Whiteline Grip Series Stage 1 Handling Kit for 2015-2021 Subaru WRX / STI (GS1-SUB007)

Fits select 2015-2021 Subaru WRX and WRX STI models. This Whiteline Grip Series Stage 1 Handling Kit (GS1-SUB007) is an engineered suspension solution designed to eliminate body roll, improve turn-in response, and provide a lowered stance without compromising daily ride quality. By replacing flexible factory components with precision-engineered hardware, this kit delivers a more connected feel during high-speed cornering and lane changes.

• Lowering Springs: Progressive rate springs provide a consistent 15mm drop front and rear. Front springs are rated at 6.1kg/mm (329lb/in) and rears at 5.8kg/mm (325lb/in).
• Adjustable Sway Bars: Features a 26mm 2-point adjustable front bar and a 22mm 3-point adjustable rear bar, allowing for fine-tuned chassis balance.
• High-Strength End Links: Heavy-duty steel ball joint links eliminate the flex of OE plastic/thin-walled units and allow for up to 25mm of on-car length adjustment to remove sway bar preload.
• Advanced Bushing Technology: Synthetic elastomer bushings feature internal bore knurling and grease retention lips to ensure long-term lubrication and silent operation.
• Complete Installation Hardware: Includes DIY lateral locks to prevent sway bar walking, forged ends for maximum strength, and extreme pressure molybdenum disulphide (LM) grease.

Each component is finished with protective plating or powder coating to resist corrosion in harsh environments. The kit is designed to work seamlessly with factory dampers and includes a detailed installation guide.