ProRate Rear Shock Spring - 350/400 x 55mm, Black

The ProRate Spring is designed to fit both Jade and Jade X rear shock models, offering the longest spring life of any lightweight steel spring on the market.

• Up to 125lbs. of progressive rate coil; great for big-hit support, aggressive riders or linear linkage designs
• Lightweight and high-quality Japanese steel
• Retains spring-rate up to 1,000,000 compressions