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Drivetrain Products
| Spec MINI Cooper S Clutch Kit Stage 1 | |
 | Stage 1
High-clamp pressure plate, steel-backed woven organic disk, bearings, and a tool.
call for pricing on
Stage 2
High-clamp pressure plate, segmented chatter-free Kevlar disc, bearings, and a tool.
Stage 3
High-clamp pressure plate, 3-piece disc with carbon or ceramic material, bearings and a tool. ULTIMATE STREET/STRIP CLUTCH! Sharp but smooth engagement with light pedal engagement.
| GSP Price:
$419.00
More Info.. |
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| Spec MINI Cooper S Clutch Kit Stage 4-5 | |
 | Stage 4
High-clamp pressure plate, 2-piece rigid disc, bearings and a tool. Available in 3 or 6 wing design for serious road racing and drag racing.
Stage 5
High-clamp load pressure plate, iron disc, bearings and a tool. All clutches are special order items. | GSP Price:
$489.00
More Info.. |
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| Madness Motorworks MINI Cooper S Lightweight Flywheel | |
| Madness billet aluminum flywheels are CNC machined and exceed SFI standards for high stress racing applications. These units are recommended for highly modified street or racing vehicles, and for mildly modified street cars that can benefit from reduced rotating mass without the loss of daily drivability.
The body of the flywheel is made of tempered aluminum 6061 T6 for ultimate strength and lightest possible weight. The 1/4 inch thick friction plate is a 1050 high carbon alloy, for incredible durability with any friction disc material, even iron. The plates are secured to the body by aerospace fasteners or stainless steel rivets, depending on the application. These fasteners were chosen because of their exceptional strength and corrosion resistance. The ring gears are pressed on and secured with grade 10 fasteners. The gear is also heat treated for longevity. They are effective, durable and almost too pretty to install!
Cooper S Factory Dual Mass Flywheel weighs 27 lbs. Lightweight flywheel weighs 14.5 lbs.
Transmission removal is required to install this product so while you're in there, why not consider one of our Performance Packages which includes a high performance clutch and Quaife LSD. Your cost savings in labor would equal roughly $1000 if you ever planned to install one of these in the future. This is a special order item.
| GSP Price:
$429.00
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| Quaife MINI Cooper S Limited Slip Differential, LSD | |
 | Do you really drive your 02-06 Mini Cooper S? Autocrosser? Road racer? Spirited canyon carver?
If you answered "yes" to any of those (or all of them), then you need a Quaife Automatic Torque Biasing (ATB) differential!
A Quaife (pronounced KWAF)ATB limited slip differential (LSD) powers both drive wheels of your Cooper S under nearly all conditions, not just one like the OEM open differential. Your Mini's open differential shifts power to the wheel with less grip (along the path of least resistance), which means the wheel that has no grip, spins even more. A Quaife ATB, however, does just the opposite. It senses which of your 02-06 Mini's wheels has better grip, and automatically biases the power to that wheel. This power transfer is smooth and constant, and never completely removes power from the other wheel.
In a drag-race style, straight-line acceleration run, your Quaife ATB LSD equipped MCS will have close to an ideal 50/50 power split to both drive wheels. The result is essentially twice the grip of an ordinary, open differential. (They don't call open diffs "peg legs" for nothing). You know the famous one-wheel burnouts? That's not going to happen to a MCS with a Quaife ATB. More than likely, your Quaife ATB equipped Cooper S will just hook-up-and-go, but if you have enough power, two-wheel burnouts are at your disposal.
More common among 02-06 Mini Cooper S owners is the desire to get more power to the ground while taking it to the twisties. A MCS will lose traction on the wheel that is on the inside of the corner, and with the OEM open-diff, power is transferred to that inside wheel, the result: No power to the outside tire that is loaded up. A Quaife ATB LSD biases power to the outside wheel, reducing inside-wheel spin. With the loaded tire getting power, you can get on the gas earlier and get your Cooper S going faster out of the corner. The 02-06 MCS Quaife ATB is great for daily commuting, canyon carving, autoxing or club racing. MCS owners won't have to put up with locking mechanisms or spools (common in other types of LSDs) that tear the steering wheel out of your hands when the LSD activates while cornering. Because it behaves like an open differential during ordinary driving, street drivers will have trouble telling it's there until the Cooper S is really pushed to it's limits. Quaife ATB differentials have been proven to work in everything from SCCA racing to Formula 1. It provides autoxers with such an advantage, it has become a prerequisite for a winning Mini Cooper S.
The Quaife ATB also controls loss of traction when the front wheels of your 02-06 Mini Cooper S are on slippery surfaces such as ice, snow or mud, providing the appropriate biased traction needed to overcome these adverse conditions. The Quaife differential provides constant and infinitely variable drive to your Mini's wheels. Power is transferred automatically without the use of normal friction pads or plates seen in other limited-slip designs. The Quaife's unique design offers maximum traction, improves handling and steering, and puts the power where it is needed most. A definite advantage whether your Mini Cooper S is on the track or on the street.
Quaife ATBs are extremely strong and durable and since the 02-06 MCS Quaife ATB is gear operated, it has no plates or clutches that can wear out and require costly replacement. Every Mini Cooper S Quaife ATB differential comes with something else other brands don't have: A Limited Lifetime Warranty. This warranty applies even when used in Minis that are raced!
This is a special order item. | GSP Price:
$1199.00
More Info.. |
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| OS Giken Limited Slip Differential, LSD | |
 | FINALLY A TRUE 100% LOCKING DIFFERENTIAL FOR THE MINI!!!
The OS Giken SUPER LOCK LSD for the MINI is a patented design which allows for full adjustment potential and true 100% locking capability. Quaife LSD's will spin the wheel if the wheel comes off the ground, this typically happens on the track when maximizing track width and taking full advantage of the rumble strips. Under normal driving conditions it operates with the smoothness of a normal differential, but once power is applied it transforms into a progressive 100% locking LSD, thanks to its unique design which allows for up to 28 clutch disks. Initial torque and ramp angles are tunable to your particular needs, whether for street, drift, circuit, auto-x, etc. Durability is maximized through a superior design, usage of only the finest materials, and extreme precision during manufacturing. There is no break-in period required. Corner with utmost confidence and reduce your lap times!
Fits all R53 and R56 MINI's from 2002 and up. | GSP Price:
$1590.00
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| Madness Motorworks R53/R56 New MINI Cooper S Short Shifter | |
 | This short shift kit reduces shift throw 20%. Extensive testing indicates that this is the ideal amount of reduction to maintain shifting accuracy and feel. We found that more than a 20% reduction in throw made the shifter feel "gummy" due to the extreme angle put on the shifter cables. The kit includes a shift link extension that simply slips on the end of your existing factory lever, thereby reducing shift throw distance. The extension is black oxide coated preventing corrosion and uses 3 locking set screws to ensure a secure long term connection. Heat shrink tubing is also included as an extra measure of security, preventing dirt or dust contamination from entering the assembly. No need to replace the whole shifter assembly or purchase a new shift knob. Install time is quick and easy taking less than an hour. | GSP Price:
$80.00
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| Madness Motorworks Stage 1 Drivetrain package | |
 | This package is comprised of our ACT Lightweight Flywheel, short shift kit and your choice of Stage 1 through 5 Clutch. Significant dollar savings are to be had when doing these 2 upgrades together. You will only have to drop the transmission once! | GSP Price:
$925.00
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| Madness Motorworks Stage 2 Drivetrain Package | |
 | This package is comprised of our ACT Lightweight Flywheel your choice of Stage 1 through 5 Clutch, Quaife Linited Slip Differential and our short shift kit. This package is the ultimate drivetrain upgrade, providing the ultimate in road and clutch grip. This is the same setup used on our MINI Cooper S that competed in the Car and Driver Supertuner Challenge.
| GSP Price:
$2300.00
More Info.. |
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