SuperSprings SSR-631-40 SumoSprings Solo Rear Bump Stop Upgrade Kit Blue

The SuperSprings SSR-631-40 SumoSprings Solo is a rear suspension enhancement designed as a direct upgrade to factory bump stops. This -40 density Blue SumoSpring is a one-piece unit that mounts on one side, delivering a smoother, more progressive spring rate without the complexity of traditional air bag systems.

Key Features:

• 1,400 lb load capacity at 50% compression — ideal for light to medium duty hauling and towing applications
• Blue -40 density micro-cellular urethane captures more air in its cellular bubbles, providing a smooth progressive spring rate suited for light and medium duty use
• Should not be compressed past 70% of original height to maintain full memory rebound
• Handmade from proprietary closed micro-cellular polyurethane — will not leak, rupture, or require airlines or compressors
• Maintenance-free — no adjustments, no inflation, no ongoing servicing required once installed
• Reduces rear-end sag, decreases vibration, stabilizes sway, and softens harsh rebounds
• Easy bolt-on installation — most vehicles come pre-drilled from the factory; no special tools or suspension modifications needed
• Designed specifically for vehicles equipped with factory suspension
• Manufactured in the U.S.A. and backed by a lifetime warranty

SumoSprings Solo kits are a proven, set-it-and-forget-it solution for drivers looking to improve ride comfort, reduce body sway, and increase load-carrying capability without the maintenance demands of air suspension systems.