12in C/O Spring Extreme Travel 2.5in ID

The 12in C/O Spring Extreme Travel 2.5in ID from Eibach is a premium coil-over suspension spring engineered for serious enthusiasts and professional builders who demand maximum adjustability and performance from their vehicle's suspension geometry. This extreme travel coil spring is built for dedicated track-focused builds, lowered street cars, and off-road applications where conventional springs cannot accommodate the suspension travel and ride height flexibility required. Whether you're designing a full coil-over kit or upgrading an existing performance suspension system, this barrel-style spring delivers the consistency and reliability that modern vehicle modification demands.

Manufactured from high-grade steel with a durable red powder coat finish, the 12in C/O Spring Extreme Travel features a 2.5-inch inner diameter designed specifically for coil-over damper bodies and aftermarket shock assemblies. The 185 lb/in spring rate provides a balanced compromise between compliance on rough surfaces and adequate support under cornering loads, making it suitable for both street-tuned platforms and weekend warrior applications. At 12 inches in compressed length, this spring accommodates significant suspension travel without binding, while the extreme travel barrel design maintains consistent spring rates throughout the full compression and extension cycle, preventing the harshness and instability common to undersized or poorly-designed alternatives.

Mechanics and suspension specialists gravitate toward Eibach's XT (Extreme Travel) line when building custom coil-over systems for drift cars, rally platforms, and modified street vehicles requiring low ride heights with full shock absorber articulation. Installation requires proper spring compressor tools and coil-over body compatibility verification—confirm your damper's 2.5-inch ID bore before purchase. The 4.04 lb weight per spring ensures minimal unsprung mass contribution, critical for maintaining responsive handling and reducing suspension compliance issues during aggressive driving or uneven terrain exposure.