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Buell 1125R Battery

2008–2011. Buell changed the 1125R'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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Make
Model
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2011 Buell 1125R

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OEM battery
ATX12Manufacturer fitment list
Case family
ATX1212V starter case
Fits all years
2008–2011same case every year on file

The Buell 1125R takes the ATX12 case. The Antigravity ATX12 RE-START is a drop-in for that case: 360 cranking amps, 3 lb, a built-in jump start that saves enough charge to get you home.

See the Antigravity ATX12
Fits your bike
360CA
Antigravity ATX12 12V Motorcycle Battery 360CA (w/ Re-Start)Starter
Antigravity

Antigravity ATX12 12V Motorcycle Battery 360CA (w/ Re-Start)

12V·360CA·3 lb
RE-START
$250
$330Save $80
3-yr warranty · Free Shipping
Also fits your bike · 1 more
480CA
Antigravity ATX12-HD 12V Motorcycle Battery 480CA (w/ Re-Start)StarterYTX12
Antigravity

Antigravity ATX12-HD 12V Motorcycle Battery 480CA (w/ Re-Start)

12V·480CA·3 lb
RE-START
$285
$380Save $95
3-yr warranty · Free Shipping

1125R battery by model year

2008–2010OEM batteryYTX14L12V starter caseWhere it comes fromYuasa 2026 OEM guideLithium that fitsAntigravity ATX12 RE-START →Antigravity ATX12-HD RE-START →Ionic S4 →
2011Your year · 2011OEM batteryATX1212V starter caseWhere it comes fromManufacturer fitment listLithium that fitsAntigravity ATX12 RE-START →Antigravity ATX12-HD RE-START →

Trim covered: 1125R.

Shop all Buell batteries

Why the year matters on this one

The 1125R is a motorcycle where the battery changed mid-run: 2008 to 2010 takes the YTX14L and 2011 the ATX12. 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 2011 that means the Antigravity ATX12 RE-START: 360 cranking amps, 3 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 Buell 1125R take?+
It depends on the year: 2008 to 2010 takes the YTX14L and 2011 the ATX12. For 2011 that is the Antigravity ATX12 RE-START, the lithium drop-in for the ATX12 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 1125R 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.