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LithiumBatteryz

Suzuki GSXS 1000FZ Battery

2019–2020. The OEM battery case the GSXS 1000FZ takes, the lithium that drops into it, and every model year we have on file. One case across the whole run. Also written GSX-S1000FZ or GSXS1000FZ.

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2020 Suzuki GSXS 1000FZ

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OEM battery
YT12A-BSYuasa 2026 OEM guide
Case family
YTZ1012V starter case
Fits all years
2019–2020same case every year on file

The Suzuki GSXS 1000FZ takes the YT12A-BS case. The Antigravity ATZ-10 RE-START is a drop-in for that case: 360 cranking amps, 2.6 lb, a built-in jump start that saves enough charge to get you home.

See the Antigravity ATZ-10

GSXS 1000FZ battery by model year

2019–2020Your year · 2020OEM batteryYT12A-BS12V starter caseWhere it comes fromYuasa 2026 OEM guideAntigravity fitment list agreesLithium that fitsAntigravity ATZ-10 RE-START →Antigravity ATZ-10-HD RE-START →Ionic S4 →

Trim covered: GSXS 1000FZ.

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What the GSXS 1000FZ needs, in plain English

Every GSXS 1000FZ from the first 2019 model through 2020 starts on the YT12A-BS case, a 12-volt starter battery. Suzuki ships it with a lead-acid battery that starts to fade after two or three seasons of short rides and off-season storage, and that is usually the day a rider goes looking for something better.

The lithium drop-in is the Antigravity ATZ-10 RE-START: 360 cranking amps, 2.6 pounds, the same case in lithium. Its RE-START function puts the battery to sleep before a parasitic draw can drain it, then wakes it with one press for a jump start. Charge it with a lithium-compatible charger or maintainer for the off-season and it outlasts the lead-acid battery it replaces by years.

What size battery does a Suzuki GSXS 1000FZ take?+
The YT12A-BS case, the same one on every GSXS 1000FZ from 2019 to 2020. The Antigravity ATZ-10 RE-START is the lithium drop-in for it.
Will a lithium battery work in a GSXS 1000FZ without changes?+
Yes, on a bike with a healthy charging system: the lithium battery uses the same case, the same posts and the same cables, and it drops in where the lead-acid battery sat. Bikes older than about 2000 should have their voltage regulator and rectifier checked first, since a failing one overcharges any battery and lithium tolerates it less. Fill any gap in the tray with the foam spacers most lithium motorcycle batteries include.
Do I need a different charger for a lithium motorcycle battery?+
Use a charger or maintainer with a lithium (LiFePO4) mode. A lead-acid trickle charger can push the wrong voltage profile, and a desulfation mode can damage a lithium pack. A lithium-profile maintainer over the off-season keeps it topped without harm, and the battery loses only a few percent of charge a month sitting on its own.