Flatout Suspension 12-19 BMW 3-Series [GR40]

DISCLAIMER: This is a made to order item. The lead time for this product is 4-8 weeks.

Flatout GR40 Coilovers for 2012-2019 BMW 3-Series

The Flatout GR40 Coilovers are engineered for 2012-2019 BMW 3-Series owners who want the perfect balance of daily driving comfort and rally-inspired off-road performance. Offering a 1–3 inch lift over stock, the GR40 provides the ground clearance needed for trails, rallycross, overland setups, and light off-road adventures, while maintaining smooth, controlled on-road handling.

Built with inverted front shocks and external reservoir rear shocks, the GR40 delivers strength, durability, and endurance for demanding conditions. Proprietary off-road valving with bypass pistons allows the shocks to remain soft at low speeds for comfort and firmer at high speeds for precise control. Soft-rate LPS 2.5 ID linear springs further enhance comfort without compromising off-road capability.

The kit features OEM-style top mounts to reduce NVH, electroplated shock bodies with 7–10 years of corrosion resistance, and a rebuildable design for long-term serviceability. Front and rear shocks are fully adjustable, with 20 points of rebound adjustment to tailor ride quality for your specific needs.

Flatout GR40 coilovers are ideal for daily drivers, weekend rally enthusiasts, or overland adventurers seeking a complete, all-in-one lift and suspension solution. The kit is backed by a 3-year warranty for peace of mind.

Key Features

• 1–3” lift over stock ride height

• Inverted front shocks for strength and stability

• External reservoir rear shocks for improved cooling and endurance

• Proprietary off-road valving with bypass pistons (soft at low speeds, firm at high speeds)

• Soft-rate LPS 2.5 ID linear springs for comfort and performance

• OEM-style top mounts to reduce NVH

• Electroplated shock bodies for 7–10 years corrosion resistance

• Rebuildable shock design for long-term serviceability

• 1-way rebound adjustable with 20 points of adjustment

• Complete coilover replacement kit

• Backed by 3-year warranty

Benefits

• Smooth and comfortable on pavement for daily driving

• Rally-proven strength for off-road and competitive use

• Complete replacement kit—no need for spacer lifts or mixed spring/shock setups

• Adjustable and customizable for full gear loads, rooftop tents, or spare tire carriers

• Durable and rebuildable design for long-term reliability

FITMENT

2012-2019 BMW 3-Series