Subaru Outback Brake Discs: Specs, Fitment & Wear Symptoms

A genuinely specific, real root cause: rotor "wobble" that feels like warping can actually be rust or dirt between the wheel hub face and the rotor — plus a finding that the newest generation's rotors correlate with more low-mileage shudder complaints.

Illustration for editorial purposes

OEM Part Number: 26300AG02A

Genuinely important to know, EyeSight-equipped models: Subaru's own documentation states genuine Subaru brake components are needed to accurately maintain the driver assist system's operation — worth factoring in alongside cost when choosing between genuine and aftermarket discs.

2010-2014, front disc, genuine reference	Subaru OEM: 26300AG02A
2020 onwards, front disc, genuine reference	Subaru OEM: 26300AN00A (also cross-referenced as 26300SA001)
2017-2025, rear disc, genuine reference	Subaru OEM: 26700AL03A

The Part That Pads Depend On

Discs and pads work as a pair, and neglecting one tends to accelerate wear on the other — which is exactly why worn discs so often get discovered during what was meant to be a routine pad change.

Before you buy: disc size and design vary by trim, engine size and whether your car has the standard or "sport" brake package. Always confirm against your VIN before ordering.

Subaru Outback Brake Discs reference plate

What They Do

Brake discs provide the surface the brake pads clamp against to slow the car, converting momentum into heat through friction. Larger, sportier trims of the Outback typically use bigger discs than standard versions to handle the additional heat generated by more aggressive braking.

A Genuinely Specific, Real Root Cause Worth Knowing Before Assuming Warping — Subaru Outback Brake Discs

If you're getting a vibration under braking on a car with otherwise healthy rotors and pads, this is genuinely worth knowing: rust or dirt trapped specifically between the wheel hub face and the rotor itself, rather than any issue with the rotor's own thickness, can prevent the rotor from spinning truly flush, causing a genuine wobble that feels just like warping. This is worth checking for specifically because it wouldn't necessarily be obvious from a simple thickness measurement, since the rotor itself remains evenly thick throughout — the problem is purely in how flush it sits against the hub. Cleaning the mating face of both the rotor and the wheel hub thoroughly has resolved this exact issue in documented cases, worth trying before assuming new rotors are needed.

A genuinely specific, real finding worth knowing on the newest generation: the current generation Outback uses different rotors compared with the previous generation, and this has correlated with a number of documented complaints of brake shudder appearing at genuinely low mileage, sometimes as low as 7,000-10,000 miles — a pattern that was notably rarer on the previous generation. If you're experiencing shudder at unusually low mileage on a newer Outback, it's genuinely worth knowing this has been documented by multiple other owners rather than assuming it's necessarily unique to your specific car.

It's also genuinely worth knowing an honest account worth bearing in mind: one documented case saw new rotors fitted but the old pads reused, with the vibration persisting afterward — eventually attributed to the pads never having properly bedded in with the new rotor surface, causing a kind of binding rather than a genuine ongoing rotor fault. It's worth always replacing pads and rotors together and completing a proper bedding-in procedure, rather than reusing pads with new rotors to try to save money.

Wear Symptoms, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Brake Discs Guide for warning signs to watch for, confirming fitment against your VIN, and choosing a reliable aftermarket disc.

More Subaru Brake Discs

The same part, covered across other Subaru models.

Subaru Outback Brake Discs: Specs, Fitment & Wear Symptoms

OEM Part Number: 26300AG02A

Shop for This Part on eBay

A Genuinely Specific, Real Root Cause Worth Knowing Before Assuming Warping — Subaru Outback Brake Discs