Toyota Corolla GR And Yaris GR Clutch Kits And Flywheels

Logo

Now Available | Single Disc, 725 Series Twin Disc Clutch Kit, Lightweight Flywheels, and Internal Hydraulic Release Bearing for 2023+ Toyota Corolla GR (and 2020+ GR Yaris) 1.6L Turbo 6-Speed Manual

 Toyota GR Corolla Clutch Masters aftermarket clutch kit and lightweight steel flywheel

It seems Toyota is just on a roll these days and giving automotive enthusiasts everything they ever hoped for! Allowing the MK5 Supra to be optioned with a manual, and finally, after years of leaving those of us in the US itching for something like the Yaris GR, they bring the Corolla GR to the table. With it’s 1.6L turbo 3-cylinder engine and AWD platform it is guaranteed to be a winner.

 

Since enthusiasts overseas have had several years now to enjoy a similar platform with the Yaris GR, the engine and drivetrain have proven to be incredibly capable and take modifications very well, with a few examples out there of cars making over 600whp on the stock block.

 

We know that there is going to be a wide range of users out there enjoying their Corolla GR or Yaris GR in vastly different ways. Some are enjoying them as daily driven street cars, while others are building them solely to be used and abused at the track. We are offering options for every Corolla and Yaris GR owner so they can still continue to enjoy their car the way they want to, but have faith knowing that their clutch is ready to handle whatever they want to throw at it.

Single Disc Clutch Kits

 

For many, a simple single disc clutch kit upgrade will be the ticket. With a plethora of friction materials for different power levels and types of driving we are confident we will have something to suit your needs. Our tried and true FX Series clutch kits have been proven time and time again to be reliable and consistent all while maintaining factory or just slightly heavier then factory pedal feel depending on the stage of clutch being installed.  

 

Clutch Masters single disc clutch kits are true high performance clutch systems which are technologically superior to anything currently on the market. By re-engineering the leverage, or fulcrum point on the pressure plate with our Hi-Leverage technique, we have been able to increase clamping power, often without changing pedal pressure. Our Hi-Leverage technology allows us to move the pressure plate leverage ring closer to the pivot point. Doing this has allowed us to solve the clamping vs. pedal pressure problem in a unique way. By moving the pressure ring pivot point, our Hi-Leverage Pressure Plates take mechanical advantage of the leverage principle. By moving the leverage ring closer to the pivot point as well as re-arching and precisely heat treating the clutch diaphragm, the pressure applied to the clutch disc is increased significantly without unnecessarily increasing pedal pressure, as is typically the case with other aftermarket clutch options. Moving the pivot point takes several extra steps to accomplish when manufacturing our clutches in order for them to work flawlessly with OEM stamped covers and is something we’ve perfected through over 40 years of our industry expertise.

 

In addition to our ability to increase clamping pressure without increasing pedal pressure, there are some other key advantages realized when using our Hi-Leverage technology. One serious problem associated with increased pedal pressure is it increases the chances of damaging the crank thrust bearing, inherently leading to crank-walk. Increased pedal pressure can put additional strain and fatigue on clutch linkages, throw out bearings and hydraulic systems causing them to fail prematurely.

 

All single disc clutch kit stages come as a complete kit including disc, pressure plate, throwout bearing, and alignment tool.

Lightweight Aluminum or Steel Flywheel

 

To accompany our single disc clutch kits, we also have lightweight steel and aluminum flywheels available. General rule of thumb is if you are still wanting a comfortable driving car without too much added harshness being trasnfered to the cabin from the gearbox, then go with a steel flywheel. If you are going to be primarily tracking your car or don’t mind some extra noise or vibrations then an aluminum flywheel is the ticket.

 

One thing to note is our single disc clutch kits will work with the factory flywheel. However since the factory flywheel is a dual mass flywheel, if you want to continue to use the OE flywheel and not opt for one of our lightweight steel or aluminum flywheels, you will need to specify this when ordering and we will spec the clutch kit out with a rigid hub disc instead of our sprung hub disc. We always see there are big gains to be made by ditching the OE dual mass flywheel so we feel most are going to want to go that route anyway.  

 

725 Series Twin Disc

 

For those of you that are trying to find the limits of the G16 and the Corolla and Yaris GR platform, we have our 725 Series Twin Disc. Our 725 Series is proven to handle setups making incredible amounts of power. This twin disc setup has been the ticket for smaller bellhousing cars like Toyota and Honda 4 cylinders for a long time now. From serious circuit racing to the drag strip and anywhere in between the 725 Series Twin will handle anything you dare throw at the 3-cylinder engine.

 

The 725 Series clutch is designed to handle well over 900 ft. lbs of torque with dual ceramic discs or up to 725 ft. lbs of torque with one ceramic and one of our organic Fiber-Tough material discs. These multi-disk clutch kits are designed to dissipate immense amounts of heat quickly and maintain as minimal rotational mass as possible so we primarily suggest them for track use only. However we source the highest possible quality friction material we can get our hands on, that makes the occasional street drive a possible option. Our 725 Series Twin Disc is paired with a lightweight steel flywheel.

 

The cover assembly is machined from billet aluminum and is then Type 3 hard anodized. Our billet covers have roughly 25% more tensile strength than the competition’s cast unit. By focusing our ability on machining the strongest cover possible while maintaining minimal weight, we are basically able to eliminate any flex in the cover. Our billet covers see only .003" of flex where as a cast or stamped unit can see as much as .030" of flex. By eliminating this flex in the cover, the driver is able to operate the clutch much more consistently and confidently. All the movement being applied to the diaphragm of the clutch from the throwout bearing is used solely to engage and disengage the clutch and isn't wasted by the cover flexing first. The strength of our covers also results in greater clamping force over the same amount of area vs. a cast or stamped cover. This means our twin discs are easy to drive and have superior clamping force to make sure all the power your engine is making is being utilized.

 

Our aluminum flywheels are machined from billet 6061-T6 aluminum to meet SFI spec 1.2 for competition in NHRA, NDRA, IDRC, IHRA, SCCA and NASA. Aluminum flywheels are Type 3 hard coat anodized to ensure their durability and performance lasts. Each aluminum flywheel includes a replaceable insert.

Internal Hydraulic Release Bearing

Our hydraulic release bearing is a bolt in setup and fits all clutch kits that are designed around the factory clutch heights, whether that is one of our clutch kits or any other kit out there. The factory hydraulic release bearing is a great unit and works wonderfully with our single disc clutch kits, however we have had feedback that when using a twin disc, our release bearing is an added benefit.