Why This XTD Stage 1 + Lightweight Flywheel Setup?

Common EJ257 issues:

• Clutch slip under boost
• Weak engagement on tuned setups
• Heavy flywheel slows rev response
• Heat fade during aggressive driving

This Combo Fixes That:

• Stage 1 organic clutch disc for increased grip
• Upgraded pressure plate with higher clamp load
• X-Lite lightweight flywheel reduces rotational mass
• Improved heat resistance and durability

Translation: it holds boost—and revs faster doing it.

XTD has 25 years of history supplying very best clutch products to top tier clutch brands in Japan, UK, Australia and U.S. XTD has taken this experience and a new approach to re-engineer performance clutch industry and is now probably the most fastest growing performance clutch company on this planet.

What’s Included

• Stage 1 organic clutch disc
• Heavy-duty pressure plate
• Release bearing
• Pilot bearing (if applicable)
• X-Lite lightweight flywheel

Complete system—no guesswork.

XTD contributes this growth to its commitment in the innovation and highest quality of the products that we design and manufacture, complimented by an industry leading warranty and unparalleled customer service.

Key Features

• Stage 1 performance clutch design
• Organic disc for street-friendly engagement
• Lightweight flywheel for faster engine response
• Higher torque capacity vs OEM
• Precision-balanced components

XTD uses only quality clutch components that are engineered to function as a matched set and work the way they must with the rest of the driveline components.They have been designed to be an instantaneous replacement for the original equipment components used when the vehicle is new.

Performance Benefits

• Eliminates clutch slip under boost
• Faster engine revving and response
• Stronger engagement and power transfer
• Improved driving feel and acceleration

No slipping in boost. No lazy revs. Just clean, aggressive pulls.

⚠️ What to Expect

• Slight gear chatter at idle (normal with lightweight flywheel)
• Slightly firmer pedal feel
• Faster RPM drop between shifts

Translation: still daily-friendly—just more serious.

The entire components we use are manufactured and tested to the Original Equipment specifications of the major automobile manufacturers Professional installation really useful. 6 MONTHS or 12,000 miles manufacturer defect warranty

Installation Notes

• Follow 500–750 mile break-in period
• Torque flywheel bolts to spec (ARP recommended)
• Inspect:
  • Clutch hydraulics
  • Rear main seal
• Ideal install during:
  • Clutch replacement
  • Performance upgrades

Why XTD stage 1 clutch flywheel kit?

Because:

• Offers affordable performance upgrades
• Balances torque capacity with street usability
• Pairs well with bolt-on turbo builds

Our products are designed according to OEM specifications
All Kits are assembled in the U.S. the usage of only prime quality components
Highly Trained Customer Strengthen avaialble to answer your entire technical questions
Limited Warranty: XTD products comes with excellent customer Strengthen and limited manufacturer warranty of 6 months or 12,000 miles that covers issues related to performance, fitment and function.
Compatible With: 2004 – 2019 Subaru WRX STi (2.5L 6spd, EJ25 turbo) 2007 – 2009 Subaru Legacy GT Spec B (2.5L 6spd EJ25 turbo)

Final Verdict

The XTD Stage 1 Clutch Kit + X-Lite Flywheel is a strong upgrade for WRX STI and Legacy GT Spec.B owners—more grip, faster response, and built to handle boost without ruining your daily drive.

Finally lets your Subaru use its power properly.