ACT 884006P Monoloc Clutch Collar for 2002-2021 WRX/STI/Evo/Legacy/Forester

Vehicle Fitment

• 2002-2021 Subaru WRX (Turbo H4 2.0 L-2.5 L GAS FI, Manual)
• 2004-2021 Subaru WRX STI (Turbo H4 2.5 L GAS FI, Manual)
• 2004-2008 Subaru Forester XT (Turbo H4 2.5 L GAS FI, Manual)
• 2008-2014 Subaru Legacy GT / Legacy spec.B (Turbo H4 2.5 L GAS FI, Manual)
• 2003-2015 Mitsubishi Lancer Evolution (Various trims, Turbo I4, Manual)
• Early Mazda RX-7 (selected 1.3 L rotary manual applications)

Features

• Monoloc one-piece clutch collar - direct OEM replacement or upgrade
• Hardened chromoly steel construction for long service life
• Improved spring tension design for consistent release bearing alignment
• Eliminates two-piece wedge collar and wire ring failures under load
• Optimizes loading on the bearing and pressure plate regardless of driver input
• Reduces risk of collar bending or popping out during enthusiastic driving
• Recommended for all uses, including performance and street driving
• Direct fit for select pull-type clutch assemblies

Specifications

• Part Type: Monoloc clutch collar / release mechanism component
• Material: Hardened chromoly steel
• Direct Fit: Yes - replaces two-piece wedge collar and wire ring
• Product Weight: ~0.1 lbs
• Compatible With: Pull-type clutch assemblies (crimp-type center hub)
• Warranty: 12-month limited warranty

Included Components

• 1x ACT Monoloc clutch collar (884006P)

Product Description

The ACT 884006P Monoloc Clutch Collar is a high-quality replacement and upgrade component designed to improve the reliability and performance of pull-type clutch systems in select turbocharged Subaru, Mitsubishi EVO, and compatible vehicles. This one-piece monoloc collar replaces the conventional two-piece wedge collar and wire ring assembly that can bend or pop out under hard shifts or heavy use, potentially leading to clutch disengagement issues or pressure plate damage. The hardened chromoly steel construction and carefully calibrated spring tension ensure uniform loading on the release bearing and pressure plate under all driving conditions.

The monoloc collar is a direct fit for many high-performance applications including Subaru WRX and WRX STI models from 2002-2021, several Mitsubishi Lancer Evolution generations (2003-2015), Subaru Forester XT and Legacy GT variants, and select Mazda RX-7 models. It is recommended as both a replacement for worn OEM components and as an upgrade to enhance clutch release reliability during spirited driving or racing. Because it integrates seamlessly into pull-type clutch assemblies and improves alignment and load consistency, the ACT 884006P is a trusted choice for enthusiasts and performance builders alike.