OS GIKEN SUPER LOCK LTD SLIP
DIFFERENTIAL - R53/R56/55/57 COOPER S
Clutch Type Limited Slip for your MINI offers true 'track level' performance,
unlike the torsen type factory offered lsd which compromises for the street. The
factory optioned limited slip (which is no longer available) is limited to 31%
lock, the Giken unit can reach 100% lock when sufficient torque is applied!
The factory optional Electronic Differential Lock Control (standard on JCW)
is a result of the factory's cost cutting effort and works adequately for the
street, but this Giken unit WILL outperform the EDLC on the track. The EDLC
uses independent braking to limit wheel spin in order to increase safety on
the street with some inherent understeer on the track. Serious racers report
the EDLC is NOT adequate for the track, not to mention the EDLC causes the brakes
to overheat on some tracks, resulting in premature brake fade!
The Giken unit transfers power and allows you to slingshot out of a turn -
customers reports no under steer and no torque steer - which would you rather
have on the track??
Giken's Clutch type limited slip will always work, consistently and predictably,
even if you should lift the inside wheel off a berm in a turn - Torsen type
limited slip becomes an open differential if the inside wheel should leave the
ground - which is the last thing you want to happen!
For 6-speed manual transmission equipped 2007+ R56 MINI Cooper S Hatchback,
2008+ R55 MINI Cooper S CLUBMAN, and 2009+ R57 Cooper S Convertibles, including
JCW models.
OS Giken utilized its accumulated racing knowledge and engineering experience
to develop its own limited slip differential. Four years of extensive research
and development lead to a new and revolutionary LSD design with the capacity
to house an unprecedented number of friction plates (12 plates for the MINI)
and thus the OS Super Lock LSD was born. The increased number of plates directly
has not only dramatically improved our LSD design's locking force and enables
it to lock fully and completely. An added benefit to being a fully locking mechanism
is that less heat is generated, thus resulting in incredible durability and
reliability.
OS Giken MINI Cooper SUPER LOCK LSD advantages:
.:. A true 100% locking LSD: No movement of internal parts means less heat
is generated while in operation and less wear of the friction disks. Less initial
torque loss and incredible longevity and durability can be realized.
.:. Proven Durability and Reliability: No drop in performance or loss of initial
torque, even during long and stressful endurance races.
.:. Straight line stability: During a drag race, our LSD will lock 100% and
provide torque equally to each powered wheel. Stable and straight runs will
result thus eliminating torque steer in FF applications and lower the chance
of drive-shaft breakage.
.:. Customizable: Lock timing can be customized by adjusting the pressure spring
inside the pressure ring. Tune the LSD to custom fit any application and set-up
of your desired vehicle and driving style/skill level for optimum performance.
.:. By using a pressure control ring, the LSD responds smoothly to the application
of initial torque. Lock engagement is smooth and the impact vibration is significantly
reduced. This increases the stability of the vehicle and allows more freedom
for the driver to trace the desired racing line.
.:. On snow tracks and regions with unstable road conditions, our OS SUPER
LOCK LSD easily adapts and adjusts tire rotation to increase vehicle stability.
Bad weather and harsh road conditions are not a problem when the vehicle is
equipped with an OS SUPER LOCK LSD
.:. Less under-steer during cornering: When entering into a corner with the
throttle closed, the spring inside the pressure control ring will react accordingly
and immediately return the differential's internal components to the original
initial torque settings and thus creating less under-steer. However, with a
conventional differential, there will be a lapse of time before returning to
the initial torque settings, as it takes time for the cone springs to react
and make contact with the friction disk in order to close the pressure ring.
.:. When exiting from a corner, our LSD's transition to the full 100% lock
position is smooth and predictable. This gives the vehicle better traction and
stability, resulting in better lap times while racing.
.:. OS Giken SUPER LOCK LSDs do not require any break-in process. OS SUPER
LOCK LSD's are composed of parts that have been precisely machined to exact
specifications and are ready to use upon installation.
In racing applications, the function of the LSD is to allow the drive wheels
to apply equal traction under acceleration and deceleration. Unlike our competitors'
products, the OS Giken SUPER LOCK LSD is engineered to be extremely responsive
to throttle input to smoothly lock or loosen accordingly. Through its innovative
and patented design, up to twice as many friction plates are able to fit into
the housing when compared to our competitors' products, enabling the OS Giken
SUPER LOCK LSD to achieve true 100% locking capability.
Unlike our competitors, the OS Giken SUPER LOCK LSD is also customizable by
adjusting the spring inside the pressure ring. Additionally, its superior design
allows for excellent streetability, virtually eliminating the “chatter”
associated with other clutch type LSD brands.
Each component of every OS Giken SUPER LOCK LSD uses only the highest grade
materials and manufacturing processes and is constructed and finished to extremely
tight tolerances, eliminating any “break-in” period necessary with
other brands. Due to its superior design and extreme care throughout the manufacturing
process, there has yet to be a case recorded of an OS Giken SUPER LOCK LSD failing
in the field, or even requiring a rebuild!
As expected from OS Giken, our LSDs are not only made from the highest quality
materials, our precise machining, forged gears, and sound engineering makes
our LSDs the most durable and reliable race performance LSDs available.
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.
Read OS Giken's FAQ's.
Note: Depending on inventory, this product may need to be supplied from the
manufacturer overseas. Delivery 'may' take 4 weeks.