Odyssey Zero-Torque Putter: Tri-Hot Square2Square at a Glance

For years, Odyssey has been one of the most influential Putter brands in golf—and with the Tri-Hot Square2Square series, Odyssey brings the concept of Zero Torque (ZT) to life in a particularly consistent, tour-inspired design. The goal: greater stability at impact, less unwanted twisting of the putter head, and thus more consistent direction and speed—even when the ball isn’t struck perfectly in the center.

If you’re a golfer who wants to gain a basic understanding of Zero Torque technology (torque, MOI/moment of inertia, perimeter weighting, and forgiveness), we recommend reading our guide first: “Zero Torque: Putter Technology Explained Simply.” This article focuses specifically on the Odyssey models —and on which setup might be right for you.

What makes Odyssey “Square2Square” putters special?

Odyssey positions the Tri-Hot Square2Square putters as a modern interpretation of the Zero-Torque concept: The design is engineered so that the Putter remains as stable as possible at the moment of impact and is less affected by off-center hits.

Key features you’ll find across all models:

• Forward CG (center of gravity shifted forward): The center of gravity (CG) is deliberately moved forward—for a more natural, smoother feel at impact.
• Hosel/shaft entry directly at the topline (S2S Topline): This supports an intuitive setup —in line with the “no shaft tilt” concept.
• Multi-material construction: Aluminum, steel, and over 140 g of tungsten ensure highly precise weight distribution.
• High proportion of mass near the topline: The product descriptions specify a distribution with over 80% of the weight directly beneath the topline —this is a key component for stability and control.

In short: Odyssey combines a mix of materials, center-of-gravity design, and Square2Square geometry to translate the ZT principle into a setup that many players find “automatic” and “reassuring.”

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Technology Highlights of the Series

To help you quickly identify the key features, here are the technologies that Odyssey particularly emphasizes in the Square2Square models:

Ai-DUAL Insert: More Consistent Ball Speed & Roll

Odyssey relies on an AI-developed dual-layer urethane insert (soft outer layer, firm core). The goal is more consistent ball speed across the face and improved roll.

FRD Groove (19°): Support for forward spin

According to the description, the FRD Groove is a deep, aggressive groove with a 19° angle designed to promote forward spin and ensure a clean ball launch.

Multi-Material with Tungsten: Stability Through Weight Distribution

With aluminum, steel, and more than 140 g of tungsten, weight is strategically placed where it contributes most to stability and forgiveness.

The four Odyssey Tri-Hot Square2Square ZT models in detail

All four putters are priced at 499.99 euros as listed in the descriptions. Differences lie primarily in head shape, loft, shaft/grip setup, and—in the case of the Cruiser—additionally in length and weight.

Odyssey Tri-Hot Square2Square ZT Seven – the premium all-rounder with a focus on feel

The Seven is a high-end model for golfers who want a highly controlled setup but also place great value on a soft sound and feel at impact.

What sets it apart

• Studio Carbon Steel (SCS) face insert with Chain Link Milling for an exceptionally soft feel.
• Ai-DUAL insert and FRD groove (19°) for consistent speed and roll.
• Counterbalanced custom graphite shaft.
• Full Contact Slim grip for precise handling.

Who is it for? If you’re a golfer looking for a “premium standard” in the ZT world—stable, tour-inspired, and with a very deliberate focus on sound and feel.

Odyssey Tri-Hot Square2Square ZT Jailbird – Tour Character with Vortex Design

The Jailbird is designed as a Mallet in the Square2Square configuration and also features a distinctive vortex-style design, which, according to the description, is intended to promote stable performance even in windy conditions.

What sets it apart

• Zero Torque Design with topline hosel position (S2S Topline).
• SCS Face Insert with Chain Link Milling.
• Pistol Plus grip (tour-inspired, mid-size) with clean edges.
• Black SL 120 Shaft: a heavier and stiffer graphite shaft with a black PVD coating.

Who is it for?If you’re a golfer who prefers a tour-style Mallet setup with precise grip control and want a model that Odyssey specifically highlights for its stability in windy conditions.

Odyssey Tri-Hot Square2Square ZT Rossie – a more compact Mallet, same ZT concept

The Rossie appeals to golfers who want the benefits of ZT but prefer a more compact Mallet design in their hands.

What sets it apart

• Compact Mallet design with Square2Square technology.
• Ai-DUAL Insert (dual-layer urethane).
• FRD Groove (19°).
• Black SL 120 Shaft (heavier, stiffer; black PVD coating).
• Pistol Plus grip for a crisp, control-oriented feel.

Who is it for? If you’re a golfer looking for a slightly more compact head feel but still want to take advantage of the full Square2Square/Zero-Torque characteristics with stable, controlled Performance.

Odyssey Tri-Hot Square2Square ZT Jailbird Cruiser – a longer setup for maximum stability

The Jailbird Cruiser brings the Square2Square concept to a deliberately stability-oriented “Cruiser” setup. Here, you get not just a Mallet head, but a setup that provides added reassurance through greater length, more weight, and a significantly longer grip.

What sets it apart

• 38" length —significantly longer than the standard models.
• Heavier head at 385 g.
• SL140 shaft: heavier and stiffer, tuned for maximum stability.
• 17" Pistol Plus grip (extended) – for more control and a smoother setup.

Who is it for? If you’re a golfer looking for a deliberately calmer, heavier, and longer putting setup—and you feel particularly comfortable with the “Cruiser” concept (longer shaft, long Grips).

Direct Comparison: Differences at a Glance

Which Odyssey Square2Square model is right for you?

To help you, as a golfer, find your way more quickly, here’s a simple guide:

• Are you looking for a premium ZT model with an exceptionally soft sound and feel? → Seven
• Do you prefer a tour-style Mallet with a distinctive design and precise grip control? → Jailbird
• Do you want a more compact Mallet but with full ZT Performance? → Rossie
• Are you looking for maximum confidence in terms of length, weight, and long Grips? → Jailbird Cruiser

Tip: Especially with Zero-Torque setups, it’s worth paying attention to length, lie, grip feel, and your setup routine. If you’re unsure, it’s best to seek advice or test several options to find the model that gives you the most confidence over the ball.

Conclusion

With the Odyssey Tri-Hot Square2Square ZT putters, you get a consistent zero-torque design that features a forward center of gravity (CG), topline hosel, multi-material construction with tungsten, and modern insert technologies. The four models cater to different preferences—from a feel-focused premium all-rounder to a stability-oriented cruiser setup.

If you’re a golfer looking to stabilize your line and achieve more consistency in your roll, the Square2Square models are definitely worth a look (and ideally a test on the range).