ISC Suspension N1 Basic Coilover Kit – 2015+ Subaru WRX / WRX STI (VA)

The ISC Suspension N1 Basic is ISC's entry-level performance coilover kit for the 2015+ Subaru WRX and WRX STI — a fully height-adjustable, damping-adjustable coilover system engineered to deliver a meaningful improvement in handling precision and stance over the factory suspension, at a price point that makes quality coilovers accessible to a wider range of WRX and STI owners. Built on ISC's proven N1 platform, the Basic kit provides the core adjustability that matters most for street and occasional track use — independent ride height adjustment and damping force tuning — in a package that installs directly onto the VA-chassis WRX and WRX STI without modification. For 2015+ WRX and STI owners who want a genuine suspension upgrade with real adjustability at a competitive price, the ISC N1 Basic is the starting point.

Key Features:

• Height adjustable — independent ride height adjustment via the lower bracket allows the WRX or STI to be set at the ideal height for the owner's combination of stance, clearance, and handling goals without compromising spring preload
• Damping force adjustable — adjustable damping force allows tuning of ride and handling character between street-comfort and performance-oriented settings
• N1 platform construction — built on ISC's proven N1 coilover platform, engineered for street performance use with a focus on drivability, adjustability, and long-term reliability
• VA-chassis specific — engineered for direct bolt-on fitment to the 2015+ Subaru WRX and WRX STI (VA chassis) suspension geometry
• Street-focused tuning — spring rates and damper tuning optimized for street and light track use — a meaningful upgrade over factory suspension without sacrificing daily drivability
• ISC Suspension quality — manufactured by ISC Suspension, a North American coilover brand with a strong reputation for value, fitment accuracy, and customer support

Performance Benefits:

• Ride Height Adjustment: Lower bracket height adjustment allows the 2015+ WRX or STI to be set at the ideal ride height for the owner's goals — lowering the centre of gravity, reducing body roll, and improving the visual stance of the VA chassis without compromising spring preload or damper stroke. The ability to fine-tune ride height independently of spring preload is a key advantage over lowering springs, which offer no adjustability once installed
• Damping Adjustment: Adjustable damping force gives WRX and STI owners the ability to tune the suspension's response character between softer street settings and firmer performance settings — adapting the suspension to different road conditions, driving styles, and occasional track use without requiring a full damper swap
• Improved Handling Precision: The N1 Basic's stiffer spring rates and optimized damper tuning reduce body roll, improve turn-in response, and sharpen the handling balance of the WRX and STI compared to the factory suspension — delivering a more connected, confidence-inspiring driving experience on both road and track
• Stance and Aesthetics: Proper ride height adjustment eliminates the factory wheel gap and achieves the aggressive, planted stance that defines a well-built WRX or STI — a visual upgrade that complements the chassis's performance character
• Value Proposition: The N1 Basic delivers the core adjustability of a quality coilover system — height and damping adjustment — at a price point that makes it accessible to WRX and STI owners who want a genuine suspension upgrade without the cost of a fully featured competition coilover kit

Specifications:

• Brand: ISC Suspension
• Part Number: ISCS020B-S
• Series: N1 Basic
• Height Adjustment: Yes — lower bracket independent adjustment
• Damping Adjustment: Yes — adjustable damping force
• Application: 2015+ Subaru WRX / WRX STI (VA chassis)
• Spring Rate (Front/Rear): Refer to ISC Suspension product documentation for application-specific spring rates

Fitment Information:

• 2015–2021 Subaru WRX (VA) — FA20DIT turbocharged
• 2015–2021 Subaru WRX STI (VA) — EJ257 turbocharged
• Note: Verify fitment for your specific model year and any existing suspension modifications before ordering. Confirm compatibility with your wheel and tyre package — lowered ride height may require wheel spacers or arch rolling depending on offset and tyre width.
• Installation: Professional installation by an experienced suspension technician strongly recommended. A four-wheel alignment is required after installation.

What's Included:

• ISC Suspension N1 Basic coilover kit — complete front and rear set (ISCS020B-S)
• All required hardware for installation
• ISC adjustment spanner wrench

Installation Notes:

• Professional installation by an experienced suspension technician strongly recommended
• A four-wheel alignment is mandatory after installation — do not drive at speed before alignment is completed
• Set initial damping to a mid-range setting and adjust from there based on driving feel and preference
• Check all fastener torque after the first 500km of driving and re-torque as needed
• Inspect coilover hardware and fasteners at each service interval

N1 Basic vs. N1 Street Sport — Which Is Right for You?

ISC Suspension offers the N1 platform in multiple configurations for the 2015+ WRX and STI. The N1 Basic is the entry-level option — providing height and damping adjustability at the most accessible price point, optimized for street use with occasional track days. The N1 Street Sport steps up with higher spring rates, more damping range, and features oriented toward more aggressive street and track use. For WRX and STI owners who primarily drive on the street and want a quality coilover upgrade with genuine adjustability at a competitive price, the N1 Basic is the correct starting point. For owners who regularly track their car or want a more aggressive suspension tune, the N1 Street Sport or higher-tier ISC options may be more appropriate.

Why Upgrade to Coilovers?

The factory 2015+ Subaru WRX and WRX STI suspension is a capable platform — but it is tuned for a broad range of drivers and driving conditions, with ride height, spring rates, and damper tuning that prioritize comfort and compliance over outright handling performance. For WRX and STI owners who want to extract more from the VA chassis — whether on a back road, a track day, or simply a more engaging daily drive — a quality coilover system like the ISC N1 Basic delivers the adjustability, spring rate, and damper control that the factory suspension cannot provide. The ability to set ride height and adjust damping force transforms the WRX and STI from a capable performance car into a genuinely driver-focused machine.

The 2015+ Subaru WRX / WRX STI Platform:

The 2015+ Subaru WRX and WRX STI (VA chassis) represent the most refined iteration of Subaru's iconic turbocharged AWD performance platform — with a stiffer chassis, improved suspension geometry, and a more driver-focused interior compared to the previous GR/GV generation. The VA WRX's FA20DIT turbocharged flat-four and the STI's EJ257 are both well-supported engines with strong aftermarket ecosystems, and the VA chassis's MacPherson strut front and multi-link rear suspension geometry responds well to coilover upgrades. ISC's N1 Basic is engineered specifically for the VA chassis's suspension geometry and spring perch dimensions, delivering a bolt-on coilover solution that respects the platform's inherent balance while significantly raising its performance ceiling.

Why ISC Suspension?

ISC Suspension is a North American coilover brand with a strong reputation for delivering quality, fitment-accurate coilover systems at competitive price points — with a product lineup covering a wide range of Japanese and domestic performance platforms. ISC's engineering focus on correct fitment, accessible adjustability, and long-term reliability has made them a popular choice for enthusiasts who want a genuine coilover upgrade without the premium price of top-tier competition brands. Their customer support and warranty coverage are consistently well-regarded in the WRX and STI community, making ISC a trusted choice for owners making their first coilover purchase.

Perfect For:

• 2015+ WRX and WRX STI owners making their first coilover upgrade from the factory suspension
• Street builds where a lower, more aggressive stance and improved handling are desired without sacrificing daily drivability
• Owners who want genuine height and damping adjustability at a competitive price point
• Occasional track day and autocross use where reduced body roll and improved turn-in are priorities
• Complete suspension builds pairing the N1 Basic with upgraded sway bars, end links, and alignment for a comprehensive chassis upgrade

Pro Tip: After installation and alignment, spend time dialing in your damping settings across a range of road conditions before committing to a final setting. Start at mid-range damping and make single-click adjustments in each direction — the difference between settings is most noticeable on imperfect road surfaces and during aggressive cornering. Most street-focused WRX and STI owners find their preferred setting in the softer half of the adjustment range for daily driving, moving firmer for track days.

Note: A four-wheel alignment is required after installation. Verify fitment for your specific VA-chassis WRX or STI model year before ordering. Professional installation strongly recommended.