OS Giken MN021-AJ6 STR Series Clutch Kit for 2002-2008 Mini Cooper S R52/R53

Vehicle Fitment

• 2002-2006 Mini Cooper S (R53)
• 2005-2008 Mini Cooper S Convertible (R52)
• Mini John Cooper Works GP
• Mini John Cooper Works MC40

Fitment Notes

• Confirm exact model/submodel before ordering, as fitment can vary across R52/R53 trims

Features

• Dampened single plate design with a soft diaphragm for smooth, factory-like clutch pedal feel
• Suited for spirited street driving and occasional race use
• Race-ready capability that remains easy to drive around town
• Release assembly included for a complete installation
• Rated for up to approximately 300 lb-ft of torque

Specifications

• Clutch type: Dampened single plate, soft diaphragm
• Series: OS Giken STR (STR1CD)
• Torque capacity: Up to ~300 lb-ft
• Includes: Release assembly

Included Components

• 1x OS Giken STR Clutch Assembly (MN021-AJ6)
• 1x Release Assembly

Product Description

The OS Giken MN021-AJ6 is an STR series clutch kit built for the 2002-2006 Mini Cooper S (R53) and 2005-2008 Mini Cooper S Convertible (R52), designed for drivers who want a race-capable clutch that's still comfortable for daily driving. Its dampened single plate design with a soft diaphragm delivers a smooth, near-factory pedal feel while handling the demands of spirited street and occasional track use.

Developed from endurance racing experience in Japan, the STR line prioritizes a lighter clutch pedal to reduce driver fatigue without sacrificing durability, holding up to roughly 300 lb-ft of torque. With the release assembly included, it's a complete, straightforward upgrade for R52/R53 Cooper S owners looking for years of reliable performance before an overhaul is needed.