Eibach 1200.300.0400S 12in 3in ID 400lb Silver Off-Road Spring

Vehicle Fitment

• Universal off-road coilover spring application
• Fits coilover and shock setups designed for 3.00 in. inner diameter springs
• Compatible with applications requiring 12.00 in. free length and 400 lbs/in spring rate
• Do not assign vehicle-specific fitment without confirming spring seat diameter, installed height, travel, and shock compatibility

Features

• Eibach Race Off-Road single coil spring
• Linear spring rate design for predictable suspension response
• 3.00 in. inner diameter for off-road coilover applications using this spring size
• 12.00 in. free length for longer installed-height and travel requirements
• 400 lbs/in spring rate for suspension tuning and load support
• Designed for off-road durability and repeatable performance
• Engineered for maximum travel with minimal block height
• Flat-ground ends for proper spring seating
• Silver powder-coated finish on reviewed listings
• Sold individually as a single spring

Specifications

• Brand: Eibach
• Part Number: 1200.300.0400S
• Product Line: Race Off-Road
• Spring Type: Linear coilover spring
• Inner Diameter: 3.00 in. / 76 mm
• Free Length: 12.00 in. / 305 mm
• Spring Rate: 400 lbs/in
• Spring Rate Metric: 70 N/mm / 7.14 kg/mm
• Block Height: 4.57 in. / 116 mm
• Travel: 7.43 in. / 189 mm
• Block Load: 2970 lbs / 13211 N
• Weight: 5.80 lbs / 2.63 kg
• Finish: Silver
• End Style: Flat ground
• Quantity: 1x single spring

Included Components

• 1x Eibach Race Off-Road coil spring

Product Description

The Eibach 1200.300.0400S is a Race Off-Road linear coil spring built for off-road and custom coilover applications that use a 3.00-inch inner diameter spring. With a 12.00-inch free length and 400 lbs/in spring rate, it is intended for suspension tuning where predictable rate control, long installed height, and repeatable performance are required. This is a universal spring sold individually, not a vehicle-specific lowering or lift kit.

Official Eibach product data confirms this part as a Race Off-Road single spring with 3.00-inch inner diameter, 12.00-inch length, 400 lbs/in rate, 4.57-inch block height, 7.43-inch travel, 2970 lb block load, and 5.80 lb weight. Additional trusted retailer listings align the same dimensional data and also identify the silver finish and flat-ground ends for this exact S-suffix part number. Because this is a universal spring, vehicle-specific fitment should never be assumed. Lift or drop height cannot be stated because installed ride height depends entirely on vehicle corner weight, motion ratio, preload, and shock configuration.