Sunstar Rear Sprocket Aluminum 38t-420 Black — Lightweight Performance Gear

SKU: FJMF_5-145738BK
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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 Sunstar

Sunstar engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Sunstar lineup with fast shipping and expert fitment support — order with confidence.

Sunstar Aluminum Rear Sprocket 38t-420

Optimize your motorcycle's power delivery with the Sunstar 38t-420 Aluminum Rear Sprocket. Precision-machined from high-strength aluminum alloy, this sprocket is designed to reduce unsprung weight, allowing for faster acceleration and improved suspension response. The 38-tooth count is ideal for riders looking to fine-tune their gear ratios for specific track conditions or street performance needs.

Technical Specifications

  • Material: Aerospace-grade aluminum for maximum durability and weight reduction.
  • Tooth Count: 38T, perfect for performance-oriented gear ratios.
  • Pitch: 420, compatible with standard performance chains.
  • Finish: Hard-anodized black coating for increased wear resistance and a sleek aesthetic.

Sunstar is a world-renowned leader in sprocket manufacturing, and this aluminum rear sprocket is a testament to their commitment to quality. The advanced tooth profile ensures smooth power transfer and minimal friction, extending the life of both your chain and sprocket. Whether you are competing on the track or upgrading your street bike, this sprocket provides the reliability and performance gains you expect from a top-tier component. Its lightweight design helps reduce rotational mass, which directly translates to better handling and quicker off-the-line performance. Enhance your drivetrain efficiency and style with this premium component from GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Sunstar

Sunstar engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Sunstar lineup with fast shipping and expert fitment support — order with confidence.

Sunstar Aluminum Rear Sprocket 38t-420

Optimize your motorcycle's power delivery with the Sunstar 38t-420 Aluminum Rear Sprocket. Precision-machined from high-strength aluminum alloy, this sprocket is designed to reduce unsprung weight, allowing for faster acceleration and improved suspension response. The 38-tooth count is ideal for riders looking to fine-tune their gear ratios for specific track conditions or street performance needs.

Technical Specifications

  • Material: Aerospace-grade aluminum for maximum durability and weight reduction.
  • Tooth Count: 38T, perfect for performance-oriented gear ratios.
  • Pitch: 420, compatible with standard performance chains.
  • Finish: Hard-anodized black coating for increased wear resistance and a sleek aesthetic.

Sunstar is a world-renowned leader in sprocket manufacturing, and this aluminum rear sprocket is a testament to their commitment to quality. The advanced tooth profile ensures smooth power transfer and minimal friction, extending the life of both your chain and sprocket. Whether you are competing on the track or upgrading your street bike, this sprocket provides the reliability and performance gains you expect from a top-tier component. Its lightweight design helps reduce rotational mass, which directly translates to better handling and quicker off-the-line performance. Enhance your drivetrain efficiency and style with this premium component from GGCRACING.

Product Details

Product Description

About Sunstar

Sunstar engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Sunstar lineup with fast shipping and expert fitment support — order with confidence.

Sunstar Aluminum Rear Sprocket 38t-420

Optimize your motorcycle's power delivery with the Sunstar 38t-420 Aluminum Rear Sprocket. Precision-machined from high-strength aluminum alloy, this sprocket is designed to reduce unsprung weight, allowing for faster acceleration and improved suspension response. The 38-tooth count is ideal for riders looking to fine-tune their gear ratios for specific track conditions or street performance needs.

Technical Specifications

  • Material: Aerospace-grade aluminum for maximum durability and weight reduction.
  • Tooth Count: 38T, perfect for performance-oriented gear ratios.
  • Pitch: 420, compatible with standard performance chains.
  • Finish: Hard-anodized black coating for increased wear resistance and a sleek aesthetic.

Sunstar is a world-renowned leader in sprocket manufacturing, and this aluminum rear sprocket is a testament to their commitment to quality. The advanced tooth profile ensures smooth power transfer and minimal friction, extending the life of both your chain and sprocket. Whether you are competing on the track or upgrading your street bike, this sprocket provides the reliability and performance gains you expect from a top-tier component. Its lightweight design helps reduce rotational mass, which directly translates to better handling and quicker off-the-line performance. Enhance your drivetrain efficiency and style with this premium component from GGCRACING.

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