Piggyback shocks sometimes have an internal floating piston that separates oil and nitrogen. But more commonly, a rubber bladder reservoir holds the gas separately. This air bag tank is less likely to leak than a separate piston seal.

Main features：

• Ensure oil and gas separation and avoid foaming

• Actively prevent cavitation and improve overall impact performance

• Provides consistent damping for optimal traction and control

• Helps extend shock absorber life

Material： NBR, HNBR