Triphasic ISO Cups

Triphasic ISO Cups

Triphasic ISO Cups are patent pending and were made in collaboration with Cal Dietz of Triphasic Training. They securely hold the barbell in a groove, allowing athletes to perform isometric barbells lifts safely and easily. Compatible with 1" or 5/8" hole racks on 3x3" tubing. Triphasic ISO Cups allow the athlete to focus on the isometric contraction and not worry about the barbell.

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Triphasic ISO Cups Reviews

Based on 1 reviews from Gym Radar users, the Stray Dog Strength Triphasic ISO Cups have an average rating of 4.33 out of 5. They're currently the #56 most-owned J-Cups on Gym Radar, with 3 home gyms reporting ownership.

1 Review

4.33 / 5
Performance
5.00 / 5
Build Quality
5.00 / 5
Value
3.00 / 5

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RogueCrusher
mTor-ture Chamber
331 reviews
3470 points
(4.33)
2/23/2026
Stray Dog makes high quality pieces and these ISO Cups fall right in line. They are so easily set up and work in any push pull direction. Cal Dietz and Will Ratelle would be the top two resources when looking into ISO training. Will Ratelle has a whole setup from Stray Dog and does a great job not only showing setup but how he incorporates them into his training as well. The only knock I can give them is that they are a bit pricey for what they are, but when you compare them to, let’s say a decent J-Cup, the price then becomes more reasonable in that perspective.
Performance
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