What does 'unsprung race use only' mean for this clutch?

An unsprung clutch disc lacks the dampening springs found in standard clutches. This results in a more direct and immediate engagement, which is beneficial for racing. However, it can feel harsh and abrupt for daily driving, hence the 'race use only' designation.

What kind of power levels can this clutch handle?

The Stage 5 rating signifies that this clutch is built to handle substantially increased horsepower and torque, typically found in heavily modified vehicles used for competitive racing like drag, road, or rally.

Will this clutch kit include a new pilot bearing and alignment tool?

This kit includes the clutch disc and pressure plate. While a pilot bearing and alignment tool are often necessary for installation, they are typically sold separately. Always check the product details or contact us to confirm what is included.

Specifications

Brand: SPEC
Part #: SU305

Spec 04-09 STi Stage 5 Clutch Kit - Unsprung Race Use ONLY

Name: Spec 04-09 STi Stage 5 Clutch Kit - Unsprung Race Use ONLY
Brand: SPEC
SKU: spec-spec-04-09-sti-stage-5-clutch-kit-unsprung-race-use-only-t14-2814
Price: 719.10 USD
Availability: BackOrder

$719.10

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2004-2007 Subaru Impreza. SPEC Stage 5 unsprung clutch kit for race use only.

Key Features

Fits 2004-2007 Subaru Impreza.
Includes a high-strength pressure plate and an unsprung clutch disc.
Designed for race use only, offering maximum engagement and holding power.
Stage 5 rating indicates suitability for significantly modified engines.
Provides a direct and immediate connection between the engine and drivetrain.
Features a firm pedal feel suitable for demanding track conditions.

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About this part

Product Details

What you get with this SPEC Stage 5 clutch kit is a high-performance clutch disc and a heavy-duty pressure plate, specifically built for the 2004-2007 Subaru Impreza. This setup is designed for serious racing applications where maximum engagement and holding power are critical. Because it's an unsprung race clutch, it means the clutch disc doesn't have any dampening springs, which allows for a more direct and immediate connection between the engine and the drivetrain. This is a well-built kit that can handle the extreme demands of track use.

The Stage 5 designation means this clutch is engineered for significant power increases, often found in heavily modified Imprezas used for drag racing, road racing, or rally. The pressure plate offers a very firm clamping force to ensure the clutch disc stays engaged even under brutal acceleration and high RPM shifts. It’s important to note that this is a race-only product. The direct engagement and lack of a sprung hub can make it feel abrupt or harsh in daily driving situations, and it's not intended for street use. You'll likely notice a much firmer pedal feel compared to a stock clutch.

When installing this clutch, be prepared for a more involved process. Because it's designed for racing, you might need to consider other drivetrain upgrades to handle the increased power and engagement. Always refer to the manufacturer's installation instructions for specific details and recommended procedures to ensure proper setup and performance for your race vehicle.