Street Master Reinforced Clutch, Porsche

Reinforced clutch built around the 964 RS single-mass layout, deliberately keeping a wide engagement band so it stays usable in traffic.

Drivetrain In production confidence: medium

Manufacturing

Manufacturer	OS Giken (OS技研)
Origin	🇯🇵 Japan Manufactured here OS Giken, Japan.
Process	CNC Machined
Additively manufactured	No
Material	Chromoly Steel
Notes	Based on the 964 RS single-mass type; other variants need additional parts. Owner reports describe pedal effort close to standard and stable idle — the usual cost of a reinforced clutch is exactly those two things, so keeping them is the design claim.

964	Carrera 2, Carrera RS
993	All models