The Slipstream GT is a discontinued disc with two claims on Discraft history at once: it was the prototype for the 2005 Ace Race, the event's third year, and a member of the groove-top family, certified on Halloween 2005 (PDGA cert 05-20, titled "Slipstream-GT (Ace Race 2005)") the very same day as the Banger GT and the Spectra.
That makes it the rare Ace Race mold that doubled as a GT experiment, carrying the thumb-track groove into the event's unreleased-prototype format. Unlike the Banger GT, it did not stick: the mold saw limited lineup life and was retired.
It carries no published flight numbers here; its PDGA record lists a 21.3-centimeter diameter and 176.8-gram maximum, and surviving copies are collector items from the event's early years.
Flight
Source: Discraft
SpeedHow hard the disc must be thrown to fly as designed. Putters are 1 to 3, the fastest drivers 14 and up.
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GlideHow long the disc stays in the air. More glide means more distance from the same throw.
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TurnHow much it drifts right early in flight (right-handed backhand). More negative, more drift.
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FadeHow hard it hooks left as it slows down (right-handed backhand). Higher, stronger hook.
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StabilityTurn plus fade. Negative drifts right and is easier for beginners. Positive finishes left.Turn + Fade
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Dimensions
Source: PDGA
DiameterHow wide the disc is, edge to edge. Almost every disc is 21 to 22 cm.
21.3 cm
HeightHow tall the disc is lying flat. Putters are usually the tallest.
1.7 cm
Rim DepthHow deep the rim is underneath, where your fingers grip. Putters have the deepest rims.
1.3 cm
Rim ThicknessHow wide the rim is. Wider rims make faster discs that need a stronger throw.
1.9 cm
Rim Inside DiameterThe width of the flat middle, inside the rim. Bigger usually means a slower, easier disc.
17.5 cm
Rim Depth/Diameter RatioRim depth as a share of the disc's width. Higher means a deeper rim for its size.
6.1%
Rim ConfigurationA PDGA score for the shape of the edge. Low is sharp, like a driver. High is rounded, like a putter.
29.25
BeadA small ridge under the edge of the rim, mostly on putters. It changes how the disc feels in hand.