Flatout Rear Overload Springs for 2010–25 Subaru Outback

The Flatout Rear Overload Springs are designed to eliminate rear sag and improve load-carrying capability for your 2010–25 Subaru Outback. Perfect for loaded vehicles, rooftop tents, or heavy rear accessories, these springs maintain your vehicle’s ride height and prevent bottoming out over bumps.

Constructed in the USA from ASTM A1000 Grade A SiCr steel, these linear rate springs are built for durability and reliability. With a ~25% stiffer spring rate than stock, they increase load capacity without altering ride height, making them the ideal complement to Trail Runner or OEM-spec suspensions.

Key Features

• Load-Capacity Boost → 330 lb/in spring rate (~25% stiffer than OEM)

• OEM Look → Black finish blends seamlessly with factory suspension

• Linear Rate Spring → Progressive and predictable under load

• Durable Construction → ASTM A1000 Grade A SiCr spring, lifetime warranty

• Precision Specs:

  • Wire diameter: 0.55"

  • Outer diameter: 4.40"

  • Total coils: 8.80

  • Free length: 14.0"

  • Block height: 5.98"

• Sold in Pairs → Complete set for both rear corners

• 0” Lift → Maintains ride height, only increases load handling

• Made in the USA

Compatibility

• 2010–2025 Subaru Outback

• Fits OEM spec rear shocks including Bilstein, KYB, OEM, or equivalent

The Flatout Rear Overload Springs are the perfect solution for outback adventurers and overlanders who frequently carry heavy loads. Keep your Subaru Outback level, stable, and confident — even fully loaded.