Action Clutch 7.25 in Twin Disc Clutch for 06-11 Civic Si

Action Clutch 7.25" Twin Disc Race Clutch Kit (K20Z3) w/ Steel Flywheel - 2006-2011 Civic Si

This is a dedicated race clutch, not a street upgrade. Action Clutch's 7.25" twin disc kit holds 800 ft-lb of torque through two sintered metallic race discs, in a lightweight billet aluminum cover, with the matched steel flywheel included. It's engineered for racers pushing an 8th gen Si to the limit, launches hard, engages smoothly for a race clutch, and takes serious power, but it's built for the track.

Race Use Only

Being clear up front, because this is not a street clutch.

This kit is specifically engineered for race applications only. A sintered metallic twin disc clutch is built for maximum holding power and fast, aggressive engagement, which is exactly what you want on a race car and exactly what makes it unpleasant on the street, sharper, less forgiving engagement that's tiring in traffic and not designed for daily driving.

If you want a clutch you can daily, this isn't it, you'd want a street or street/strip organic clutch. If you're building a dedicated race or track Si and need a clutch that holds serious power and launches hard, read on.

800 ft-lb Through Two Sintered Discs

The holding capacity is the headline, and it comes from the twin disc design.

The kit uses two sintered metallic race discs, formulated in the USA, which together hold 800 ft-lb of torque. Splitting the clamping across two discs is how you get that holding power without needing brutal pedal pressure, twin disc spreads the load, so it clamps harder than a single disc could while keeping the pedal manageable.

Sintered metallic friction material is what gives it the heat capacity, it takes and sheds the heat of hard launches and repeated abuse far better than organic material, which fades. The discs are formulated for unrivaled heat capacity and smoother engagement than typical race discs, so it's aggressive without being completely on-off.

Lightweight Billet Cover

The cover design does more than clamp.

It's a ventilated 6061-T6 billet aluminum cover, machined to trim weight and vented to help manage heat. Less rotating mass at the clutch means quicker throttle response and less rotational inertia for the engine to spin up, which you feel as a car that revs more freely and responds faster, genuinely useful on a K20Z3 that lives in its upper rev range.

High-strength steel pressure and floater plates handle the clamping load, adding clamp force without doubling your pedal effort. It's the combination that lets a race clutch hold 800 ft-lb while staying drivable enough to actually launch and modulate.

Matched Steel Flywheel Included

A key part of what makes this a complete package.

The kit includes the steel flywheel the twin disc clutch is designed around. On a 7.25" twin disc setup, the flywheel isn't a separate consideration, the clutch assembly is engineered as a unit with it, so the discs, cover, and flywheel all work together for correct clamping and engagement.

That means you're getting the complete, matched assembly rather than sourcing a flywheel separately and hoping it's compatible. Everything that needs to work together comes together.

Checked By Hand Before It Ships

Worth knowing on a part where consistency matters.

Every kit is inspected by Action Clutch's engineers, who bring over 60 years of collective experience, and each is signed off as safe before it ships. On a race clutch holding this kind of power, that per-unit quality check is the difference between consistent, reliable performance and a gamble.

Fitment

2006-2011 Honda Civic Si (K20Z3)

Includes matched steel flywheel. Race use only. Confirm pedal stop requirement for your application.

Who Should Grab This

This is for the 8th gen Si owner building a dedicated race or track car who needs a clutch that holds 800 ft-lb and launches hard, and who understands it's a race-only part. Twin sintered discs for holding power and heat capacity, a lightweight billet cover for the throttle response that suits the K20, and the matched steel flywheel in the kit. Keep it on the track, sort your pedal stop, and put your power down.

Fits: 2006-2011 Honda Civic Si (K20Z3). Type: 7.25" twin disc race clutch kit with steel flywheel. Holding capacity: 800 ft-lb. Discs: two sintered metallic, USA-formulated. Cover: ventilated 6061-T6 billet aluminum. Plates: high-strength steel pressure and floater. Flywheel: matched steel, included. Use: race only. Note: confirm pedal stop requirement.