Rear Sprocket Fit Yamaha MT-09 850 13-20 Steel JT JTR1876.47 Suzuki GSX-8S M3
(Please Check The Compatibility As The Product Fits Several Bikes)
The Final Link in Your Motorcycle's Power Delivery
The rear sprocket is the final, critical component that transforms the engine's rotational force into forward motion. Mounted on the rear wheel hub, this toothed disc works in perfect harmony with the front sprocket and the drive chain to transfer power from the engine to the road . Its size and condition directly influence the acceleration and top speed of your Yamaha MT-09 850.
When the rear sprocket teeth become worn from thousands of rotations, they can no longer mesh efficiently with the chain, leading to a loss of power, jerky acceleration, and even dangerous chain slippage . This Motorcycle Rear Sprocket is designed to restore that precise, efficient power transfer to your Yamaha MT-09 850. By choosing the correct tooth count for your setup, you can customise the final drive ratio to suit your riding style, exactly as the JT intended.
What the Rear Sprocket Does for your Yamaha
The rear sprocket is the point where mechanical energy is finally converted into the torque that propels you forward . It works in tandem with the front drive sprocket: as the engine turns the smaller front sprocket, the chain pulls on the larger rear sprocket, turning the rear wheel . This gearing ratio determines how your bike performs. A larger rear sprocket increases torque and acceleration, ideal for technical riding and quick getaways, while a smaller sprocket favours top speed and fuel efficiency for highway cruising .
Signs That You Need a New Rear Sprocket
Your your Yamaha MT-09 850 will often give you clear warnings when the rear sprocket needs attention. Watch for these tell-tale indicators :
"Hooked" or Sharp Teeth: The teeth have developed a hook-like shape or become pointed, rather than having a smooth, squared-off profile .
Chain Lifting: You can pull the chain away from the rear sprocket to reveal more than half of a tooth .
Unusual Noises: You hear a grinding or excessive vibration from the drivetrain while riding .
Slipping: The chain jumps or slips off the teeth under load .
Visible Wear: The sprocket shows significant wear, corrosion, or damage.
The Critical Role of Material Quality
The construction and material of a sprocket define its durability and performance. Most high-quality steel sprockets are made from heat-treated, hardened carbon steel (C45) or chromoly steel alloys for maximum longevity and wear resistance . For riders chasing performance and weight reduction, many aluminium rear sprockets are CNC-machined from 7075 aerospace-grade aluminium, offering significant weight savings and quicker handling . Some advanced designs, like the Supersprox-Stealth, use a bimetal construction with a steel tooth ring for durability and an aluminium centre for reduced unsprung mass .
This Motorcycle Rear Sprocket is constructed from high-quality materials, chosen for their strength, wear resistance, and ability to ensure consistent power transfer. It is engineered to meet or exceed the rigorous standards of the JT, providing the perfect fit and reliable performance for your Yamaha MT-09 850.
Why a Quality Sprocket Matters for your Yamaha
Using a substandard or worn rear sprocket on your Yamaha MT-09 850 is a risk you cannot afford. It will accelerate chain wear, reduce fuel efficiency, and can lead to a catastrophic drivetrain failure where the chain snaps or derails. It is always considered a best practice to replace the chain, front sprocket, and rear sprocket as a complete set .
The Benefits of a Fresh Motorcycle Rear Sprocket
Installing this Rear Sprocket on your Yamaha MT-09 850 brings immediate and tangible improvements:
Restored Power Transfer: Smooth, efficient acceleration and deceleration .
Enhanced Control: Precise gearing tailored to your riding style .
Drivetrain Protection: Prevents premature wear to the chain and front sprocket .
Durable Construction: Built from strong, heat-treated materials for long service life .
Ignoring a worn rear sprocket is a gamble that can lead to a broken chain and a dangerous lock-up of the rear wheel. Replacing the entire sprocket and chain set at the recommended interval is a smart investment in the performance and safety of your Yamaha MT-09 850.
Product Reference Information
Part Number: the JTR1876.47
Application: Specifically designed for your Yamaha MT-09 850
Give your Yamaha the precise and reliable performance it deserves. With this Motorcycle Rear Sprocket, you are ensuring your drivetrain runs smoothly, exactly as the JT intended.