Eibach ERS Platinum 16-Inch Rear Racing Spring, 3.50-Inch Outside Diameter, 145 lb/in - P1600.350.0145

Eibach PLATINUM series race springs are engineered using our proprietary ultra-high tensile strength steel, for the lowest physical weights and maximum spring travel. More Travel / Deflection than Standard Racing Coil Springs

• The Eibach ER Platinum Springs will Maintain Their Dimensions and Rates to Incredibly Tight Tolerances, Lap after Lap, Race after Race
• Flat-Ground End Configuration with Parallel Tolerance to +/-1 Degree
• Ultra Light-Weight Using High Tensile Steel
• Block Resistant - No Loss in Spring Height!

The Eibach ERS Platinum P1600.350.0145 rear racing spring is engineered for competitive motorsports applications where consistent performance, reduced weight, and maximum suspension travel are essential. Built from proprietary ultra-high tensile strength steel, this Eibach Platinum Series spring delivers more travel and deflection than standard racing coil springs while maintaining precise spring characteristics under demanding track conditions.

Designed to preserve its dimensions and spring rate lap after lap, the Eibach ERS Platinum spring helps provide predictable suspension response throughout a race. Its block-resistant construction is engineered to prevent loss of spring height, while the flat-ground end configuration supports proper seating and consistent alignment. The spring’s lightweight design reduces unsprung mass without sacrificing durability, making it a practical choice for race teams, performance builders, and drivers seeking repeatable suspension behavior.

The Eibach P1600.350.0145 features a 145 lb/in spring rate, a 16-inch free length, and a 3.50-inch outside diameter. Parallel end tolerances are controlled to within plus or minus 1 degree for reliable fitment and load distribution. This automotive racing spring is intended for custom suspension setups, including applications where vehicle-specific fitment data is determined by the builder or race technician. Professional installation and suspension setup are recommended.

What's Included

• One Eibach ERS Platinum rear racing spring

Fitment

Vehicle-specific fitment data was not provided. Confirm free length, outside diameter, spring rate, suspension travel, and perch compatibility before installation. This spring is intended for race and custom performance applications.

Product Specifications and Technical Data

• Brand: Eibach
• Series: ERS Platinum
• Part Number: P1600.350.0145
• Application: Rear racing suspension spring
• Spring Rate: 145 lb/in
• Free Length: 16 inches
• Outside Diameter: 3.50 inches
• End Configuration: Flat-ground ends with parallel tolerance to plus or minus 1 degree

Features:

• Ultra-High Tensile Steel: Proprietary high-strength steel construction reduces physical weight while supporting maximum spring travel.
• Consistent Spring Rate: Maintains dimensions and spring rates to tight tolerances for predictable performance from lap to lap.
• Increased Suspension Travel: Provides more travel and deflection than standard racing coil springs for demanding track applications.
• Block-Resistant Construction: Helps prevent loss of spring height during repeated compression and extended race use.

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Units Per Sku: 1