XClutch Stage 1 Sprung Organic Clutch Kit - 2015-2021 Subaru WRX STi 2.5L

Upgrade your WRX STi with the XClutch Stage 1 sprung organic clutch kit - the perfect balance between performance and drivability. Engineered specifically for the 2015-2021 Subaru WRX STi, this clutch delivers substantial increases in torque capacity and performance while maintaining smooth, street-friendly engagement for daily driving and spirited weekend use.

Key Features:

• Stage 1 performance upgrade - ideal for street and light track use
• Sprung hub design with dampening for smooth engagement
• Organic friction material for OEM-like drivability
• Increased clamping force for higher torque capacity
• Advanced pressure plate design for positive pedal feel
• Includes pressure plate, clutch disc, and release bearing
• Direct replacement for factory clutch
• XClutch quality engineering with 30+ years of experience

Performance Benefits:

• Increased Torque Capacity: Handles more power than stock clutch for modified engines
• Smooth Engagement: Sprung hub and organic material provide street-friendly drivability
• Improved Pedal Feel: Advanced pressure plate design delivers positive, consistent pedal feel
• Daily Driver Friendly: Maintains comfort for commuting and daily use
• Track Capable: Handles spirited driving and occasional track days
• Long Service Life: Premium materials ensure extended clutch life

Specifications:

• Brand: XClutch
• Part Number: XKSU24001-1A
• Stage: Stage 1 (street/track)
• Disc Type: Sprung organic
• Hub Design: Sprung with dampening
• Friction Material: Organic
• Torque Capacity: Increased over stock (supports mild to moderate modifications)
• Weight: 20 lbs (complete kit)
• Barcode: XKSU24001-1A

Fitment Information:

• Compatible Vehicles:
• 2015-2021 Subaru WRX STi (EJ257)
• 2018-2021 Subaru WRX STi Type RA (EJ257)
• Note: Designed specifically for 2015+ WRX STi with 2.5L EJ257 engine

What's Included:

• XClutch Stage 1 pressure plate
• Sprung organic clutch disc
• Release bearing (throw-out bearing)
• Alignment tool
• Installation instructions

Installation Notes:

• Professional installation strongly recommended
• Transmission removal required for installation
• Installation time: approximately 6-8 hours
• Flywheel should be resurfaced or replaced during installation
• Use new flywheel bolts (not included - use OEM or ARP)
• Torque all fasteners to Subaru specifications
• Break-in period: 500-1,000 miles of moderate driving required

Stage 1 Performance Level:

XClutch Stage 1 clutches are designed for street-driven vehicles with mild to moderate performance modifications. This stage offers increased torque capacity over stock while maintaining smooth, progressive engagement similar to the factory clutch. It's the ideal upgrade for WRX STi owners running bolt-on modifications like intake, exhaust, and ECU tuning who want improved clutch performance without sacrificing daily drivability.

Sprung Hub Design:

The sprung hub design incorporates dampening springs that absorb drivetrain shock and vibration, resulting in smooth engagement and reduced transmission wear. This makes the clutch feel similar to the factory unit during normal driving while providing the increased torque capacity needed for modified engines. The sprung design is ideal for street use where comfort and drivability are priorities.

Organic Friction Material:

XClutch uses premium organic friction material that provides smooth, progressive engagement similar to the factory clutch. Organic material offers excellent modulation and pedal feel, making it easy to drive in traffic and during daily commuting. While ceramic clutches offer higher torque capacity, organic material is the preferred choice for street-driven vehicles where drivability is important.

Why XClutch?

XClutch is an Australian engineering company with over 30 years of clutch development experience. Their Stage 1 clutches are designed using advanced pressure plate geometry and premium friction materials to deliver the ideal balance between performance and drivability. With one of the world's most advanced clutch testing facilities and extensive in-house vehicle testing, XClutch delivers proven performance and reliability.

Break-In Procedure:

Proper break-in is critical for clutch longevity and performance. For the first 500-1,000 miles, avoid aggressive launches, heavy loads, and sustained high-RPM clutch slip. Use moderate throttle inputs and allow the friction material to properly mate with the flywheel surface. After break-in, the clutch will provide maximum performance and service life.

When to Choose Stage 1:

Stage 1 clutches are ideal for WRX STi owners with mild to moderate modifications including intake, exhaust, downpipe, and ECU tuning. If you're running stock or near-stock power levels with bolt-on modifications and want improved clutch performance without sacrificing daily drivability, Stage 1 is the perfect choice. For heavily modified engines or big turbo builds, consider XClutch's Stage 2 or twin-disc options.

Perfect For: Daily-driven WRX STi with bolt-on modifications, weekend warriors, occasional track day participants, or anyone seeking improved clutch performance with OEM-like drivability.

Pro Tip: When installing a new clutch, it's the perfect time to resurface or replace your flywheel. Consider pairing this clutch with an XClutch chromoly flywheel for improved throttle response.

Recommended For: Stock to Stage 2 tuned WRX STi with bolt-on modifications (intake, exhaust, downpipe, tune).

Upgrade your Subaru WRX STi with XClutch's Stage 1 clutch kit - engineered for performance, designed for daily driving.