Competition Clutch 06-11 Subaru WRX / 05-11 Legacy GT Stage 2-Steelback Brass Plus Rebuild Kit

If your 2006-2011 Subaru WRX or 2005-2011 Legacy GT already runs a Competition Clutch Stage 2 kit with the steel flywheel and the clutch is now slipping under boost, chattering on take-off or releasing high on the pedal, this is the service set built for it. Part number 15026-RK-2100 is the replacement-parts kit for the 15026-ST-2100 Stage 2 Steelback Brass Plus clutch. It lets you renew the wearing parts and keep the flywheel you already own.

What the Stage 2 rebuild kit does in a turbo Subaru

The 2100 series is Competition Clutch's street-performance setup. It pairs a performance pressure plate with a sprung disc faced in Brass Plus, a brass-based friction riveted to a steel backing that resists bursting at high rpm. The maker rates the 2100 kits at up to 80 percent more torque capacity than stock and aims them at aggressive street driving and moderate track use. The springs in the hub soak up driveline shock so the car still drives like a street car. This rebuild kit carries the same pressure plate and disc design, so a worn 2100 clutch goes back to its original clamp load and engagement feel. The product photo shows the pressure plate, the Brass Plus disc, a release bearing and an alignment tool. A flywheel is not part of it.

Symptoms of a worn Stage 2 clutch

• RPM climbs without road speed in third or fourth under full boost
• Clutch engagement point creeping toward the top of the pedal travel
• Chatter or judder pulling away, especially after hard launches or heat soak
• A burnt friction smell after spirited driving
• Release bearing noise that changes when you press the pedal

How to confirm before you buy

Rule out the hydraulics first. A sticking slave cylinder or air in the line can mimic slip or drag, and Competition Clutch's own instructions say to check the master and slave and bleed the system when a clutch will not release. Then do a high-gear pull at low rpm. If the revs flare as boost builds, the disc is worn or glazed. Compare repair costs with our automatic vs manual transmission repair cost breakdown before booking the job.

Fitment

The listing names the 2006-2011 Impreza WRX and the 2005-2011 Legacy GT, both cars with the 2.5-liter turbocharged EJ255. Wikipedia lists that engine in the WRX from 2006 through 2014 and in the Legacy GT from 2005 through 2012. Other catalogs for the 15026 family list the 2005-2009 Legacy GT only, and the 2010-up Legacy was a new generation, so confirm a 2010-2011 Legacy GT with us before ordering. The kit is designed around the 15026-ST-2100 kit. Read the part number on your current pressure plate, or send us your year and VIN. If you are starting from a stock clutch, the complete Stage 2 kit with steel flywheel is the better buy. If only the disc is worn and the pressure plate is healthy, the Stage 2 replacement disc costs less.

Install notes

• Competition Clutch requires the flywheel to be resurfaced or replaced and the pilot bearing replaced before the new clutch goes in, or the warranty is void. A lightweight steel flywheel is the alternative if yours is worn past spec.
• Clean the rust-inhibitor film off the pressure plate and flywheel faces with a residue-free cleaner.
• Grease the input shaft splines and the bearing guide tube with only a barely visible film. Excess grease flings onto the disc and ruins the facing.
• Use the alignment tool, and tighten the cover bolts in a cross pattern by hand. Do not use air tools.
• Do not let the gearbox hang on the input shaft while you mate it, or the disc can bend.
• Break the clutch in for 500 to 700 miles before hard use.

For a stock-feel repair instead, see the stock replacement kit with flywheel.

What is the difference between 15026-RK-2100 and 15026-ST-2100?

15026-ST-2100 is the complete Stage 2 kit with a steel flywheel. 15026-RK-2100 is the replacement-parts kit for it, so you renew the clutch parts without buying another flywheel.

Does this rebuild kit include a flywheel?

No. The photo shows the pressure plate, Brass Plus disc, release bearing and alignment tool. Resurface your existing flywheel or buy a new one separately.

Will it fit a 2010 or 2011 Legacy GT?

The listing includes 2010-2011, but other catalogs list this kit family for the 2005-2009 Legacy GT only, and the 2010 Legacy was a new generation. Send us your VIN and we will confirm before it ships.

Is the Stage 2 Brass Plus clutch streetable?

Yes. Competition Clutch builds the 2100 series for aggressive street use and moderate track use, with a sprung hub and smooth engagement.

Do I need to replace the pilot bearing?

Yes. Competition Clutch's instructions call for a new pilot bearing and a resurfaced or replaced flywheel on every install to keep the warranty valid.

How long is the break-in?

Drive normally for 500 to 700 miles before hard launches or track use, as the installation sheet directs.

• Automatic vs. Manual Transmission Repair Cost: What to Actually Expect