The Ground Control coilover packages
listed below range from street performance to dedicated track.
Ground Control coilovers offer huge bang for the buck and will give
a new personality to your car. Coilover kits are based on KONI
rebound-adjustable dampers known for there performance and
durability. The dampers used in these kits are the short versions
specs specifically to operate at a low static ride height. Ground
Control offers custom damper valving for stiff track-dedicated
springs. Double-adjustable (separate rebound and compression) KONI
dampers are also available for further tuning and
control.
KONI dampers come pre-adjusted to
match the supplied spring rates using a shock dyno. Front struts
are are externally adjustable from underneath the hood, even with
the factory strut brace. KONI adjustable rear shocks are offered in
two versions. The standard version, which needs tools and a jack to
adjust, and the "top-adjust" version, which adjusts from inside the
trunk with no tools needed. The "top-adjust" option adds $100 to
the kit price (All kits except come standard with this option
except the Basic which is only available in standard adjust).
Optional double-adjustable dampers (Stage 3) have their compression
adjustment knobs located at the bottom of the damper.
Ground Control offers Complete
Shortened Front Strut Housing Machined from seamless DOM 1026 steel
alloy tubing with heavy-duty swaybar brackets welded on. This
design is much stronger and more rigid than any of the aftermarket
housings (most are actually modified stock housings), and these
units feature skip-welded gussets and retain all original brake
line and ABS tabs. The adjustable spring perches use an Allen head
bolt to clamp the single threaded perch into the correct position -
no secondary pieces are needed to jam the threaded perch into
position.
Coilover Packages (packages not
available for some applications):
Basic - Great
street or light-track package - Coilover kit DOES NOT INCLUDE front
adjustable mounts and includes provisions to use in conjunction
with stock strut mounts
- KONI single adjustable (rebound)
damper set with threaded front spring perches for height adjustment
(standard adjustment option ONLY)
- Custom selectable Eibach ERS spring
set (4)
- (2) height-adjustable rear spring
perches
- (4) German bump stops
- Associated hardware
- Provisions for use with factory
strut mounts (only included in basic kit)
Stage 1 - Adds
camber plates to enable fine tuning of front camber for increased
front grip
- Package takes the Basic package and
includes Ground Control's Street camber plates for added front
alignment adjustability. Camber plates are suitable for street use
as they do not add additional NVH (Noise, Vibration, Harshness) to
the cabin. Also in addition to the camber plates are Ground Control
Urethane/Alloy RSM for your fitment. Typically built with
medium rate springs for a compromise in street compliance and track
chassis support.
Stage 1+ -
Upgrade to a more track-oriented camber plate to provide further
front suspension control and adjustability with more focus on track
performance
- Package takes the Stage 1 and
upgrades the front camber plates to Ground Control's Hybrid
camber/caster plates. This is a spherical type mount with a cushion
at the base for minimal NVH increase for a great compromise between
street and track. These plates also add the ability for caster
adjustment for fine tuning the front suspension. Typically built
with medium rate springs for a compromise in street compliance and
track chassis support.
Stage 2 - Upgrate
to full solid front camber plates - less of a street compromise,
increased track performance
- Package takes the Basic kit and
adds spherical race camber/caster plates designed specifically for
track use and spherical RSM as well. These plates can be used on
the street but NVH will be increased. Typically built with
medium-to-high rate springs for increased chassis
control.
Stage 2+ - Custom
damper valving for dedicated track cars
- Package takes the Stage 2 to the
next level with custom-valved dampers to better handle the stiffer
spring rates of a track dedicated car. Typically built with high
spring rates for a further increase in chassis control. Only
suggested for street use for customers willing to compromise ride
quality for performance.
Stage 3 -
Double-adjustable dampers for ultimate control
- Package takes the Stage 2 and adds
separate compression adjustability for further suspension tuning.
The additional compression adjustment knob is located at the bottom
of the damper. This package can handle high spring rates and stiff
off excellent control for a relative smooth ride.
Suspension packages are shipped
completely assembled and preadjusted (baseline). All Ground Control
products carry a lifetime guarantee against defects when installed
and maintained correctly. We strongly recommend that these
performance products be installed by a competent, qualified
mechanic. Strut assemblies will be powder coated red or black
unless otherwise specified.
E30
Customers: You will need to ship your front strut
assemblies to Ground Control for modification. Ground Control will
shorten, reinforce, install perches, and powder coat the struts
specifically for your application. The fee for this service has
already been added to the price.