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Performance Touring Clutch & Flywheel Upgrade kit from OS Giken. A performance street & occasional track set-up good for 250 whp!
For the 2nd generation MINI Cooper S models including R56 Hardtop R55 Clubman R57 Convertible R58 Coupe R59 Roadster
OS Giken Grand Touring Soft Clutch Kit MINI Cooper S R55 R56 R57 R58 R59 Gen2

OS Giken Grand Touring Soft Clutch Kit MINI Cooper S R55 R56 R57 R58 R59 Gen2

OS Giken Grand Touring Soft Clutch Kit MINI Cooper S R55 R56 R57 R58 R59 Gen2

OS Giken Grand Touring Soft Clutch Kit MINI Cooper S R55 R56 R57 R58 R59 Gen2

OS Giken Grand Touring Soft Clutch Kit MINI Cooper S R55 R56 R57 R58 R59 Gen2

OS Giken Grand Touring Soft Clutch Kit MINI Cooper S R55 R56 R57 R58 R59 Gen2

OS Giken Grand Touring Soft Clutch Kit MINI Cooper S R55 R56 R57 R58 R59 Gen2
Selected: G2NMG1643
OS Giken Grand Touring Soft Clutch Kit MINI Cooper S R55 R56 R57 R58 R59 Gen2
Grand Touring 'Soft' Street Kit
Qty:
Specially Priced Item
$1690.99
Part No: G2NMG1643
Internet Price $1690.99
A High Quality Grand Touring 'soft' Clutch and Flywheel Upgrade kit from OS Giken for any MINI. A performance street set-up with 'stock-like' pedal pressure perfect for daily driving.  This kit has a softer diaphragm spring which results in a softer pedal feel than the G2NMG1645 Grand Touring Kit, and slightly less torque capacity.  It you want quality, durability and stock-like feel, this is the kit for you.

Fits 6-speed manual transmission on the following Cooper S models:

2007-2013 R56 MINI Cooper S Hardtop
2008-2014 R55 MINI Cooper S Clubman
2009-2015 R57 MINI Cooper S Convertible
2012-2015 R58 MINI Cooper S Coupe
2012-2015 R59 MINI Cooper S Roadster

Also fits JCW models.

Each Kit includes

  • Clutch Disc
  • Pressure Plate
  • Flywheel
  • A metal Throwout Bearing.

The Grand Touring Clutch is the latest development to our clutch lineup and retains all the technology from our Racing Multi-plate Clutches, but with the addition of our unique “floating pressure system” to provide a smooth and chatter-free driving experience.

Giken products costs slightly more than the factory dual mass flywheel and clutch replacements, but offers higher quality and durability. The integrated flywheel, clutch, and pressure plate design provides a 'matched' and 'balanced' solution.

This kit has a torque capacity of 325 wtq. 

For more 'performance' oriented Clutch/Flywheel upgrade, see G2NMG1640 Performance Upgrade Kit.

Kit includes Clutch Disc, Pressure Plate, Flywheel, Flywheel Bolts and a metal Throwout Bearing. Enclosed Flywheel Bolts MUST be used with this kit.

For the matching OS Giken Super Lock Limited Slip Differential, take a look at G2NMG1100.

NOTE: The stock 'twin-mass' flywheel uses sprung plates to absorb gearbox vibrations. The Giken unit is a single mass unit which may increase gearbox noise.

The Grand Touring clutch kits are designed for daily driven high performance vehicles. GT clutches provide the comfort of the stock clutch’s pedal feel with improved durability.

OS Giken Clutches: Through our research and development of high performance engines, we realized the need for the production of higher quality, more durable clutch systems to meet the rigorous demands of race and sport driving. Our OS clutch is able to transmit engine revolutions and output to the drive train without loss. They are made of the highest quality materials and their durability is second to none. Our continual research and development has brought about many improvements and we are confident that our clutches can meet the demands of even the most heavily modified vehicles.

Discs
The STR1CD kit utilizes full face metallic clutch plates to achieve high torque capacity from our clutches. This allows use of much softer diaphragm springs to achieve equal or better torque capacity compared to our competitors with substantially less pedal effort.

Clutch Cover 
The specially designed clutch cover contains a unique leverage mechanism for the diaphragm spring, resulting in a higher clamping load of the clutch disc(s) while also reducing pedal effort. These diaphragm springs combined with the special OS Giken Release Sleeves provide a much easier to operate clutch.

Clutch Housing
Integrated ventilation holes reduce heat generated inside the clutch system and allows for friction plate dust to exit outside the clutch system, thus increasing reliability and safety. Both the clutch housing and flywheel are chemically heat treated to handle extreme conditions. Increased power output typically requires more torque capacity(friction) in order to hold. This often leads to more heat being generated

Flywheel
The hardened steel alloy flywheels provide superior durability and life than aluminum flywheels, which also results in quicker and predictable engine response. We develop our own flywheel design to maximize our design and engineering philosophies into a no-compromise, complete clutch assembly.

What is the difference between an OS Giken clutch and another companies clutch?
Through years of development and since its first introduction to the public in 1983, OS Giken clutches have always focused on extraordinary durability, drivability, and effective power transmission. In order to properly develop a clutch system to maximize drivetrain performance, OS Giken determined that it would be most effective to engineer and manufacture clutch kits as a clutch/flywheel package. By doing so, a clutch kit can be installed which has already been properly matched to your MINI. Additionally, the design, engineering and manufacturing of OS Giken clutch kits promote improved durability (through friction plate material which is carefully selected and alloyed so that the plates match with the materials of the flywheel and center plate), maintained drivability (through revised leverage mechanisms to provide higher disk pressure while reducing pedal effort), increased longevity (through a superior design and usage of extra manufacturing processes for strengthening).

Read OS Giken's FAQ's.

In 1975, OS Giken made it's memorable entry into the racing world with the its unparalleled Four Valve DOHC TC16-MAII/TC24-B1 engine and firmly established itself as one Japan's most innovative race engineering companies.

Because all of OS Giken's designs and concepts are based on sound engineering and quality manufacturing, their reputation for reliable performance and durability is unparalleled.

Consequently, OS Giken’s drive train products are commonly the first choice for professional race teams in Japan, because in order to finish first you must first finish the race.

When the time comes, an 'overhaul' kit is available.

Note: Depending on inventory, this product may need to be supplied from the manufacturer overseas. Delivery 'may' take 4 weeks.

Installation Torque Specifications:

Cover bolts: 13 lb-ft

Housing bolts (attached to back side of flywheel): 13 lb-ft

Diaphragm spring bolts: DO NOT TIGHTEN OR LOOSEN

Flywheel bolts: 66 lb-ft in a criss-cross pattern

Manufacturer's Guarantee

  • All OS Giken goods are guaranteed to be in working order and free of manufacturing defects
  • All OS Giken products are intended for off-road use, no warranty is provided
  • No Returns on purchases over 90 days old
  • No Returns on items that have been installed on a vehicle or items that cannot be resold as new and unused
  • All Returns are subject to a 25% Restocking Fee (Valid Warranty Claims Excluded)
  • All returns are subject to approval by OS Giken USA Inc prior to acceptance

 

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This Item (G2NMG1643) Fits the following cars:
  • 2014
  • MINI Cooper
  • F56 Hatchback 2-Door
  • Manual
  • 2014
  • MINI Cooper
  • R55 Clubman
  • Automatic
  • 2014
  • MINI Cooper
  • R55 Clubman
  • Manual
  • 2014
  • MINI Cooper
  • R57 Convertible
  • Automatic
  • 2014
  • MINI Cooper
  • R57 Convertible
  • Manual
  • 2014
  • MINI Cooper
  • R58 Coupe
  • Automatic
  • 2014
  • MINI Cooper
  • R58 Coupe
  • Manual
  • 2014
  • MINI Cooper
  • R59 Roadster
  • Automatic
  • 2014
  • MINI Cooper
  • R59 Roadster
  • Manual
  • 2014
  • MINI Cooper
  • R60 Countryman
  • Manual
  • 2014
  • MINI Cooper
  • R61 Paceman
  • Manual
  • 2014
  • MINI Cooper S
  • F56 Hatchback 2-Door
  • Automatic
  • 2014
  • MINI Cooper S
  • F56 Hatchback 2-Door
  • Manual
  • 2014
  • MINI Cooper S
  • R55 Clubman
  • Automatic
  • 2014
  • MINI Cooper S
  • R55 Clubman
  • Manual
  • 2014
  • MINI Cooper S
  • R57 Convertible
  • Automatic
  • 2014
  • MINI Cooper S
  • R57 Convertible
  • Manual
  • 2014
  • MINI Cooper S
  • R58 Coupe
  • Automatic
  • 2014
  • MINI Cooper S
  • R58 Coupe
  • Manual
  • 2014
  • MINI Cooper S
  • R59 Roadster
  • Automatic
  • 2014
  • MINI Cooper S
  • R59 Roadster
  • Manual
  • 2014
  • MINI Cooper S
  • R60 Countryman
  • Automatic
  • 2014
  • MINI Cooper S
  • R60 Countryman
  • Manual
  • 2014
  • MINI Cooper S
  • R61 Paceman
  • Automatic
  • 2014
  • MINI Cooper S
  • R61 Paceman
  • Manual
  • 2013
  • MINI Cooper
  • R55 Clubman
  • Automatic
  • 2013
  • MINI Cooper
  • R55 Clubman
  • Manual
  • 2013
  • MINI Cooper
  • R56 Hatchback/Hardtop
  • Automatic
  • 2013
  • MINI Cooper
  • R56 Hatchback/Hardtop
  • Manual
  • 2013
  • MINI Cooper
  • R57 Convertible
  • Automatic
  • 2013
  • MINI Cooper
  • R57 Convertible
  • Manual
  • 2013
  • MINI Cooper
  • R58 Coupe
  • Automatic
  • 2013
  • MINI Cooper
  • R58 Coupe
  • Manual
  • 2013
  • MINI Cooper
  • R59 Roadster
  • Automatic
  • 2013
  • MINI Cooper
  • R59 Roadster
  • Manual
  • 2013
  • MINI Cooper
  • R60 Countryman
  • Manual
  • 2013
  • MINI Cooper
  • R61 Paceman
  • Manual
  • 2013
  • MINI Cooper S
  • R55 Clubman
  • Automatic
  • 2013
  • MINI Cooper S
  • R55 Clubman
  • Manual
  • 2013
  • MINI Cooper S
  • R56 Hatchback/Hardtop
  • Automatic
  • 2013
  • MINI Cooper S
  • R56 Hatchback/Hardtop
  • Manual
  • 2013
  • MINI Cooper S
  • R57 Convertible
  • Automatic
  • 2013
  • MINI Cooper S
  • R57 Convertible
  • Manual
  • 2013
  • MINI Cooper S
  • R58 Coupe
  • Automatic
  • 2013
  • MINI Cooper S
  • R58 Coupe
  • Manual
  • 2013
  • MINI Cooper S
  • R59 Roadster
  • Automatic
  • 2013
  • MINI Cooper S
  • R59 Roadster
  • Manual
  • 2013
  • MINI Cooper S
  • R60 Countryman
  • Automatic
  • 2013
  • MINI Cooper S
  • R60 Countryman
  • Manual
  • 2013
  • MINI Cooper S
  • R61 Paceman
  • Automatic
  • 2013
  • MINI Cooper S
  • R61 Paceman
  • Manual
  • 2012
  • MINI Cooper
  • R55 Clubman
  • Automatic
  • 2012
  • MINI Cooper
  • R55 Clubman
  • Manual
  • 2012
  • MINI Cooper
  • R56 Hatchback/Hardtop
  • Automatic
  • 2012
  • MINI Cooper
  • R56 Hatchback/Hardtop
  • Manual
  • 2012
  • MINI Cooper
  • R57 Convertible
  • Automatic
  • 2012
  • MINI Cooper
  • R57 Convertible
  • Manual
  • 2012
  • MINI Cooper
  • R58 Coupe
  • Automatic
  • 2012
  • MINI Cooper
  • R58 Coupe
  • Manual
  • 2012
  • MINI Cooper
  • R59 Roadster
  • Automatic
  • 2012
  • MINI Cooper
  • R59 Roadster
  • Manual
  • 2012
  • MINI Cooper
  • R60 Countryman
  • Manual
  • 2012
  • MINI Cooper S
  • R55 Clubman
  • Automatic
  • 2012
  • MINI Cooper S
  • R55 Clubman
  • Manual
  • 2012
  • MINI Cooper S
  • R56 Hatchback/Hardtop
  • Automatic
  • 2012
  • MINI Cooper S
  • R56 Hatchback/Hardtop
  • Manual
  • 2012
  • MINI Cooper S
  • R57 Convertible
  • Automatic
  • 2012
  • MINI Cooper S
  • R57 Convertible
  • Manual
  • 2012
  • MINI Cooper S
  • R58 Coupe
  • Automatic
  • 2012
  • MINI Cooper S
  • R58 Coupe
  • Manual
  • 2012
  • MINI Cooper S
  • R59 Roadster
  • Automatic
  • 2012
  • MINI Cooper S
  • R59 Roadster
  • Manual
  • 2012
  • MINI Cooper S
  • R60 Countryman
  • Automatic
  • 2012
  • MINI Cooper S
  • R60 Countryman
  • Manual
  • 2011
  • MINI Cooper
  • R55 Clubman
  • Automatic
  • 2011
  • MINI Cooper
  • R55 Clubman
  • Manual
  • 2011
  • MINI Cooper
  • R56 Hatchback/Hardtop
  • Automatic
  • 2011
  • MINI Cooper
  • R56 Hatchback/Hardtop
  • Manual
  • 2011
  • MINI Cooper
  • R57 Convertible
  • Automatic
  • 2011
  • MINI Cooper
  • R57 Convertible
  • Manual
  • 2011
  • MINI Cooper
  • R60 Countryman
  • Manual
  • 2011
  • MINI Cooper S
  • R55 Clubman
  • Automatic
  • 2011
  • MINI Cooper S
  • R55 Clubman
  • Manual
  • 2011
  • MINI Cooper S
  • R56 Hatchback/Hardtop
  • Automatic
  • 2011
  • MINI Cooper S
  • R56 Hatchback/Hardtop
  • Manual
  • 2011
  • MINI Cooper S
  • R57 Convertible
  • Automatic
  • 2011
  • MINI Cooper S
  • R57 Convertible
  • Manual
  • 2011
  • MINI Cooper S
  • R60 Countryman
  • Automatic
  • 2011
  • MINI Cooper S
  • R60 Countryman
  • Manual
  • 2010
  • MINI Cooper
  • R55 Clubman
  • Automatic
  • 2010
  • MINI Cooper
  • R55 Clubman
  • Manual
  • 2010
  • MINI Cooper
  • R56 Hatchback/Hardtop
  • Automatic
  • 2010
  • MINI Cooper
  • R56 Hatchback/Hardtop
  • Manual
  • 2010
  • MINI Cooper
  • R57 Convertible
  • Automatic
  • 2010
  • MINI Cooper
  • R57 Convertible
  • Manual
  • 2010
  • MINI Cooper S
  • R55 Clubman
  • Automatic
  • 2010
  • MINI Cooper S
  • R55 Clubman
  • Manual
  • 2010
  • MINI Cooper S
  • R56 Hatchback/Hardtop
  • Automatic
  • 2010
  • MINI Cooper S
  • R56 Hatchback/Hardtop
  • Manual
  • 2010
  • MINI Cooper S
  • R57 Convertible
  • Automatic
  • 2010
  • MINI Cooper S
  • R57 Convertible
  • Manual
  • 2009
  • MINI Cooper
  • R55 Clubman
  • Automatic
  • 2009
  • MINI Cooper
  • R55 Clubman
  • Manual
  • 2009
  • MINI Cooper
  • R56 Hatchback/Hardtop
  • Automatic
  • 2009
  • MINI Cooper
  • R56 Hatchback/Hardtop
  • Manual
  • 2009
  • MINI Cooper
  • R57 Convertible
  • Automatic
  • 2009
  • MINI Cooper
  • R57 Convertible
  • Manual
  • 2009
  • MINI Cooper S
  • R55 Clubman
  • Automatic
  • 2009
  • MINI Cooper S
  • R55 Clubman
  • Manual
  • 2009
  • MINI Cooper S
  • R56 Hatchback/Hardtop
  • Automatic
  • 2009
  • MINI Cooper S
  • R56 Hatchback/Hardtop
  • Manual
  • 2009
  • MINI Cooper S
  • R57 Convertible
  • Automatic
  • 2009
  • MINI Cooper S
  • R57 Convertible
  • Manual
  • 2008
  • MINI Cooper
  • R52 Convertible
  • Manual
  • 2008
  • MINI Cooper
  • R55 Clubman
  • Automatic
  • 2008
  • MINI Cooper
  • R55 Clubman
  • Manual
  • 2008
  • MINI Cooper
  • R56 Hatchback/Hardtop
  • Automatic
  • 2008
  • MINI Cooper
  • R56 Hatchback/Hardtop
  • Manual
  • 2008
  • MINI Cooper S
  • R52 Convertible
  • Automatic
  • 2008
  • MINI Cooper S
  • R52 Convertible
  • Manual
  • 2008
  • MINI Cooper S
  • R55 Clubman
  • Automatic
  • 2008
  • MINI Cooper S
  • R55 Clubman
  • Manual
  • 2008
  • MINI Cooper S
  • R56 Hatchback/Hardtop
  • Automatic
  • 2008
  • MINI Cooper S
  • R56 Hatchback/Hardtop
  • Manual
  • 2007
  • MINI Cooper
  • R52 Convertible
  • Manual
  • 2007
  • MINI Cooper
  • R56 Hatchback/Hardtop
  • Automatic
  • 2007
  • MINI Cooper
  • R56 Hatchback/Hardtop
  • Manual
  • 2007
  • MINI Cooper S
  • R52 Convertible
  • Automatic
  • 2007
  • MINI Cooper S
  • R52 Convertible
  • Manual
  • 2007
  • MINI Cooper S
  • R56 Hatchback/Hardtop
  • Automatic
  • 2007
  • MINI Cooper S
  • R56 Hatchback/Hardtop
  • Manual
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9 MINI Cooper Performance Parts - an upgrade guide for your MINI
Created: March 16, 2016
This is a comprehensive guide on products can extract more performance out of your Mini Cooper. This article will list what types of upgrades are available for your Mini Cooper S.
R55 / R56 MCS Clutch Bleeding Instructions
Created: March 29, 2011
The clutch operates using brake fluid. It draws off the brake fluid reservoir via a black tube on the side. Fluid flows from the reservoir into the cylinder above the clutch pedal (when there is a negative pressure). Then when the pedal is pushed the pedal cylinder pushes fluid through the tube into the clutch slave cylinder which activates the clutch.
OS GIKEN MINI Cooper Products FAQ's
Created: September 08, 2009
Frequently Asked Questions !) if you are Internet Explorer 8 user and have experience that is not displayed correctly or that is not working, please check to enable “Compatibility View Setting” of your IE8. What is a differential and what does it do? Simply explained, a differentia..
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