BMW Motorcycle Alternators
If it weren’t for your alternator, your motorcycle would be an oversized paperweight. After all, that's what produces the great part of the electricity your ride uses -- including the juice that starts it in the first place. However, motorcycle alternators are not like the ones found in cars and SUVs.
Put simply, an alternator produces power by generating alternate current (AC). This power is what charges and powers the electrical components while your motorcycle is running. A motorcycle alternator is often called a stator, which is a simpler type of alternator. It's accompanied by a regulator, or rectifier, and is usually considered part of the engine.
The stator is made of three parts: the rotor, stator, and field coil. The AC is generated when the rotor rotates around the stator as your bike runs. The stator has spokes around it, with copper coils encircling each spoke. When magnets on the rotor rotate around magnets on the stator, a current is produced. The regulator converts that AC power into direct current (DC) power that the battery can store, while also ensuring the correct amount of voltage is delivered.
How to Spot a Failing Alternator
Since the battery can't power the motorcycle on its own, you run the risk of getting stranded by the side of the road if your alternator fails. Signs include a misfiring engine, difficulty starting your motorcycle, dimming lights, and a poorly performing engine. If you experience any of these symptoms, you'll need to check your charging system to determine the source of the problem.
We're Your Best Source When Shopping for Genuine OEM Alternators Online
Your manufacturer makes the best alternators for your motorcycle, since they designed them specifically for your model. Our online parts store has everything you need for the project in stock and ready to ship, so buy now to get back on the road and riding safely!
- BMW-Motorrad:
- K 100,
- K 100 LT,
- K 100 RS,
- K 100 RT,
- K 1100 LT,
- BMW-Motorrad:
- R 1250 GS,
- R 1250 GS Adventure,
- R 1250 R,
- R 1250 RS,
- R 1250 RT
- BMW-Motorrad:
- K 1,
- K 100,
- K 100 LT,
- K 100 RS,
- K 100 RT,
- BMW-Motorrad:
- M 1000 R,
- M 1000 RR,
- S 1000 R,
- S 1000 RR
- BMW-Motorrad:
- F 750 GS,
- F 850 GS,
- F 850 GS Adventure,
- F 900 R,
- F 900 XR
- BMW-Motorrad:
- G 310 GS,
- G 310 R
- BMW-Motorrad:
- R 100 /T,
- R 100 CS,
- R 100 GS,
- R 100 GS Paris-Dakar,
- R 100 R,
- BMW-Motorrad:
- K 1200 GT,
- K 1200 LT,
- K 1200 RS
- BMW-Motorrad:
- R 1200 RT
- BMW-Motorrad:
- F 650 GS,
- F 700 GS,
- F 800 GS,
- F 800 GS Adventure,
- F 800 GT,
- BMW-Motorrad:
- R 1200 GS,
- R 1200 GS Adventure,
- R nineT,
- R nineT Pure,
- R nineT Racer,
- BMW-Motorrad:
- R 1150 RT,
- R 1200 C,
- R 1200 C Independent,
- R 1200 C Montauk,
- R 1200 CL
- BMW-Motorrad:
- G 450 X
- BMW-Motorrad:
- K 1300 R,
- K 1300 S,
- K 1600 B,
- K 1600 GT,
- K 1600 GTL,
- BMW-Motorrad:
- K 1200 GT,
- K 1300 GT
- BMW-Motorrad:
- R 1100 S,
- R 1150 GS
- BMW-Motorrad:
- G 650 Xchallenge,
- G 650 Xcountry,
- G 650 Xmoto
- BMW-Motorrad:
- HP2 Enduro,
- HP2 Megamoto,
- R 1200 GS,
- R 1200 R,
- R 1200 S
- BMW-Motorrad:
- R 1200 GS Adventure,
- R 1200 RT,
- R 900 RT 05 SF
- BMW-Motorrad:
- R 18,
- R 18 Classic
- BMW-Motorrad:
- G 310 GS,
- G 310 R
- BMW-Motorrad:
- HP4,
- HP4Race,
- S 1000 R,
- S 1000 RR
- BMW-Motorrad:
- K 1100 LT,
- K 1100 RS,
- K 75,
- K 75 RT,
- K 75 S,
- BMW-Motorrad:
- F 650 CS,
- F 650 GS,
- F 650 GS Dakar
- BMW-Motorrad:
- G 650 GS,
- G 650 GS Sertao
- BMW-Motorrad:
- R 18 B,
- R 18 Transcontinental
- BMW-Motorrad:
- R 1200 GS,
- R 1200 GS Adventure,
- R 1200 R,
- R 1200 RS
- BMW-Motorrad:
- S 1000 XR
- BMW-Motorrad:
- R 1200 R,
- R 1200 RT,
- R 900 RT 10 SF
- BMW-Motorrad:
- K 1200 R,
- K 1200 R Sport,
- K 1200 S
- BMW-Motorrad:
- S 1000 XR
- BMW-Motorrad:
- K 1300 S
- BMW-Motorrad:
- R 1100 GS,
- R 1100 R,
- R 1100 RS,
- R 1100 RT,
- R 1100 S,
- BMW-Motorrad:
- M 1000 R,
- M 1000 RR
- BMW-Motorrad:
- G 310 GS,
- G 310 R
- BMW-Motorrad:
- S 1000 R,
- S 1000 RR
- BMW-Motorrad:
- G 310 GS,
- G 310 R
- BMW-Motorrad:
- K 1,
- K 100,
- K 100 LT,
- K 100 RS,
- K 100 RT,
- BMW-Motorrad:
- S 1000 XR
- BMW-Motorrad:
- R 1100 GS,
- R 1100 R,
- R 1100 RS,
- R 1100 RT,
- R 850 R
- BMW-Motorrad:
- R 1100 GS,
- R 1100 R,
- R 1100 RS,
- R 1100 RT,
- R 1100 S,
- BMW-Motorrad:
- R 1100 GS,
- R 1100 R,
- R 1100 RS,
- R 1100 RT,
- R 1100 S,
- BMW-Motorrad:
- HP4,
- HP4Race,
- S 1000 R,
- S 1000 RR
- BMW-Motorrad:
- C 400 GT,
- C 400 X
- BMW-Motorrad:
- F 900 R,
- F 900 XR
- BMW-Motorrad:
- R 18,
- R 18 B,
- R 18 Classic,
- R 18 Transcontinental
- BMW-Motorrad:
- G 310 GS,
- G 310 R
- BMW-Motorrad:
- K 1,
- K 100,
- K 100 LT,
- K 100 RS,
- K 100 RT,
- BMW-Motorrad:
- R 1100 GS,
- R 1100 R,
- R 1100 RS,
- R 850 R
- BMW-Motorrad:
- K 1,
- K 100,
- K 100 LT,
- K 100 RS,
- K 100 RT,
- BMW-Motorrad:
- C 400 GT,
- C 400 X
- BMW-Motorrad:
- F 750 GS,
- F 850 GS,
- F 850 GS Adventure
- BMW-Motorrad:
- G 310 GS,
- G 310 R
- BMW-Motorrad:
- C 600 Sport,
- C 650 GT,
- C 650 Sport
- BMW-Motorrad:
- G 450 X
- BMW-Motorrad:
- S 1000 RR
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