EBC Apollo Big Brake Kit for Subaru Impreza, WRX STI, Forester, Legacy and Outback | BBK054

Give your Subaru more confidence at the brake pedal

A Subaru you enjoy driving deserves brakes that feel equally capable. The EBC Apollo BBK054 upgrades the front of the listed applications with six-piston calipers and 355 x 32 mm floating discs, with Bluestuff pads in the road kits. It is a substantial caliper-and-disc conversion, with both 5 x 100 and 5 x 114.3 applications retained in the fitment detail below.

Kit reference: BBK054. Exact SKUs for every available configuration are listed below.

A meaningful upgrade beyond the pad compound

The reinforced caliper body helps keep the response precise under pressure, while the floating disc ring can expand independently as braking temperatures rise. That gives you a clear reason to upgrade the complete front assembly. Match the exact Subaru application and bolt pattern as well as the wheel clearance, so the right hardware backs up the driving experience you want.

Calipers made for the way you use your car

The road calipers are designed, manufactured and assembled in the UK from heat-treated, low-pressure cast aluminium. Their two-piece bodies use grade 12.9 bridge bolts, with hard-anodised aluminium pistons, stainless-steel bleed nipples and wear plates. The material and construction put substance behind the appearance of the upgrade.

External dust boots keep road dirt and debris away from the pistons, with high-temperature EPDM fluid seals behind them. A hard-anodised body gives corrosion protection beneath the high-temperature colour coating, while the single pad-retention bolt allows quick pad changes when servicing is due.

Choose your kit

This BBK054 offer uses 355 x 32 mm front discs and 6-piston calipers. Match the vehicle and original brake details below, then check the exact wheel-clearance template before selecting the caliper configuration.

Black, Blue, Red and Yellow are the painted road-caliper choices, with external dust boots and aluminium pistons. Choose the finish you want to see behind your wheels without changing the kit specification for that version.

Race competition is a different hardware and pad specification: hard-anodised calipers, stainless-steel castellated pistons and RP-X race pads. It is intended for dedicated track and race use, rather than chosen as another paint colour.

Road-kit front pads: Version 1: Bluestuff.

Bluestuff combines cold bite for road use with capability for lighter track work. Dedicated racing asks something different of a pad; use the competition specification where that is the car's purpose.

What is included

With the painted road configurations you receive:

• Two Apollo front calipers in the selected road colour
• Two fully floating two-piece front discs to the selected kit specification
• Front brake pads (Version 1: Bluestuff)
• Stainless-steel braided brake lines
• Vehicle-specific mounting brackets and fitting hardware
• 1 litre of BF307+ Super DOT 4 brake fluid

The Race competition front brake assembly combines Apollo competition calipers, fully floating two-piece discs to the selected specification and RP-X race pads.

Technical specifications

Kit options and SKUs

Vehicle fitment

Match your vehicle, engine, year and any brake-package notes in the table. Disc measurements in this fitment table describe the original brakes; the new kit dimensions are listed under Technical specifications and in the SKU table.

Application years can vary by engine and kit option; check the detailed rows for your vehicle.

View detailed engine, year and fitting information (45 application rows)

Fitting and looking after your brakes

Have the kit fitted by a qualified brake specialist. The installation needs clean, sound mounting surfaces, the correct hardware and torques, proper bleeding, and clearance checks through steering and suspension movement. Dust-shield removal or modification can be part of fitting; keep any vehicle-specific instructions in the application table with the job.

The road kit is designed around the original master cylinder and rear brakes. If you have changed the master cylinder or rear brake arrangement separately, have your installer check compatibility and brake balance before ordering.

Follow the fitting instructions and the bedding procedure for the supplied pad compound before demanding full performance. When rear components are supplied, fit them as part of the intended brake upgrade. Inspect pad and disc condition regularly, especially during circuit use, and keep the hydraulic system in good condition.