PowerStop KOE6977 Z17 OE Rear Brake Kit for 2015-2021 Subaru WRX without EyeSigh

Vehicle Fitment

• 2015 Subaru WRX (Sedan, all trims) - 2.0L Turbocharged FA20 I4, Symmetrical AWD
• 2016-2017 Subaru WRX (Sedan, all trims) - 2.0L Turbocharged FA20 I4, Symmetrical AWD, without EyeSight Technology
• 2018-2019 Subaru WRX (Sedan, all trims) - 2.0L Turbocharged FA20 I4, Symmetrical AWD, without EyeSight Technology
• 2020 Subaru WRX (Sedan, all trims) - 2.0L Turbocharged FA20 I4, Symmetrical AWD, with 2-piston front calipers, without EyeSight
• 2021 Subaru WRX (Sedan, all trims) - 2.0L Turbocharged FA20 I4, Symmetrical AWD, with 2-piston front calipers & 1-piston rear calipers, without EyeSight

Fitment Notes

• Rear axle only - pair with KOE4603 (front kit) for a complete OE brake replacement service
• EyeSight Technology is a critical fitment qualifier (2016-2021): this kit fits WRX models WITHOUT EyeSight only; WRX models equipped with EyeSight require KOE7039 instead
• Does NOT fit the Subaru WRX STI - the STI uses a Brembo brake system with larger, incompatible rotor dimensions
• Does NOT fit the 2022+ WRX (new platform with different brake specifications)
• All applicable models use Subaru Symmetrical AWD; the standard WRX brake package uses manual parking brake
• This is a Z17 OE stock-replacement kit - for a performance upgrade see K6977 (Z23) or K6932 (Z23, front and rear combo)

Features

• Z17 Evolution Plus ceramic brake pads are thermal scorched, chamfered, and slotted for fast, quiet break-in and consistently low brake dust output
• Multi-layer rubberized pad shims insulate noise for virtually silent braking under everyday driving conditions
• Autospecialty OE replacement rotors are precision-machined to strict OE tolerances for a smooth, vibration-free ride from the first stop
• G3000 grade cast iron construction with 100% mill balancing eliminates rotor runout and disc thickness variation out of the box
• Non-directional friction surface ensures correct pad seating during the break-in period
• Direct bolt-on replacement - fits all factory caliper and hub mounting locations with no modifications required

Specifications

• Position: Rear axle only
• Rear rotor diameter: 300mm (11.81 in.), vented
• Pad compound: Z17 Evolution Plus Ceramic (OE stock replacement formula)
• Rotor type: OE replacement, non-coated, mill-balanced
• Construction: G3000 grade cast iron
• Warranty: 24 months / 24,000 miles limited

Included Components

• 2x Rear OE replacement brake rotors
• 1x Rear Z17 Evolution Plus ceramic brake pad set
• 1x Stainless-steel installation hardware kit
• 1x High-temperature ceramic brake lubricant

Product Description

The PowerStop KOE6977 is a rear Z17 Autospecialty OE Replacement Brake Kit engineered for the 2015-2021 Subaru WRX on the VA platform - specifically for models without EyeSight Technology. The WRX's turbocharged FA20 engine and Symmetrical AWD deliver performance that demands quality brake components at all four corners. This kit restores factory rear braking performance using Autospecialty OE replacement rotors built to G3000 grade cast iron specifications and Z17 Evolution Plus ceramic pads that are thermal scorched for fast break-in and produce minimal dust under daily street use.

EyeSight Technology is the key fitment qualifier on 2016-2021 WRX models: vehicles equipped with EyeSight use a different rear brake specification (KOE7039) and this kit will not fit them. The WRX STI is also excluded - its Brembo brake system requires entirely different components. This kit covers the rear axle only and pairs directly with KOE4603 for a complete front-and-rear OE brake refresh. Owners seeking a performance step-up over the OE replacement level should consider the K6977 (Z23) rear kit or the K6932 front-and-rear Z23 combo kit instead.