DRIVER MODEL REFERENCE
Titleist TSi4 (2021–2022 archive)
TSi4 driver: 425 cc head in 8°, 9° and 10° at a 58.5° standard lie.
Published loft options8.0, 9.0, 10.0°
Published lie58.5°
Published head volume425 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 | 8.0, 9.0, 10.0 ° |
| Published lie | 58.5 ° |
| Published head volume | 425 cc |
Source: Titleist TSi4 manufacturer archive specifications. Reviewed 2026-10-05.
Specifications by configuration
| Configuration | Published values |
|---|---|
| 8.0° head ↗ | Loft: 8.0 ° Lie: 58.5 ° Head volume: 425 cc |
| 9.0° head ↗ | Loft: 9.0 ° Lie: 58.5 ° Head volume: 425 cc |
| 10.0° head ↗ | Loft: 10.0 ° Lie: 58.5 ° Head volume: 425 cc |
Identifying the right model
- At 425 cc it is the smallest TSi driver in the catalog, 35 cc under TSi1 and TSi2.
What to check before using the reference
- Titleist's table describes a Classic Tour Pear shape, ATI 425 face, SureFit hosel and SureFit flat weight.
- The earlier TS4 measured 430 cc.
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.
Continue exploring drivers
TitleistDriver
GT280 Mini · 2025–2026 archive
Titleist lists one GT280 Mini head: 13.0° at a 56° lie and 43.5 in standard length.
13.0° Published loft optionsModel reference
TitleistDriver
TSR1 · 2023–2025 archive
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
TitleistDriver
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
TitleistDriver
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