SKU: actT1S-S05 ACT Heavy Duty Mod Twin 225 Sprung Street Clutch Kit for 04-21 Subaru STI

ACT Heavy Duty Mod Twin 225 Sprung Street Clutch Kit for 04-21 Subaru STI

The T1S-S05 Mod-Twin 225 HD Sprung Street Kit is engineered for high-powered AWD street cars, delivering exceptional pedal feel, durability, and engagement quality. Designed with twice the organic friction surfaces and an ultra-durable spring center Mono-Drive hub, this modular system ensures very high torque capacity. The advanced diaphragm spring undergoes an exclusive four-stage heat treatment process, providing a consistently light pedal feel, while the steel-backed friction plates utilize high-quality organic materials for a stable friction coefficient, excellent heat capacity, and extended clutch life.

This kit uniformly transfers torque through the Mono-Drive sprung hub assembly, enhancing input shaft longevity and minimizing driveline shock from torsional vibration. Included components are a CNC-machined, dynamically balanced flywheel, pressure plate cover, diaphragm spring, face, puck-style ceramic friction plates, sprung Mono-Drive hub assembly, floater, patented Monoloc Collar, release bearing, alignment tool, and pilot bearing (if required). Fully rebuildable, the Mod-Twin clutches allow for individual component replacements as needed.

Experience unmatched performance and reliability with the T1S-S05 Mod-Twin 225 HD Sprung Street Kit, designed to meet the demands of high-performance street driving while ensuring long-lasting value.

Important Note About Vehicle Fitment

Our vehicle fitment selection tool is currently in development, and we’re working hard to ensure the accuracy of our data. While most models and trims should be correct, there may be some instances where fitment information is incomplete or an alternative option is available.

If you’re unsure about the compatibility of a part with your vehicle, please don’t hesitate to reach out to us for assistance. Our team is here to help you find the perfect fit!