BikeMaster Yamaha Rear Steel Sprocket 520 50T Black — Fits 1999-2021 YZ WR Series

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Bike Master

Bike Master is the powersports parts catalog of choice — chains, sprockets, batteries, tools, and accessories for street bikes, dirt bikes, ATVs, and snowmobiles. The brand independent dealers stock for fast service.

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High-Strength 520 50T Rear Steel Sprocket for Yamaha

Maximize your Yamaha's potential with the BikeMaster 520 50T Rear Steel Sprocket. Specifically designed for YZ and WR models, this sprocket is the perfect upgrade for riders looking to balance durability with aggressive gearing. The 50-tooth setup provides excellent torque for quick acceleration out of corners, making it a favorite for motocross and enduro riders alike.

Technical Advantages

  • Pitch: 520
  • Tooth Count: 50T
  • Material: High-tensile hardened steel
  • Finish: Protective black coating
  • Compatibility: Optimized for Yamaha YZ125, YZ250, YZ450F, and WR series.

Unlike lightweight aluminum sprockets that wear down quickly, this steel unit is built to withstand the harshest conditions. The hardened steel construction resists tooth hooking and deformation, ensuring your chain stays properly tensioned for longer periods. Its sleek black finish adds a professional look to your bike while providing essential protection against rust and trail debris. Whether you are hitting the track on a YZ250F or exploring trails on a WR450F, this sprocket offers the reliability you need to ride hard with peace of mind. Invest in your bike's performance and longevity with this premium drivetrain component from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2005-2009 Yamaha TTR230 Base
2011-2016 Yamaha TTR230 Base
2007-2021 Yamaha WR250F Base
2001-2002 Yamaha WR426F Base
2003-2021 Yamaha WR450F Base
1999-2021 Yamaha YZ125 Base
2020-2021 Yamaha YZ125X Base
1999-2021 Yamaha YZ250 Base
2015-2021 Yamaha YZ250FX Base
2016-2021 Yamaha YZ250X Base
2000-2002 Yamaha YZ426F Base
2003-2021 Yamaha YZ450F Base
2016-2021 Yamaha YZ450FX Base

Product Details

Product Description
Part Numbers
Sizing & Fit

About Bike Master

Bike Master is the powersports parts catalog of choice — chains, sprockets, batteries, tools, and accessories for street bikes, dirt bikes, ATVs, and snowmobiles. The brand independent dealers stock for fast service.

Watch in action

High-Strength 520 50T Rear Steel Sprocket for Yamaha

Maximize your Yamaha's potential with the BikeMaster 520 50T Rear Steel Sprocket. Specifically designed for YZ and WR models, this sprocket is the perfect upgrade for riders looking to balance durability with aggressive gearing. The 50-tooth setup provides excellent torque for quick acceleration out of corners, making it a favorite for motocross and enduro riders alike.

Technical Advantages

  • Pitch: 520
  • Tooth Count: 50T
  • Material: High-tensile hardened steel
  • Finish: Protective black coating
  • Compatibility: Optimized for Yamaha YZ125, YZ250, YZ450F, and WR series.

Unlike lightweight aluminum sprockets that wear down quickly, this steel unit is built to withstand the harshest conditions. The hardened steel construction resists tooth hooking and deformation, ensuring your chain stays properly tensioned for longer periods. Its sleek black finish adds a professional look to your bike while providing essential protection against rust and trail debris. Whether you are hitting the track on a YZ250F or exploring trails on a WR450F, this sprocket offers the reliability you need to ride hard with peace of mind. Invest in your bike's performance and longevity with this premium drivetrain component from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2005-2009 Yamaha TTR230 Base
2011-2016 Yamaha TTR230 Base
2007-2021 Yamaha WR250F Base
2001-2002 Yamaha WR426F Base
2003-2021 Yamaha WR450F Base
1999-2021 Yamaha YZ125 Base
2020-2021 Yamaha YZ125X Base
1999-2021 Yamaha YZ250 Base
2015-2021 Yamaha YZ250FX Base
2016-2021 Yamaha YZ250X Base
2000-2002 Yamaha YZ426F Base
2003-2021 Yamaha YZ450F Base
2016-2021 Yamaha YZ450FX Base

Product Details

Product Description

About Bike Master

Bike Master is the powersports parts catalog of choice — chains, sprockets, batteries, tools, and accessories for street bikes, dirt bikes, ATVs, and snowmobiles. The brand independent dealers stock for fast service.

Watch in action

High-Strength 520 50T Rear Steel Sprocket for Yamaha

Maximize your Yamaha's potential with the BikeMaster 520 50T Rear Steel Sprocket. Specifically designed for YZ and WR models, this sprocket is the perfect upgrade for riders looking to balance durability with aggressive gearing. The 50-tooth setup provides excellent torque for quick acceleration out of corners, making it a favorite for motocross and enduro riders alike.

Technical Advantages

  • Pitch: 520
  • Tooth Count: 50T
  • Material: High-tensile hardened steel
  • Finish: Protective black coating
  • Compatibility: Optimized for Yamaha YZ125, YZ250, YZ450F, and WR series.

Unlike lightweight aluminum sprockets that wear down quickly, this steel unit is built to withstand the harshest conditions. The hardened steel construction resists tooth hooking and deformation, ensuring your chain stays properly tensioned for longer periods. Its sleek black finish adds a professional look to your bike while providing essential protection against rust and trail debris. Whether you are hitting the track on a YZ250F or exploring trails on a WR450F, this sprocket offers the reliability you need to ride hard with peace of mind. Invest in your bike's performance and longevity with this premium drivetrain component from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2005-2009 Yamaha TTR230 Base
2011-2016 Yamaha TTR230 Base
2007-2021 Yamaha WR250F Base
2001-2002 Yamaha WR426F Base
2003-2021 Yamaha WR450F Base
1999-2021 Yamaha YZ125 Base
2020-2021 Yamaha YZ125X Base
1999-2021 Yamaha YZ250 Base
2015-2021 Yamaha YZ250FX Base
2016-2021 Yamaha YZ250X Base
2000-2002 Yamaha YZ426F Base
2003-2021 Yamaha YZ450F Base
2016-2021 Yamaha YZ450FX Base

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