








Opto Sinus
The new Sinus is an approach disc you can count on. Sinus was one of our very first molds back in 2006, here it is redesigned for the future with a smoother feel and even more overstability. Sinus likes to fly slow and predictable. You will love how it will fly straighter and straighter the more you use it.
Please note: These discs may vary a lot in coloring.
- Overstable putt & approach disc with strong fade
- Speed: 2 | Glide: 2 | Turn: 0 | Fade: 2
- Disc Type: Putt & Approach
Product images may differ slightly from actual product. Shade of disc color may vary (for example, blue can be baby blue or sky blue). Foil stamp color are assorted, unless otherwise stated.
Gear up for your weekend round! Enjoy free shipping to selected regions.
- Sweden: Orders over 750 SEK
- EU: Orders over 75€
- Norway: Orders over 1500 NOK
- US: Orders over $150
Do we ship internationally? Absolutely! Explore our international shipping options here.

Sinus Performance Specs
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Description |
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Weights Defines the weight of the disc. Lighter discs are easier to throw, while heavier discs offer more stability in windy conditions.
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173+
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Compatibility | |
Player Skill Level Suggested experience level for this disc: beginner, intermediate, or advanced/expert players.
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Stability Describes the disc's flight pattern: overstable discs curve left, stable discs fly straight, and understable discs turn right (for right-hand backhand throws).
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Flight Numbers | |
Speed Indicates how fast the disc must be thrown to achieve its intended flight. Higher-speed discs can fly farther but require more power and are harder to control.
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Glide Indicates the disc's ability to maintain loft during flight. Discs with higher glide ratings stay in the air longer, making them ideal for maximizing distance or controlled approaches.
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Turn Indicates a disc’s tendency to turn right (for right-hand backhand throws) during the high-speed portion of its flight. Lower numbers indicate more resistance to turning, while higher numbers suggest greater turn potential.
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Fade Indicates how sharply a disc will fade left (for right-hand backhand throws) as it slows down at the end of its flight.
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Tech Details
Plastic & Performance
PDGA Specifications
Max Weight: 176.0 g
Diameter: 21.2 cm
Height: 1.9 cm
Rim Depth: 1.4 cm
Rim Thickness: 1.1 cm
Inside Rim Diameter: 19.0 cm
Rim Depth / Diameter Ratio: 6.6%
Rim Configuration: 54.25
Flexibility: 7.39 kg
Certification Number: 24-115
Approved Date: