This clutch kit for Yaris GR is mostly for track or race use. From the factory the Yaris GR has a double mass flywheel. The ATS flywheel is single mass and approximately 5kg lighter.
The ATS carbon clutches are very well known in the world with its unsurpassed torque delivery, durability, smoothness to drive and easiness to the transmission.
Torque rating: 100kgm (1'500kg clamping force)
Installation hardware included.
Thanks to its superior properties, our damper-less carbon disk has shock-absorbing capability that is ten times higher than that of a disk with a damper. Because weight reduction is desirable in a center hub, ours has the most lightweight damper-less design. It consists of a main body composed of a carburized chrome-molybdenum material and an ultra-thin piano wire to anchor the disk.
Made of a unique friction material developed by ATS & ACROSS. The enormous strength created by our non-mesh random-weaving method will prevent damage during driving. The ultra light carbon disk changes controllability and acceleration characteristics. The clutch has excellent friction characteristics even when cold so that it is always free of slippage at full acceleration and feels strong and stable. It also provides very smooth engagement.
To attain high precision, we use our unique large-scale dedicated machining process capable of performing all fabrication processes (from lathe turning to gear tapping) in one chucking. This makes excellent dynamic balance possible. Optimal weight is determined based on the vehicle type and usage. In combination with its highly rigid cover, our flywheel is very resistant to distortion.
Our clutch uses a carbon disk with a diameter of 230mm, while its external size is kept equivalent to our competitor's products. This is made possible by minimizing the thickness of the casing without sacrificing the required strength.. For weight reduction and carbon dust removal, the side of the casing has holes around its entire circumference. This casing anchored to the cover and flywheel with 40 bolts. This design maximizes the rigidity of the clutch and supports heat-resistance and stable operation.
The optimal amount of mass inhibits thermal distortion, and the carbon treatment improves characteristics during the initial break-in period. This reduces initial abrasion and stabilizes performance at half clutch.
The center plates are totally re-designed for the Spec II for increasing the durability of the clutch with the high leverage ratio.
The diaphragm is carefully designed to prevent cracks caused by concentration of stress and fatigue-induced damage from repeated clutch operation. Together with the pressure plate at its optimally-determined size, the diaphragm provides ideal clamping power and work strokes.
The Spec II is available in single diaphragm spring for a lighter-than-stock pedal effort.
By using the valuable feedback data from repeated road tests, we have created a pressure plate that takes full advantage of our friction material properties. The light pedal feel and the clamping force suitable for a carbon clutch are achieved together.
The pressure plate is totally re-designed for Spec II for a higher leverage ratio.
Our clutch cover has greater rigidity established by aluminum forging and shot peening. The cover houses a carbon disk that has the world's largest diameter of 230mm. At the same time, the external size of the clutch is kept equivalent to our competitor's products. As many as 20 bolts secure the whole structure, which increases the rigidity and the rotation precision of the entire clutch.