# ACT Subaru 04-20 WRX STI Mod Twin HD Street Kit Sprung Mono-Drive Hub Torque Capacity 700ft/lbs

T1S-S05 Mod-Twin 225 HD Sprung Street Kit is designed for high powered AWD street cars. It unites uncompromised pedal feel, durability, engagement quality with very high torque capacity by combining twice the organic friction surfaces with an ultra-durable spring center Mono-Drive hub in a completely modular design. Each diaphragm spring endures an exclusive four-stage heat treating process providing a consistent light pedal feel. Steel-backed Friction Plates with high quality organic friction materials deliver stable friction coefficient, good heat capacity and long clutch life. These Friction Plates uniformly transfer torque to the Mono-Drive sprung hub assembly which extends input shaft life and reduces driveline shock from torsional vibration. This kit includes a CNC-machined and 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 needed). Mod-Twin clutches are fully rebuildable and most components can be ordered separately.

-   "Excellence in Performance", backed by the best one-year warranty in the industry!

This Part Fits:

Year

Make

Model

Submodel

2004-2014

Subaru

Impreza

WRX STI

2007,2011-2014

Subaru

Impreza

WRX STI Limited

2010

Subaru

Impreza

WRX STI Special Edition

2015-2021

Subaru

WRX STI

Base

2015

Subaru

WRX STI

Launch Edition

2015-2021

Subaru

WRX STI

Limited

2019

Subaru

WRX STI

S209

2016

Subaru

WRX STI

Series.HyperBlue

2018

Subaru

WRX STI

Type RA

## Details

- **Price:** 2840.17 CAD
- **Vendor:** ACT
- **Type:** Clutch Kits - Multi

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2840.17 CAD | In stock |

## Images

- Photo - Primary
- Photo - out of package
- User 1
- Photo - out of package
- Photo - out of package
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/act-subaru-04-20-wrx-sti-mod-twin-hd-street-kit-sprung-mono-drive-hub-torque-capacity-700ft-lbs)
> Updated: 2026-07-03