GRUVN MUVN 16HD Full Foam vs Ronbus Quanta R4
On published specifications these two are very close. Every derived index sits within 8 points, which is inside the margin of an estimate built from spec sheets. Choose on price, handle length, or whichever brand you can demo.
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| Spec |  |  |
|---|---|---|
| Price (MSRP)Manufacturer Spec | $169.99 | $119.99▲ |
| PowerDerived | 72 | 73▲ |
| ControlDerived | 60▲ | 59 |
| SpinDerived | 92 | 92 |
| ForgivenessDerived | 50 | 50 |
| Swing weight indexDerived | 48 | 49 |
| Core thicknessManufacturer Spec | 16 mm | 16 mm |
| Face materialManufacturer Spec | Raw carbon | Raw carbon |
| Core materialManufacturer Spec | Foam-injected polymer | Foam-injected polymer |
| ShapeManufacturer Spec | Hybrid | Hybrid |
| LengthManufacturer Spec | 16.2" | 16.2" |
| WidthManufacturer Spec | 7.7" | 7.7" |
| Handle lengthManufacturer Spec | 5.5" | 5.5" |
| Static weightManufacturer Spec | 7.78 oz | 7.8 oz |
| Balance pointDerived | 22.2 cm | 22.2 cm |
| ThermoformedManufacturer Spec | Yes | Yes |
| USAP approvedManufacturer Spec | Yes | Yes |
| ReleasedManufacturer Spec | 2026 | 2025 |
These two are hard to separate
Every derived index is within a few points. Our scores come from spec sheets, and spec sheets can't capture feel — at this margin the honest answer is that you should demo both rather than trust a number.
Analysis
Where they actually differ
Only differences big enough to matter are listed. Anything inside the margin of an estimate is left out.
- Price
- Ronbus Quanta R4 is $50 cheaper at MSRP.
Choose the
GRUVN MUVN 16HD Full Foam
- You prefer the brand or the feel
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