HKSTUDIE SUS with CANCELLER for G80/G82

The G8X generation M has electrically adjustable dampers as stock, and
while they provide the stability typical characteristics of the M series at high
speeds, they still are a bit stiff in daily driving, even in “COMFORT” mode.
The HKSTUDIE SUSPENSION was developed based on the concept of
“Balancing high speed stability and comfort for city driving”.

 The mono-tube dampers are equipped, which enables the use of a large-
diameter piston and provides high-quality and stable damping force. In

addition, high rigidity inverted dampers are used for the front suspension,
as the strut type suspension system is subject to heavy bending loads
during acceleration, deceleration and cornering. This leads to excellent
handling.
 Fully-threaded shock body is adopted for both front and rear, allowing
adjustment to the desired ride height without affecting ride comfort by
changing the amount of damper retraction stroke or spring pre-load. Wheel
gap between the front tire and fender is noticeably big with the stock ride
height, so we set the front end slightly lower relative to the rear to obtain a
more stylish appearance and improve high-speed driving stability.
 The 30-level damping force adjustment allows the driver to set the
preferred damping force to suit various driving conditions, from city driving
to the race track. You will experience the evolved “The Ultimate Driving
Machine” by having balanced performance of smooth ride on the street and
a steady driving feel at high speed, perfect for the M series.
 The front unit features the camber-adjustable spherical-bearing top hats
for sharp handling. CNC machined aluminum top hats are adopted for the
rear unit.
 “Suspension Error Canceller" is included in the kit to delete the error light
upon removal of the electrically adjustable damper.
 By manufacturing in-house at our factory in Japan and conducting thorough
quality control, we are able to offer a 3-year/60,000 km product warranty
coverage from the time of purchase. We also offer overhaul and
customization services after use. In addition, we can change the spring rate
of the front springs for free at the time of product order.

Spring Rate [N/mm(kgf/mm)] F=69 (7.0) / R=137 (14.0)
Spring Length (mm) F=200 (Straight) R=250 (Straight)
Default Ride Height (mm) (Upper / Lower Limit) F=-18 (-3 / -40) / R=-9 (0 / -36)
Upper Mount F=Spherical Bearing / R=Spherical Bearing
Optional Spring [N/mm(kgf/mm] F=Available(Straight 8k or 6k) R=Unavailable

As a general characteristic of
piston valves, damping force is
less effective at low piston speeds
and increases at higher speeds.
The Dual PVS (The dual preload
valve system) used in this product
improves damping force at low
speeds and suppresses it at high
speeds. This results in less thrust
and bouncing, and improves tire
traction.

Typical bump stop rubbers are
intended to stop the stroke when
the suspension bottoms out, but
produce a strong impact as well.
The advanced bump rubber used
in this product is soft and long in
shape, allowing the bump rubber
to function as a sub-spring by
making the bump stop contact
earlier. The result is not only a
lessening of the impact at bottoms
out, but also an increase the
overall spring rate at every strokes.