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KTM 250 SX-F Battery

2012–2027. KTM changed the 250 SX-F's battery once across the run. Pick your year and we show the case that year takes and the lithium that fits it. Change any box in the strip to look up another bike.

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2027 KTM 250 SX-F

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OEM battery
ATZ5-XManufacturer fitment list
Case family
ATZ5-X12V starter case
This battery fits
2023–2027other years take a different case

The KTM 250 SX-F takes the ATZ5-X case. The Antigravity ATZ5-X is a drop-in for that case: 170 cranking amps, 1 lb.

See the Antigravity ATZ5-X
Fits your bike
170CA
Antigravity ATZ5-X 12V Dirt Bike Battery 170CAStarter
Antigravity

Antigravity ATZ5-X 12V Dirt Bike Battery 170CA

12V·170CA·1 lb
$120
$160Save $40
3-yr warranty · Ships in 3-5 days

250 SX-F battery by model year

2012–2015OEM batteryYTX4L-BS12V starter caseWhere it comes fromYuasa 2026 OEM guideLithium that fitsAntigravity ATZ-7 RE-START →
2016–2017OEM batteryATZ5-X12V starter caseWhere it comes fromManufacturer fitment listLithium that fitsAntigravity ATZ5-X →
2018–2022OEM batteryATZ5-X12V starter caseWhere it comes fromManufacturer fitment listLithium that fitsAntigravity ATZ-7 RE-START →Antigravity ATZ5-X →
2023–2027Your year · 2027OEM batteryATZ5-X12V starter caseWhere it comes fromManufacturer fitment listLithium that fitsAntigravity ATZ5-X →

2 trims covered: 250 SX-F, 250 SX-F Troy Lee Designs.

Shop all KTM Dirt Bike batteries

Why the year matters on this one

The 250 SX-F is a dirt bike where the battery changed mid-run: 2012 to 2015 takes the YTX4L-BS and 2016 to 2027 the ATZ5-X. The plate above names the source for each year, and the table shows every run we have on file, so match the year to the case before you order.

For 2016 to 2027 that means the Antigravity ATZ5-X: 170 cranking amps, 1 pound, the same case in lithium. 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 KTM 250 SX-F take?+
It depends on the year: 2012 to 2015 takes the YTX4L-BS and 2016 to 2027 the ATZ5-X. For 2016 to 2027 that is the Antigravity ATZ5-X, the lithium drop-in for the ATZ5-X case. The table above shows every run we have on file, so match your year to the case before you order.
Will a lithium battery work in a 250 SX-F 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 dirt bike batteries include.
Do I need a different charger for a lithium dirt bike 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.