Brian Crower BC1100 Valve Springs for 1990-06 Mitsubishi 4G63 Eclipse/Evo/Dodge

Vehicle Fitment

• 1990-1999 Mitsubishi Eclipse (1G/2G) 4G63T
• 2003-2006 Mitsubishi Lancer Evolution VIII/IX 4G63T
• 2003-2004 Dodge Neon SRT-4 2.4L Turbo

Features

• Single spring design for high-RPM stability
• Manufactured from high-grade chrome silicone alloy
• Proprietary processing procedures for consistent pressures
• Designed to prevent premature valve float
• Compatible with high-lift camshafts
• Precision wound for long-term, high-RPM usage
• Set of 16 springs for complete engine coverage
• Retainer compatibility with BC2100, BC2159, BC2160

Specifications

• Type: Single
• Free Length: 1.879"
• Outer Diameter: 1.100"
• Inner Diameter: 0.780"
• Seat Pressure: 1.550" @ 84 lbs
• Open Pressure: 1.000" @ 235 lbs
• Coil Bind: 0.935"
• Net Cam Lift: 0.520" / 13.2mm
• Retainer Compatibility: BC2100, BC2159, BC2160
• Spring Seat: OEM

Included Components

• 16x Single Valve Springs

Product Description

The Brian Crower BC1100 Valve Springs are engineered for high-performance applications, specifically designed to handle the demands of high-RPM engines. These springs are wound from premium chrome silicone alloy, ensuring durability and consistent pressure over extended periods of high-speed operation. The single spring design offers superior valve control, effectively preventing valve float and allowing for the use of high-lift camshafts.

Ideal for enthusiasts and racers looking to enhance their engine's performance, the BC1100 springs are compatible with the 1990-1999 Mitsubishi Eclipse (1G/2G), 2003-2006 Mitsubishi Lancer Evolution VIII/IX, and 2003-2004 Dodge Neon SRT-4 equipped with the 4G63T engine. These springs are designed to fit the OEM spring seat and are compatible with BC2100, BC2159, and BC2160 retainers, making installation straightforward without the need for additional modifications.