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MK1004625
About NICHE
NICHE specializes in the highest quality Powersports replacement parts. Our parts meet or exceed the quality of the original parts that come with your machine. Some of the NICHE product categories include cylinders, brake pads, axles, off-road mirrors, and drive chains. Let NICHE components fix your machine today!
NICHE Drive Sprocket and Chain Set MK1004625
X-Ring Drive Chain
- Includes: NICHE Front and Rear Sprocket Set with Drive Chain Kit
- Compatible with the following brands: BMW
- Compatible with the following models: F650, F650GS, G650GS
- Replaces for the following OEM MPN's: 27712345857,9Y582-28111-00,9Y582-36111-00,23002343191,27717700154,27717700397
- Front Sprocket Teeth: 16
- Rear Sprocket Teeth: 47
- Chain Model: 520V-X
- Chain Links: 112
- Chain Pitch: 520 (15.875mm)
NICHE DRIVE SPROCKET
What is a Drive Sprocket?
- Sprockets are rotating parts with teeth that are used in conjunction with a chain to transmit power
- In order for sprockets and chain to be compatible with each other they must both have the same thickness and pitch.
- In order for the sprockets and chain to work effectively, all of the sprockets should be on parallel shafts with their corresponding teeth on the same plane.
Parts of a Sprocket
- Number of Teeth - The total number of teeth (projections) around the whole circumference of a sprocket
- Pitch Diameter (PD) - An imaginary circle which is traced by the center of the chain pins when the sprocket rotates while meshed with a chain
- Pitch - The amount of pitch diameter in inches per tooth. Gears with a larger pitch will have bigger teeth
When to Replace?
- Check how well the chain meshes with the sprocket teeth. In a healthy chain and sprocket combo, the individual chain rollers align perfectly with the spaces between the sprocket teeth and fit down into those U-shaped grooves evenly
- Look closely at the sprocket teeth to see if they have become sharp at the tips and/or slightly curled. The teeth on a new sprocket are straight and have a flat or domed shape at the tip, If the teeth are sharp, the sprocket is worn
Drive Chain Types
Pros:
- Lightweight
- Best for racing
- No loss of power
- Little to no friction
Cons:
- Wears quickly
- Stretches faster
- No internal lubrication
Pros:
- Longer Life
- Great sealant
- Internal lubrication
Cons:
- Heavy
- Most friction
- Less horsepower
Pros:
- Low friction
- Longest lifespan
- Internal lubrication
- Increased efficiency over O-Ring
Cons:
- Heavy
- Expensive
Eric Cormier
Reviewed in Canada on July 18, 2023
Au moins un des pignons est défectueux, ce qui fait que la chaîne est tendue ou détendue de façon alternée. Il a fallu que mon garage commande deux autres pignons (un petit et un grand).Je déconseille l'achat de ce produit, car le contrôle de qualité n'est pas fait sérieusement.
Zach
Reviewed in the United States on June 27, 2023
If you want to be stranded 6 hours from home because all of the teeth disintegrated and you have to drive home in your wife’s car and back to get a trailer and miss half of your family vacatio
Ty
Reviewed in the United States on June 24, 2023
Less than 2k miles and it left me stranded as all the teeth decided to shear off. 5 hours from home. Middle of the desert near moab.Here, take my lesson so you don't have to learn your own.
Danel J.
Reviewed in the United States on May 24, 2023
No funciona en la BMW f650gs
Justin Bigford
Reviewed in the United States on September 17, 2022
I originally gave this a great review for customer service. After about 2500 miles this thing locked up on me. The chain had stretched and the teeth sheared off. My only saving grace was I was only 3 miles from home and was in a harbor freight parking lot. I have another one of their chains that is new at the house and just chucked it in the trash. I would not trust this product to keep you safe on the road.
John H Gray
Reviewed in the United States on July 8, 2022
Do not waste your money on this product. I purchased and installed it on my BMW 2007 F650GS. Within the first 500 miles the chain stretched significantly and I noticed sprocket wear. After the next 1,000 miles it was streatched that much again and the sprocket was showing significant wear. The picture shows the worn sprocket ontop of a new sprocket and the wear is significant. Quality sprocket and chain were installed and they are at 8,500+ miles with very little stretch and no sprocket wear.
Tprkpr
Reviewed in the United States on January 23, 2021
Worked on my 2007 F650 GS Dakar perfectly. Just remember the 32mm socket for the final drive!
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