The Innova Viper is a 6-speed fairway driver with positive turn and five fade, which makes it one of the most overstable discs on this site. It never stands up, and five fade at 6 speed means the finish is a hard left turn rather than a lean. Four glide keeps it low.
That makes it a pure utility disc: spike hyzers, forced left shots, headwind approaches, and forehand touch where you want it to come back hard. Point it and it obeys. What it won’t do is anything resembling straight — with plus turn and five fade there is no flat line in it at any power. For most throwers it flies well under 250 feet and lands where it hooks.
How much the Viper turns and fades depends on how hard it is thrown. These three shapes are drawn from the manufacturer’s numbers, not from measured throws.
Measured by the PDGA when the Viper was certified. Each card names discs that share the number, so you can feel it in the hand.
