Dual steel ring sprocket, Yamaha Blue, 51 teeth, for Yamaha

【G2 Ergonomics 80-50-Yam-bl-51 Dual Steel Ring Sprocket Yamaha Blue 51 Teeth for Yamaha by BONSIMOTO】
We bring you the results of four years of development with GNCC factory racers.
While there are many options for rear sprockets, G2 offers an advanced hybrid sprocket with an aluminum inner and steel outer.
To maximize the bond between materials, they are overlapped and riveted using a unique, patented manufacturing process. The result is a strong yet lightweight product.
Features
More durable than aluminum, lighter than steel
7075 aluminum inner and C49 (JIS) high-carbon steel outer
Aluminum and steel are joined to achieve unparalleled strength
All processing such as mud grooves has been eliminated to maintain the strength of the outer ring
The steel outer is uniquely heat-treated to maintain durability
Compatible Models
YAMAHA
・YZ125(X)/250(X) (99-18)
・YZ250/450FX (15-18)
・YZ250/400/426/450F (99-18)
・WR250R/X (08-18)
・WR400/426/450F (99-18)
・TTR230 (05-18)
*All models are US specifications.
Specifications
Color: Yamaha Blue
Number of Teeth: 51
Notes
*Only the aluminum inner part can be selected for color. The steel outer is black only.
*The image is for illustration purposes, and the design and specifications of the product may change without notice. Thank you for your understanding.