Harley-Davidson Sportster 1100 Battery
1986–1987. Harley-Davidson changed the Sportster 1100'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.
1987 Harley-Davidson Sportster 1100
- OEM battery
- YTX20-BSYuasa 2026 OEM guide
- Case family
- YTX2012V starter case
- Fits all years
- 1986–1987same case every year on file
The Harley-Davidson Sportster 1100 takes the YTX20-BS case. The Antigravity ATX20 RE-START is a drop-in for that case: 680 cranking amps, 4 lb, a built-in jump start that saves enough charge to get you home.
See the Antigravity ATX20
Sportster 1100 battery by model year
| Model years | OEM battery | Where it comes from | Lithium that fits |
|---|---|---|---|
| 1986 | OEM batteryATX2012V starter case | Where it comes fromManufacturer fitment list | Lithium that fitsAntigravity ATX20 RE-START →Antigravity ATX20-HD → |
| 1987Your year · 1987 | OEM batteryYTX20-BS12V starter case | Where it comes fromYuasa 2026 OEM guideAntigravity fitment list agrees | Lithium that fitsAntigravity ATX20 RE-START →Antigravity ATX20-HD →Ionic S6 → |
Trim covered: Sportster 1100 Standard XL1100.
Shop all Harley-Davidson batteriesWhy the year matters on this one
The Sportster 1100 is a motorcycle where the battery changed mid-run: 1986 takes the ATX20 and 1987 the YTX20-BS. 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 1987 that means the Antigravity ATX20 RE-START: 680 cranking amps, 4 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.