If you’ve ever stood in front of a rack of disc golf discs and stared at the numbers on them like a math equation you didn’t study for, you’re not alone. The four-number flight rating system used by Innova Disc Golf (and widely adopted by other brands) helps players understand how a disc will fly — but only if you know how to interpret those numbers.
Whether you’re a beginner trying to figure out which disc to start with, or an intermediate player looking to fine-tune your bag, understanding this system can make a huge difference in your game. In this article, we’ll break down each of the four numbers, explain what they mean, what the ranges are, and offer analogies and real-world examples to help you visualize how each number affects flight.
Overview of the Four Numbers
The four numbers on an Innova disc are usually printed on the top or the underside of the disc and look like this: [Speed] / [Glide] / [Turn] / [Fade] — for example: 9 / 5 / -2 / 2.
Let’s define each term briefly before diving deeper:
- Speed (1–14): How fast the disc needs to be thrown to perform as designed.
- Glide (1–7): How well the disc stays aloft during flight.
- Turn (+1 to -5): How much the disc turns (curves right for right-handed backhand throws) in the early part of flight.
- Fade (0–5): How sharply the disc hooks left at the end of the flight (for RHBH throws).
1. Speed (Rated 1–14)
Speed is the first number in the flight rating system and ranges from 1 to 14. This number reflects how fast the disc must be thrown (in terms of arm speed and velocity) to get it to fly correctly.
Analogy:
Think of Speed like the gear of a bicycle. A low-speed disc (like a putter) is like pedaling in first gear — easy to control, slower, but great for short distances and steep climbs. A high-speed disc (like a distance driver) is like pedaling in 10th or 12th gear — it’s built for power and speed but requires effort and technique to maintain control.
Real-world Example:
- A Speed 2 disc like the Innova Aviar is a putter. It’s slow, easy to control, and doesn’t cut through the wind well — which is fine because it’s meant for short-range accuracy.
- A Speed 13 disc like the Innova Boss is a distance driver designed to fly far, fast, and efficiently — but if your throw doesn’t have enough velocity, it won’t “open up” and fly as intended.
Key Takeaway:
Higher-speed discs require more power to perform well. Beginners often assume higher speed = more distance, but that’s only true if you have the arm speed to match. Starting with lower-speed discs is often better for learning form and building confidence.
2. Glide (Rated 1–7)
Glide measures how well a disc stays in the air. It’s the second number in the flight rating system and ranges from 1 (very little glide) to 7 (high glide).
Analogy:
Think of Glide like a paper airplane. Some paper airplanes are built heavy and drop quickly — that’s low glide. Others have wide wings and float gently — that’s high glide.
Real-world Example:
- The Innova Wombat3, with a Glide rating of 6, is like a frisbee you could throw for miles (or at least it feels like it). It stays in the air forever, ideal for long, floaty turnover shots or tailwind conditions.
- The Innova Rhyno, with a Glide of 1, drops like a rock — but that’s exactly what you want when precision is more important than distance.
When High Glide Helps:
- Beginner players: Extra air time often means more distance.
- Tailwinds: Discs will carry farther if they can stay aloft.
- Uphill throws: You need the disc to stay up longer to gain elevation.
When Low Glide is Better:
- Headwinds: Less float means less deviation in unstable conditions.
- Controlled approaches: When you want the disc to hit and stick instead of sailing past the basket.
3. Turn (Rated +1 to -5)
Turn measures the disc’s tendency to turn to the right (for a right-handed backhand throw) during the early, high-speed portion of the flight. Turn is the third number and ranges from +1 (least turn) to -5 (most turn).
Analogy:
Imagine you’re driving a car and hit the gas. A disc with a lot of negative turn is like a car whose steering wheel pulls to the right as soon as you accelerate. That’s what a -4 or -5 Turn disc feels like when thrown hard — it “turns over” to the right early in its flight.
Real-world Example:
- The Innova Sidewinder has a Turn rating of -3, which means it likes to “turn over” right when thrown hard. Great for rollers and anhyzer lines.
- The Innova TeeBird, with a Turn of 0, holds straight with very little high-speed turn — it’s stable and reliable.
- The Innova Max, with a Turn of +1, is very overstable and resists turning altogether.
Who Needs Turn:
- New players: Understable discs (with more negative Turn) can help compensate for lower arm speed.
- Roller shots: When thrown hard and flat, a disc with -4 or -5 Turn can flip over and roll.
- Anhyzer shots: A disc that turns easily can help shape right-bending flight paths for backhand throws.
4. Fade (Rated 0–5)
Fade measures how much the disc wants to hook left at the end of its flight (for RHBH throws). It’s the fourth number and ranges from 0 (very little fade) to 5 (strong, hard finish).
Analogy:
Think of Fade like a boomerang’s return — the stronger the fade, the harder it wants to come back at the end. Discs with high fade are like a dog on a leash — no matter how far they run, they’re coming back to you. Discs with little to no fade just glide forward and drop gently.
Real-world Example:
- The Innova Firebird is notorious for its Fade of 4. It will always finish left (RHBH), no matter how you throw it. Perfect for spike hyzers and windy conditions.
- The Innova Mako3, with a Fade of 0, has a dead-straight finish — ideal for straight approaches.
- The Innova Leopard, with a Fade of 1, has a soft, gentle fade — making it beginner-friendly.
Use Cases:
- High fade is great for:
- Windy conditions: Discs with a strong finish don’t get pushed off line as easily.
- Hyzer finishes: When you need the disc to reliably hook left.
- Forehand flex shots: Fade brings the disc back into the fairway.
- Low fade is great for:
- Dead-straight throws: You want the disc to go exactly where you aim.
- Tunnel shots: No room for sharp angles or sideways finishing.
- Beginner control: Less fade means fewer surprises.
Putting It All Together: How the Numbers Interact
The real power of the Innova system is not just in understanding each number, but in seeing how they interact.
Let’s compare two discs:
Innova Destroyer (12 / 5 / -1 / 3)
- Speed 12: Fast disc for powerful arms.
- Glide 5: Good hang time.
- Turn -1: A touch of early right movement to gain distance.
- Fade 3: Strong finish, hooks left.
This disc is great for advanced players who can handle high-speed flights and need reliable finishes.
Innova Leopard (6 / 5 / -2 / 1)
- Speed 6: Easier to throw for all skill levels.
- Glide 5: Stays in the air nicely.
- Turn -2: Turns to the right during flight.
- Fade 1: Finishes straight to slightly left.
Perfect for beginners or finesse players shaping turnover lines.
Final Thoughts: Choosing the Right Disc for You
The flight rating system isn’t a guarantee — it’s more like a weather forecast. Your form, angle, arm speed, and the wind all influence how a disc will actually fly. But once you understand what Speed, Glide, Turn, and Fade represent, you can start selecting discs intentionally rather than guessing.
If you’re new to disc golf, start with lower Speed, higher Glide, more Turn, and less Fade. If you’re experienced, you’ll build a full bag that includes overstable, understable, and neutral discs to cover every shot imaginable.
And remember: Just like learning any language, fluency in the flight rating system comes with time. So grab a disc, hit the course, and see what the numbers mean in your own hands.
Sortable list of Innova discs (as of 6/30/2025)
| Type | DISC | SPEED | GLIDE | TURN | FADE | ABBR. |
|---|---|---|---|---|---|---|
| Putter | Aero | 3 | 6 | 0 | 0 | AE |
| Mrange | Alien | 4 | 2 | 0 | 1 | |
| Putter | Animal | 2 | 1 | 0 | 1 | |
| Driver | Ape | 13 | 5 | 0 | 4 | APE |
| Fdriver | Archangel | 8 | 6 | -4 | 1 | AA |
| Driver | Archon | 11 | 5 | -2 | 2 | AC |
| Mrange | Atlas | 5 | 4 | 0 | 1 | |
| Mrange | Avatar | 5 | 4 | 0 | 2 | |
| Putter | Aviar | 2 | 3 | 0 | 1 | |
| Putter | Aviar Driver | 2 | 3 | 0 | 2 | BB |
| Putter | Aviar3 | 3 | 2 | 0 | 2 | AV3 |
| Putter | AviarX3 | 3 | 2 | 0 | 3 | AX3 |
| Fdriver | Banshee | 7 | 3 | 0 | 3 | BA, B |
| Driver | Beast | 10 | 5 | -2 | 2 | BST |
| Putter | Birdie | 1 | 2 | 0 | 0 | BD |
| Driver | Boss | 13 | 5 | -1 | 3 | BO |
| Putter | Bullfrog | 3 | 1 | 0 | 1 | |
| Mrange | Caiman | 5.5 | 2 | 0 | 4 | |
| Driver | Charger | 13 | 5 | -1 | 2 | |
| Fdriver | Cheetah | 6 | 4 | -2 | 2 | CH |
| Putter | Classic Aviar | 2 | 3 | 0 | 0 | AV |
| Mrange | Cobra | 4 | 5 | -2 | 2 | CO |
| Driver | Colossus | 14 | 5 | -1 | 3 | CS |
| Putter | Colt | 3 | 4 | -1 | 1 | CL |
| Driver | Corvette | 14 | 6 | -1 | 2 | |
| Mrange | Coyote | 4 | 5 | 0 | 1 | CY |
| Mrange | Cro | 5 | 3 | 0 | 2 | CRO |
| Driver | Daedalus | 13 | 6 | -3 | 2 | DL |
| Putter | Dart | 3 | 4 | 0 | 0 | DT |
| Driver | Destroyer | 12 | 5 | -1 | 3 | DS, D |
| Driver | Dominator | 13 | 5 | -1 | 2 | DM, DR |
| Fdriver | Dragon | 8 | 5 | -2 | 2 | DG |
| Fdriver | Eagle | 7 | 4 | -1 | 3 | EG, E, EX |
| Fdriver | Firebird | 9 | 3 | 0 | 4 | FB |
| Driver | Firestorm | 14 | 4 | -1 | 3 | |
| Driver | FL | 9 | 3 | 0 | 2 | FL |
| Mrange | Foxbat | 5 | 6 | -1 | 0 | FT |
| Mrange | Gator | 5 | 2 | 0 | 4 | GT |
| Fdriver | Gazelle | 6 | 4 | 0 | 2 | GZ |
| Driver | Gorgon | 10 | 6 | -2 | 1 | |
| Driver | Groove | 13 | 6 | -2 | 2 | GV |
| Fdriver | Hawkeye | 7 | 5 | -1 | 1 | |
| Putter | Hydra | 3 | 3 | 0 | 2 | HY |
| Putter | Invader | 3 | 2 | 0 | 1 | |
| Driver | Invictus | 10 | 4 | 0 | 3 | |
| Fdriver | IT | 7 | 6 | -2 | 1 | |
| Mrange | Jay | 5 | 4 | 0 | 1 | |
| Putter | JK Aviar | 2 | 3 | 0 | 2 | JK |
| Driver | Katana | 13 | 5 | -3 | 3 | KA |
| Putter | KC Aviar | 2 | 3 | 0 | 2 | KC |
| Mrange | King Cobra | 4 | 5 | 0 | 2 | CO |
| Mrange | Kite | 5 | 6 | -3 | 1 | KT, K |
| Driver | Krait | 11 | 5 | -1 | 2 | KR |
| Fdriver | Leopard | 6 | 5 | -2 | 1 | L |
| Fdriver | Leopard3 | 7 | 5 | -2 | 1 | L3 |
| Mrange | Lion | 5 | 4 | 0 | 2 | |
| Mrange | Mako | 4 | 5 | 0 | 0 | MK |
| Mrange | Mako3 | 5 | 5 | 0 | 0 | MK3, MK |
| Driver | Mamba | 11 | 6 | -5 | 1 | MB |
| Mrange | Manta | 5 | 5 | -2 | 1 | MN |
| Driver | Max | 11 | 3 | 0 | 5 | MAX |
| Putter | Mirage | 3 | 4 | -3 | 0 | MG |
| Driver | Monarch | 10 | 5 | -4 | 1 | MC |
| Driver | Monster | 10 | 3 | 0 | 5 | MO, M |
| Driver | Mystere | 11 | 6 | -2 | 2 | MY |
| Putter | Nova | 2 | 3 | 0 | 0 | |
| Driver | Orc | 10 | 4 | -1 | 3 | ORC, O |
| Mrange | Panther | 5 | 4 | -2 | 1 | PA |
| Mrange | Pig | 4 | 1 | 0 | 3 | PIG, P |
| Putter | Polecat | 1 | 3 | 0 | 0 | PC |
| Driver | Racer | 12 | 6 | -1 | 2 | |
| Mrange | Rat | 4 | 2 | 0 | 2 | RAT |
| Putter | Rhyno | 2 | 1 | 0 | 3 | RY |
| Putter | RhynoX | 2 | 1 | 0 | 4 | |
| Fdriver | Roadrunner | 9 | 5 | -4 | 1 | RR |
| Mrange | Roc | 4 | 4 | 0 | 3 | R, KCR, OR |
| Mrange | Roc+ | 4 | 5 | 0 | 2 | R+ |
| Mrange | Roc3 | 5 | 4 | 0 | 3 | R3, R |
| Mrange | RocX3 | 5 | 4 | 0 | 3.5 | RX3 |
| Mrange | Rollo | 5 | 6 | -4 | 1 | |
| Fdriver | Savant | 9 | 5 | -1 | 2 | |
| Mrange | Shark | 4 | 4 | 0 | 2 | SH |
| Mrange | Shark3 | 5 | 4 | 0 | 2 | SH3, SH |
| Driver | Shryke | 13 | 6 | -2 | 2 | SY |
| Fdriver | Sidewinder | 9 | 5 | -3 | 1 | SW |
| Mrange | Skeeter | 5 | 5 | -1 | 1 | SK |
| Putter | Sonic | 1 | 2 | -4 | 0 | |
| Mrange | Spider | 5 | 3 | 0 | 1 | SP |
| Driver | Starfire | 10 | 4 | 0 | 3 | SF |
| Mrange | Stingray | 4 | 5 | -3 | 1 | ST |
| Putter | Stud | 3 | 3 | 0 | 2 | SD |
| Fdriver | TeeBird | 7 | 5 | 0 | 2 | TB, T |
| Fdriver | TeeBird3 | 8 | 4 | 0 | 2 | T3 |
| Driver | TeeDevil | 12 | 5 | -1 | 2 | DV |
| Driver | TeeRex | 11 | 4 | 0 | 4 | TR |
| Driver | Tern | 12 | 6 | -3 | 2 | TE |
| Fdriver | Thunderbird | 9 | 5 | 0 | 2 | TH |
| Fdriver | TL | 7 | 5 | -1 | 1 | TL |
| Fdriver | TL3 | 8 | 4 | -1 | 1 | TL3 |
| Mrange | Toro | 4 | 2 | 1 | 3 | |
| Fdriver | Valkyrie | 9 | 4 | -2 | 2 | VL |
| Mrange | VCobra | 5 | 5 | -1 | 2 | VC |
| Fdriver | Viking | 9 | 4 | -1 | 2 | VG |
| Fdriver | Viper | 6 | 4 | 1 | 5 | VI, V |
| Mrange | VRoc | 4 | 4 | 0 | 1 | VR |
| Driver | Vulcan | 13 | 5 | -4 | 2 | VU |
| Driver | Wahoo | 12 | 6 | -2 | 2 | WA |
| Putter | Wedge | 3.5 | 3 | -3 | 1 | WD, WE |
| Putter | Whale | 2 | 3 | 0 | 1 | WL |
| Fdriver | Whippet | 6 | 3 | 1 | 5 | WH, WX |
| Mrange | Wolf | 4 | 3 | -4 | 1 | WF, W |
| Mrange | Wombat | 5 | 6 | -1 | 0 | WB |
| Mrange | Wombat3 | 5 | 6 | -1 | 0 | WB |
| Driver | Wraith | 11 | 5 | -1 | 3 | WR |
| Driver | XCaliber | 12 | 5 | 0 | 4 | XC |
| Putter | XD | 3 | 4 | -1 | 1 | XD |
| Putter | Xero | 2 | 3 | 0 | 0 | |
| Putter | Yeti Aviar | 2 | 3 | 0 | 1 | Ұ |