SPEC SF331-4 Stage 1 Clutch Kit for 2013-2018 Ford Focus ST 2.0L EcoBoost

Vehicle Fitment

2012-2018 Ford Focus ST 2.0L EcoBoost (with SPEC billet flywheel only)

Fitment Notes

• Requires SPEC SF33A-4 billet flywheel (sold separately) - NOT compatible with stock flywheel
• Non-SAC (non-Self-Adjusting Clutch) design - differs from stock clutch mechanism
• For modified Focus ST applications with bolt-on performance upgrades
• Throwout bearing not included - reuse stock or purchase separately
• Pilot bushing not included
• Professional installation recommended

Features

• SPEC Stage 1 performance clutch kit for street and track use
• Carbon-Kevlar based organic friction material with integrally bonded steel backing
• Non-SAC pressure plate provides lighter rotating assembly than stock
• Higher RPM capability and greater clamp load than OE self-adjusting clutch
• Double-sprung hub with spring cover reliefs for smooth engagement
• Heat-treated hub components for strength and durability
• High-clamp diaphragm pressure plate
• Full-face disc design for maximum contact area
• Smooth engagement with excellent service life
• Suitable for street, drag, road race, rally, drift, and autocross
• SFI approved
• Made in USA

Specifications

• Brand: SPEC Clutch
• Part Number: SF331-4
• UPC: 841802119183
• Product Type: Stage 1 Clutch Kit
• Torque Capacity: 430 ft-lbs
• Disc Diameter: 9.500 inches (241mm)
• Input Spline Count: 23
• Input Shaft Diameter: 1.031 inches
• Disc Material: Organic (Carbon-Kevlar based)
• Disc Style: Full Face
• Hub Style: Sprung (Double-Sprung)
• Pressure Plate Style: Diaphragm
• Clutch Mechanism: Non-SAC (Non-Self-Adjusting)
• Flywheel Included: No
• Throwout Bearing Included: No
• Pilot Bushing Included: No
• Alignment Tool Included: Yes
• Required Flywheel: SPEC SF33A-4
• Country of Origin: USA

Included Components

• (1) SPEC Stage 1 pressure plate
• (1) SPEC Stage 1 clutch disc (carbon-Kevlar organic, sprung hub)
• (1) Clutch alignment tool

Product Description

The SPEC SF331-4 Stage 1 clutch kit is engineered for 2012-2018 Ford Focus ST owners seeking increased torque capacity and improved performance over the factory clutch. Rated at 430 ft-lbs, this kit handles bolt-on modifications while maintaining smooth street drivability. The non-SAC pressure plate design deviates from the stock self-adjusting mechanism to deliver a lighter rotating assembly, higher RPM capability, and greater clamping force. The carbon-Kevlar based organic disc features an integrally bonded steel backing for durability under high clamp loads and temperatures, while the double-sprung hub ensures smooth engagement. This kit requires the SPEC SF33A-4 billet flywheel for installation and is not compatible with the stock dual-mass flywheel.