Tennis NOS™
$69.95
Ships from Huntsville, TX
In Stock
60-day limited warranty
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Innovating since 2003
Family-owned, Huntsville TX
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Real specialists, not a call center
Made for daily program use
Designed for continuous reps, every day, every season
100+ implements, organized by goal
Arm care, velocity, strength, and recovery
About This Product
A handle, a short chain, and a ball weight — light in the hand at rest, loaded as the swing accelerates.
The SpeedChain® Tennis NOS™ trainers are neuromuscular over-speed (NOS™) shadow-swing tools for the serve and groundstroke. Each pairs a shaped handle and shaft with a short chain and a ball-shaped end weight, so the resistance is not fixed: swing slowly and the chain hangs light; swing at full speed and the chain extends and the load arrives with the swing itself. Three handles cover three tasks — the Tennis Handle for general swing work, the Pronator for forearm-rotation patterns, and the Acemaker for the serve — and the Complete Set puts all three in one bag.
- Three Handles, Three Tasks — Tennis Handle NOS for general swing work, Pronator NOS for pronation-pattern work, Acemaker NOS for the serve pattern. Buy them individually or as the Complete Set.
- Resistance That Scales With the Swing — The chain and end mass load as swing speed builds, so the hardest part of the rep is the fastest part of the swing.
- Pronator’s Curved Shaft — The curved geometry biases the forearm toward pronation through the swing — the rotation a serve, overhead, or forehand finishes with.
- Acemaker’s Second Pendulum — About 11″ at rest and roughly 19″ extended in the swing, and it accepts up to two additional 48-gram chain weights.
- Fits the SpeedChain® System — The Tennis Handle also accepts universal SpeedChain® attachments (Strong, X-Strong, Ultra, Pro) through quick-connector chains, for added resistance.
What Is It?
The Tennis NOS trainers are shadow-swing implements that apply changing resistance to tennis swing patterns. They are not racquets — they never strike a ball — and they are not a replacement for coaching, drilling, or match play. They plug into warm-ups and pattern work alongside regular racquet swings, and they are portable enough to live in a racquet bag.
How It Works
Three things the chain changes about a shadow swing
The Load Arrives With Speed
At rest the chain hangs from the shaft. As the swing accelerates, the chain extends outward and the end mass loads — a pendulum the player has to organize. The resistance peaks when the swing peaks, instead of dragging evenly from the start.
Geometry That Biases Rotation
The Pronator’s curved shaft and beveled grip are shaped so the forearm wants to rotate toward pronation as the swing comes through — the opposite of the flat, “waiter’s tray” position many serves get stuck in. The player feels the rotated path instead of being told about it.
A Second Pendulum on the Serve
The Acemaker hangs a chain pendulum off the end of a short shaft, so a serve swing has two pendulums to sequence instead of one. Keeping them synchronized at full effort is the drill — the player can feel when the sequence is smooth and when it falls apart.
What the Research Says
Over-Speed Training, Stated Plainly
Tennis players train swing speed and stroke patterns with drills that change the load on the swing, and over-speed and constraint-based tools are established parts of that training. The NOS trainers are constraint tools: each handle shapes what the swing has to organize — a chain pendulum that loads with speed, a curved shaft that biases forearm rotation, a second pendulum on the serve. Players use them for shadow swings after a warm-up, in short blocks mixed with regular racquet swings.
One honest limit: there is no peer-reviewed study on these specific NOS™ products. Research on over-speed training and dynamic-systems coaching describes training environments and general principles; it does not establish that these devices add serve speed, topspin, or on-court performance for any player. Judge them by the work they put into a practice session — a resistance profile and a swing constraint you can feel rep to rep, inside a broader program of coaching and play.
3 Handles
Tennis Handle, Pronator, and Acemaker — individually or as the Complete Set
26.5″
Pronator length — heavier than a normal racquet, built as an overload tool
11″ → 19″
Acemaker length at rest vs. extended in the swing
Product Details
How to Use It
Warm up first: Use the NOS trainers after a normal pre-session warm-up, indoors or outdoors, in a clear area with room for a full swing in every direction.
Build up: Start with slow, controlled shadow swings to get the feel of the device, then raise the intensity gradually — a typical block is around 8 to 10 full-speed swings, blended with regular racquet swings.
Acemaker sessions: Keep them short, progress from low-intensity swings to maximum effort, and use it only when warmed up — never when fatigued.
Care: Inspect the grip, shaft, chain links, and connectors before use and replace any worn component. The trainers are portable and fit in a racquet bag.
Variant & Selection Guide
| Variant | Built For | SKU |
|---|---|---|
| Tennis Handle NOS | General serve and groundstroke shadow swings (straight shaft) | THNOS |
| Pronator NOS | Forearm-rotation (pronation) pattern work for serves, overheads, and forehands (curved shaft) | PNOS |
| Acemaker NOS | Serve-pattern work with a second chain pendulum (short shaft) | ANOS |
| Complete Set | All three handles, each with its chain attachment | TENNOS |
Each handle is sold with one chain attachment included. All three handles also accept universal SpeedChain® attachments (Strong, X-Strong, Ultra, Pro) through quick-connector chains for added resistance.
Who This Is For
- Commonly used for tennis players working on serve, overhead, and groundstroke patterns in practice.
- Commonly used for coaches adding over-speed and constraint-based tools to warm-ups and pattern work.
- Commonly used by players working on forearm rotation in the serve — including players stuck in a “waiter’s tray” serve pattern who want to feel the pronated path.
Not recommended as a standalone answer for stroke problems or match results; the trainers belong inside a broader plan of coaching, drilling, and play.
What This Implement Does NOT Do
- They are not racquets; they never strike a ball and they are not legal for play.
- They are not a promise of serve speed, topspin, or match results; outcomes depend on the player’s overall program.
- They are not diagnostic tools; they will not identify why a stroke breaks down.
- They are not rehabilitation devices, and the Acemaker is not meant for use when fatigued.
Technical Specs
| Product Name | SpeedChain® Tennis NOS™ Trainers |
| Product Type | Neuromuscular over-speed (NOS™) shadow-swing trainers |
| Core Components | Shaped handle, aluminum shaft, chain, ball-shaped end weight (one chain attachment included per handle) |
| Grips | Rubber beveled grips |
| Pronator NOS | Approx. 26.5″ long; heavier than a normal racquet; zinc-coated steel chain |
| Acemaker NOS | Approx. 11″ at rest, extending to about 19″ in the swing; lighter than most racquets; light twist chain; accepts up to two additional 48 g chain weights |
| Resistance Options | All handles accept universal SpeedChain® attachments — Strong, X-Strong, Ultra, Pro |
| Use Environments | Indoors or outdoors with full swing clearance; shadow swings only |
Safety Compliance & Youth Guardrails
Not a toy: These are training tools for supervised practice environments. At full speed the chain and end weight carry real force; treat every swing like a full racquet swing.
Clear space: Never swing a trainer toward other people, nets, or hard structures, and check the area around the swing before every set.
Inspect before use: Check the links, connectors, and end weight before each session. Do not use a trainer if any component is worn, bent, or loose.
Warm-up and fatigue: Use the trainers only after a normal warm-up, start at controlled speeds, and do not use the Acemaker when fatigued.
Not a rehabilitation device: Any use in rehab or return-to-play settings should follow a plan written or approved by qualified medical or performance professionals.
Supervision: Junior and less-experienced players should use the trainers only under adult supervision. Stop immediately if pain, dizziness, or unusual fatigue appears.
Frequently Asked Questions
What is the difference between the three handles?
The Tennis Handle NOS is the lineup’s straight-shaft handle for general serve and groundstroke shadow swings. The Pronator NOS has a curved shaft whose geometry biases the forearm toward pronation, for serve, overhead, and forehand pattern work. The Acemaker NOS is the short, light serve trainer: its chain adds a second pendulum to the serve motion. The Complete Set includes all three handles.
Do I hit tennis balls with the NOS trainers?
No. All three are shadow-swing trainers — they are never used to strike a ball. Players swing them in open space, then pick up a racquet for ball work.
Will the Acemaker add speed to my serve?
No honest answer can promise that. There is no peer-reviewed study on these specific products, and serve outcomes depend on the player’s overall training — coaching, practice volume, and physical preparation. What the Acemaker provides is an over-speed shadow-swing environment for the serve pattern; what a player gets from it depends on how it is used inside that broader program.
What comes in the Complete Set?
All three handles — Tennis Handle NOS, Pronator NOS, and Acemaker NOS — each with its chain attachment (one chain attachment is included per handle).
Can I add resistance to the handles?
Yes. All three handles accept universal SpeedChain® attachments (Strong, X-Strong, Ultra, and Pro) through the quick-connector chains, and the Acemaker can also accept up to two additional 48-gram chain weights.
When should I use them in a session?
After a normal warm-up. Start with slow, controlled swings to get the feel of the device, build intensity gradually, and work in short blocks — around 8 to 10 full-speed swings — blended with regular racquet swings. The Acemaker should be used only when warmed up, and not when fatigued.
Questions before you buy? Call or Text Our Team at (936) 295-4459
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