DRIVER MODEL REFERENCE
Titleist TSi1 (2021–2023 archive)
TSi1 driver: 460 cc head in 9°, 10° and 12° at a 59° standard lie.
Published loft options9.0, 10, 12°
Published lie59°
Published head volume460 cc
Documented specifications & build options
Original manufacturer reference for this head. Men’s/women’s and steel/graphite length labels are kept as published.
| Field | Documented value |
|---|---|
| Published loft options | 9.0, 10, 12 ° |
| Published lie | 59 ° |
| Published head volume | 460 cc |
Source: Titleist TSi1 manufacturer archive specifications. Reviewed 2026-10-05.
Specifications by configuration
| Configuration | Published values |
|---|---|
| 9.0° head ↗ | Loft: 9.0 ° Lie: 59 ° Head volume: 460 cc |
| 10° head ↗ | Loft: 10 ° Lie: 59 ° Head volume: 460 cc |
| 12° head ↗ | Loft: 12 ° Lie: 59 ° Head volume: 460 cc |
Identifying the right model
- Within the TSi drivers here, only TSi1 lists 12° and a 59° lie; TSi2 lists 9° to 11° at 58.5°.
What to check before using the reference
- Titleist's table describes a Modern Aero shape, an ATI 425 titanium face, an ultra-thin titanium crown and a SureFit adjustable hosel.
- The page gives no standard length, so none is recorded.
Checking a club you own? These are the maker's published figures for an original build, not measurements of your club, and a source date is not the year it was made. Bending, reshafting or a hosel adjustment changes loft, lie and length, so identify the head by its own markings and have a fitter measure it when its history is unclear.
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TSR1 driver: 9°, 10° and 12° heads at 59° and 45.75 in, right- and left-handed.
9.0, 10.0, 12.0° Published loft optionsModel reference
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GT4 · 2024–2025 archive
GT4 driver: 8°, 9° and 10° heads at 58.5° and 45.5 in, right- and left-handed.
8.0, 9.0, 10.0° Published loft optionsModel reference
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GT3 · 2024–2025 archive
GT3 driver: 8° to 11° heads at 58.5° and 45.5 in, right- and left-handed.
8.0, 9.0, 10.0, 11.0° Published loft optionsModel reference