Optional heavy-duty internal gear set for the R1B gear differential. This set replaces the standard plastic sun and planet gears, as well as the cross pins.

Key Features and Specifications:

• R1 Wurks genuine option part
• Lightweight 7075 T6 aluminum cross pins with hard anodizing
  

Includes:

• x2 Cross pin, Aluminum 

Fits:

• R1B
• B7