to run the MLM2PRO™ app.

The Rapsodo Mobile Launch Monitor (MLM) pairs doppler-radar technology with your iPhone or iPad camera to provide instant video replay, active shot tracer, as well as several key performance metrics such as distance, club speed, ball speed, launch angle, launch direction, and smash factor.

Rapsodo MLM Launch Monitor – Golf Clearance Online

Trackman

As of March ’24, Trackman has now added Swing Training Mode for Trackman 4. Trackman users will need to update to Firmware 2.7.0 or newer and use TPS 9.4 or newer to access this feature. You will need two devices to Stack with Trackman – an iOS device to use with TheStack app and a second device to run TPS. See more details from Trackman here

Swing Caddie

If you hit your driver 275 yards or less (driver swing speed < 100 mph), the Swing Caddie SC200 Plus makes for a seamless Stack training experience. The Voice Output from the Swing Caddie will speak your Stack training speed, and TheStack App will listen for it using our Voice Entry technology so your data is read in seamless while you get the audible feedback while training. Click here to see this in action.

The SC200 Plus+ doubles as a portable launch monitor that measures swing speed, ball speed, and estimated carry distance. You can order a Swing Caddie here.

*note: The SC200 and SC300 can not capture training swings. We are currently evaluating the SC4 and SC300i for training swing capability with TheStack

Garmin

The Garmin Approach G80 is a unique product that is both a radar and GPS device in one. As of March 2021 you can update your software to Version 3.30, or newer, using Garmin Express and be able to track training swings. You can order a Garmin G80 here.

Note: The Garmin R10 is not capable or tracking non-impact swings at this time, but may be capable in the future. Click here to be put on the R10 waitlist.

FlightScope

X3 (Current Model), X2 Elite, X, Xi Tour

Flightscope’s X3, X2 Elite, X, and Xi Tour not only provides full down range flight tracking, but they also support non-impact training with Swing Training mode. TheStack App (iOS) now connects directly to the Mevo+ for the most seamless training experience

Shop X3 Now

Sports Sensors

The Swing Speed Radar® by Sports Sensors is a radar that measures club-head speed only and gets the job done. If you already have a Sports Sensors radar, you’re all set to start with TheStack. For best results with your training, we recommend to upgrade to another speed device. We like the PRGR.

Yupiteru

The Yupiteru GST-5 W and GST-7BLE are Japan products that report speed in Meters / Second and allow training swings with TheStack. TheStack App can be configured to dictate or enter your speed in M/S and record speed in MPH, so we are now compatible with the Yupiteru products. You can purchase the Yupiteru GST-5 W here.

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