ISC Suspension S006-S N1 Street Sport Coilover Kit

The ISC Suspension N1 Street Sport Coilover Kit is a premium, fully adjustable suspension system engineered for drivers who demand improved handling performance on both daily streets and weekend track days. Built entirely in-house by ISC, the N1 benefits from over a decade of development informed by drift competitors, road course racers, and street enthusiasts across Asia, Australia, and the USA.

Construction & Materials

• 6061-T6 Aluminum alloy brackets and adjustment locks — lightweight yet strong enough to handle spring and vehicle downforce
• High-rigidity steel piston rods valved to match your chosen spring rate and verified on a shock dyno for consistent performance
• SAE9254 sport springs — dyno tested over 500,000 compression cycles with less than 5% deformation
• ISC StreetSeal corrosion protection technology with anodized finish (ISC Gold or Black) to guard against surface rust and internal corrosion
• Powder-coated and salt-spray-coated threaded shaft for maximum street durability in harsh climates

Damper & Shock Design

• Monotube damper with high-pressure nitrogen gas for advanced driving stability and responsiveness
• 32-step damper adjustment — rebound and compression adjusted in unison via a single dial for easy tuning
• Larger cylinder and piston design improves driving stability and feel

Ride Height & Spring Preload

• Full-length ride height adjustment — 3 inches or more of drop on most applications
• Separate spring preload locks — preload is independent of ride height, so ride quality remains consistent regardless of how low you run the car

Included Upgrades (Standard on All N1 Kits)

• Pillowball upper mounts — included on every N1 for optimal steering response and handling precision
• Thrust bearing kit — included at no extra charge to eliminate spring bind, a common issue with aftermarket coilovers
• Adjustable front camber plates — included on vehicle applications where suspension geometry allows (see application guide)
• Brake line and mounting brackets welded onto bottom mounts on most applications for an OEM-style installation

Custom Spring Rates & Valving

• Available in Street Comfort, Street/Sport, or Track/Race configurations
• Custom spring rates available — shafts are individually valved and dyno-verified to match
• All custom coilover orders are hand-assembled at ISC's New Hampshire, USA facility

Certifications & Warranty

• SO9001:2000R Certified manufacturing process
• ARTC Certified
• 5-Year Warranty — all service, rebuilds, and warranty support handled at ISC's USA facility