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Yamaha Stryker Bullet Cowl Battery

2015. The OEM battery case the Stryker Bullet Cowl takes, the lithium that drops into it, and every model year we have on file. One case across the whole run.

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2015 Yamaha Stryker Bullet Cowl

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OEM battery
YTX20L-BSYuasa 2026 OEM guide
Case family
YTX20L12V starter case
Fits all years
2015same case every year on file

The Yamaha Stryker Bullet Cowl takes the YTX20L-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

Stryker Bullet Cowl battery by model year

2015Your year · 2015OEM batteryYTX20L-BS12V starter caseWhere it comes fromYuasa 2026 OEM guideAntigravity fitment list agreesLithium that fitsAntigravity ATX20 RE-START →Antigravity ATX20-HD →Ionic S6 →

2 trims covered: Stryker Bullet Cowl, Stryker Bullet Cowl XVS1300C.

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What the Stryker Bullet Cowl needs, in plain English

Every Stryker Bullet Cowl from the first 2015 model through 2015 starts on the YTX20L-BS case, a 12-volt starter battery. Yamaha 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 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.

What size battery does a Yamaha Stryker Bullet Cowl take?+
The YTX20L-BS case, the same one on every Stryker Bullet Cowl from 2015 to 2015. The Antigravity ATX20 RE-START is the lithium drop-in for it.
Will a lithium battery work in a Stryker Bullet Cowl 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.