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MK1004507
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 MK1004507
O-Ring Drive Chain
- Includes: NICHE Front and Rear Sprocket Set with Drive Chain Kit
- Compatible with the following brands: KTM
- Compatible with the following models: 950, 990, 1090, 1190, 1290
- Replaces for the following OEM MPN's: 519-KCS0979K-K001
- Front Sprocket Teeth: 17
- Rear Sprocket Teeth: 42
- Chain Model: 525V
- Chain Links: 118
- Chain Pitch: 525 (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
Jamie
Reviewed in the United States on September 7, 2024
Evert thing bolted right up looked good, road good, sounded good till I hit just over 2k miles and I hurd the chain slap I thought no biggie just a little stretch in a new chain went to tighten my chain and found all the teeth on the rear sproket almost gone
Matthew M.
Reviewed in the United States on August 29, 2024
Would not recommend if you’re a aggressive adventurer rider I put this set up on my ktm1290 barley 3000 miles sprocket was shot out and I ended up snapping the chain after replacing the rear sprocket and it did damage to my bike and thankfully I’m ok it could of been a lot worse
Milller
Reviewed in the United States on April 24, 2023
Been riding over 40 years and NEVER had a chain break till this thing. Less than 1000 miles and it snapped in half, not at the master but the chain itself.
spyder man
Reviewed in Canada on October 25, 2022
Unfortunately my sprockets and chain are wearing out prematurely. Bike has less than 3500 kms and looks like they will be worn out very soon. Not sure if this is representative of the brand or not but mine is wearing out quickly.
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