• Stage 3 clutch kit
• Aggressive multi-friction-surface disc design
• Significantly increased torque holding capacity
• Built for serious performance and modified STI applications

A Genuine Step Into Serious Performance Territory

SPEC's Stage 3 clutch kit represents a genuine step up into serious performance territory, built specifically for STI owners who've moved beyond what a Stage 1 or Stage 2 clutch can reliably handle. SPEC has built a reputation in the clutch industry around genuinely aggressive, high-torque-capacity designs rather than mild upgrades marketed with aggressive-sounding names. That reputation matters when you're choosing a clutch for a car that's already seeing real modifications and real power. That's the kind of detail that separates genuine engineering from a basic replacement part.

Built for a Modified STI, Not a Stock One

A Stage 3 clutch like this one is intended for a genuinely modified STI running meaningful power increases, not a stock or mildly modified car where the added aggressiveness and pedal effort wouldn't be worth the tradeoff. That's an important distinction to understand before choosing this kit over a milder option, since a Stage 3 clutch will feel noticeably different from the factory clutch in daily driving. For a build that's already pushing real power, though, this is exactly the kind of clutch capacity that keeps up. It's a small distinction that makes a real difference once you're actually driving on it.

Straight From Subispeed

A serious clutch upgrade for a genuinely modified 2004-2007 STI — built for real power, not a mild street upgrade.

This Part Fits: