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184mm Twin Disc Clutch Kit for Subaru GDB
Kit Includes
✔ 184mm / 7.25" Twin-Disc Clutch (ultra-lightweight, only 4.20 kg)
Hardness: HRC 58–62 → over twice as hard as standard flywheels → Prevents wear on starter ring gear in high-compression engines
Longevity: High surface hardness = extended service life & reliability
Clutch Cover
Material: Forged 6061-T6 aluminum, hard anodized
Construction: Steel-riveted legs for near-lifetime durability. Hardened steel thrust buttons/rivets offer a smooth and durable surface for the clutch cover legs, pressure, and floater plates.
The tightening torque for the cover-to-flywheel bolts (M8x1.25, grade 12.9) is 40 Nm.
Top/Pressure & Floating Plates
Material: Forged chromoly steel, cryogenically treated (in some applications)
Clutch Disc
Material: Sintered friction with multiple design options
Standard version: Three large pads
Customization: Available on request (e.g. custom spline)
Key Features & Benefits
✔ Single-disc supports 400+ hp / 450+ Nm (Twin-disc version rated over 1,000 hp / 1,200 Nm depending on specs)
