Competition Clutch 2013-2014 Scion FR-S/Subaru BRZ Stage 4 - 6 Pad Ceramic Clutch Kit * NO FW *

The Competition Clutch 15035-1620 is a Stage 4 Strip Series clutch kit for the 2013-2014 Scion FR-S and Subaru BRZ with the six-speed manual. It is built for cars that have gone well past stock power: a supercharged or turbocharged FA20, a car on E85, or a drag or time-attack build that launches hard. If the factory clutch or a Stage 2 disc flares the revs as boost builds in third, this is the kind of kit meant for that problem. The kit does not include a flywheel, as the title says.

What the Stage 4 clutch does in an FR-S or BRZ

The FR-S and BRZ are rear-wheel drive, so the clutch sits behind the FA20 boxer engine and drives the six-speed gearbox that feeds the driveshaft. The pressure plate bolts to the flywheel and squeezes one disc; the hydraulic release unloads it when you press the pedal. Competition Clutch rates the Stage 4 Strip Series at up to a 250 percent increase in torque capacity over stock. The disc is a six-paddle design with ceramic buttons on a sprung hub, so some driveline shock is still absorbed before it reaches the gearbox and rear axle. Ceramic handles repeated heat cycles that would glaze an organic disc, but it grabs quickly. Expect a short engagement window, some chatter at low speed and a learning curve on hill starts. A stock or bolt-on car is better matched to the Stage 2 or Stage 3 kits.

Symptoms that point to an overpowered clutch

• Engine speed jumps while road speed stays flat as boost comes on in third or fourth
• Burnt-clutch smell after launches, autocross runs or track sessions
• The car will not hold a full-throttle pull after a tune or boost increase
• Glazing, blue heat spots or cracks on the flywheel face at teardown
• Bearing noise that comes and goes as you press and release the pedal

How to confirm before you buy

Rule out the hydraulics first. A spongy pedal or low fluid can stop the clutch from fully releasing or fully clamping. Then do a controlled pull in fourth from low rpm to redline. If the tach climbs faster than the car accelerates, the disc is slipping. Also check for gear oil or engine oil at the bellhousing; oil on the disc causes slip at any power level. Our clutch slipping guide covers the test, and how to bleed a hydraulic clutch helps rule out a soft pedal.

Fitment

This listing is for the 2013-2014 Scion FR-S and Subaru BRZ. Competition Clutch's own application list for 15035-1620 is wider: 2013-2016 Scion FR-S, 2013-2020 Subaru BRZ and 2017-2020 Toyota 86. If your car falls outside 2013-2014, send us your year and VIN and we will confirm before it ships. It is not listed for the second-generation 2022-up BRZ or GR86 with the 2.4L engine. If your car already runs an aftermarket flywheel, tell us which one so we can check it against this pressure plate. More FR-S and BRZ clutches are in the rebuild kits and clutch category.

What is in the box

Per the Competition Clutch spec table: performance pressure plate, single 6-paddle ceramic disc, throwout bearing, pilot bushing and alignment tool. Flywheel included: no.

Install notes

• A six-puck disc needs a true, fresh friction surface. Resurface your flywheel or replace it; the Exedy 12.7 lb lightweight FR-S flywheel is one option. Read lightweight vs. stock flywheel first, because a light flywheel plus a ceramic disc makes takeoffs even more abrupt.
• Clean both friction faces with brake cleaner and keep grease off the disc.
• Center the disc with the supplied tool and tighten the pressure plate bolts in steps, in a star pattern, to the factory torque spec.
• Competition Clutch warns that excess grease can damage the disc and void the warranty; use only a thin film on the input splines and release fork contact points.
• Refill the gearbox with the gear oil grade listed in your owner's manual and bleed the clutch hydraulics until the pedal is firm.
• Break-in: shift as often as possible for the first 500 miles before any launches, per Competition Clutch.

For a street car with bolt-ons, the Competition Clutch Stage 2 FR-S/BRZ kit is far easier to drive. The Stage 3 segmented ceramic kit splits the difference.

Does the 15035-1620 fit a 2017-2020 Toyota 86 or BRZ?

Competition Clutch lists 15035-1620 for 2013-2016 FR-S, 2013-2020 BRZ and 2017-2020 Toyota 86. Our listing is titled 2013-2014, so send us your year and VIN and we will confirm for later cars. It is not listed for the 2022-up BRZ or GR86.

Is a flywheel included?

No. The kit has the pressure plate, 6-paddle ceramic disc, throwout bearing, pilot bushing and alignment tool. Reuse a resurfaced flywheel or buy one separately.

Is a Stage 4 clutch too much for a stock FR-S?

Usually yes. Competition Clutch builds the Stage 4 for high-horsepower and drag cars. On a stock or bolt-on car the quick, grabby engagement is hard to live with, and a Stage 2 is a better match.

Will it chatter?

Some chatter at low speed is normal with a six-puck ceramic disc, more so with a lightweight flywheel. The sprung hub helps, but it will not feel like a stock clutch.

What do I need to replace along with it?

Resurface or replace the flywheel, use the new throwout bearing and pilot bushing in the kit, and bleed the hydraulics. Check the slave cylinder and rear main seal for leaks while the gearbox is out.

How do I break it in?

Competition Clutch recommends shifting as often as possible during the first 500 miles so the disc material beds into the flywheel and pressure plate.

• How to Diagnose Transmission Slipping
• Shift Flare vs. Slip: How to Tell Them Apart
• Automatic vs. Manual Transmission Repair Cost