SKU: 51845118080

ACT 04-20 WRX STI Mod Twin HD Race Kit Unsprung Hub Torque Cap 895ft/lbs Not For Street Use

Sale price$921.15 Regular price$1023.50
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Ships within 48 hours · Estimated delivery Sep 8 - Sep 13

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Description

ACT 04-20 WRX STI Mod Twin HD Race Kit Unsprung Hub Torque Cap 895ft/lbs Not For Street UseT1R S07 Mod Twin 225 HD Rigid Race Kit tackles aggressive launches and rapid shifting of high powered AWDs by combining twice the ceramic friction surfaces with a no nonsense solid 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. Puck style Friction Plates with high quality ceramic friction materials deliver high friction coefficient,

T1R-S07 Mod-Twin 225 HD Rigid Race Kit tackles aggressive launches and rapid shifting of high powered AWD’s by combining twice the ceramic friction surfaces with a no-nonsense solid 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. Puck-style Friction Plates with high quality ceramic friction materials deliver high friction coefficient, superior heat capacity, and long clutch life. These Friction Plates uniformly transfer torque to a Mono-Drive chrome-moly hub which is heat treated for strength and durability extending input shaft life with one continuous spline. The lightweight, rigid design allows for quicker shifts and trouble-free service. This kit includes a CNC-machined and dynamically balanced flywheel, pressure plate cover, diaphragm spring, face, puck-style ceramic friction plates, rigid Mono-Drive hub, 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.

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
Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 51845118080

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CM
Port Orchard, US
★★★★★ 1
Does not fit 19 accord
Size: (Pack of 1), Size: (Pack of 1)
Does NOT fit the 2019 accord. Literally just tried it and it’s too big.
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Reviewed in the United States on May 15, 2026
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C.T.
Pawtucket, US
★★★★★ 5
Good price air filter
Decent Air filter good price
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Reviewed in the United States on May 9, 2026
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Michelle my Belle
Houston, US
★★★★★ 5
Good quality and easy installation.
Fit perfectly. Seemed good quality. Easy installation.
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Reviewed in the United States on April 13, 2026
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steve l
Boise, US
★★★★★ 5
Good quality replacement
Perfect fit and filter looks as good as the OEM
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Reviewed in the United States on December 16, 2025
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HD
Lake Worth, US
★★★★★ 5
Great value
Installation is quick and easy, as it fits perfectly in the existing air filter housing without any modifications needed. The rigid panel design ensures a tight seal, preventing any unfiltered air from entering the engine. In terms of performance, this air filter does a commendable job of filtering out dirt, debris, and other particles, aiding in better engine performance and fuel efficiency. It improves the overall air intake, allowing the engine to breathe easier and perform optimally.
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Reviewed in the United States on June 22, 2023

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