Mitsubishi Evolution X. Manual — part 65

TECHNICAL FEATURES

TSB Revision

GENERAL

00-10

SUSPENSION SYSTEM

M2000023000879

FRONT SUSPENSION

The MacPherson strut type suspension is adopted.

.

AC705713 AC

Stabilizer bar

Coil spring

Strut assembly

Stabilizer link

Lower arm

Front axle crossmember

Strut insulator
assembly

Bearing

Pig-tail shape:
Coil spring with
narrowed top edge.

Front axle
crossmember stay

Front axle crossmember

Front axle
crossmember bar

Center member

<Crossmember reinforcing construction>

TECHNICAL FEATURES

TSB Revision

GENERAL

00-11

IMPROVEMENT IN SUSPENSION
RIGIDITY

• Based on the highly rigid full-flat crossmember,

by adding the reinforcement part such as a stay,
the respective rigidity of the crossmember has
been improved significantly.

• The forged knuckle has been adopted. The defor-

mation of knuckle by ground contact force has
been suppressed, and the camber rigidity and lat-
eral rigid brake caliper supporting rigidity have
been improved.

.

IMPROVEMENT IN CORNERING
PERFORMANCE

• The 18-inch low-aspect ratio tire has been

equipped, the wheel tread has been widened,
and the suspension rigidity has been improved,
for better cornering performance and cornering
limit.

• By adopting the 18-inch low-aspect ratio tire, the

caster trail amount has been increased, resulting
in the better steering feel and steering response
for slight steering operation.

• The caster angle has been increased and the

camber angle to the ground while operating the
steering wheel has become negative, for better
cornering performance within the middle and
large steering angle range.

• By widening the stabilizer diameter, the optimal

roll posture for cornering limit improvement has
been secured.

.

IMPROVEMENT IN QUALITY

• The compact lower arm pillow ball bush has

newly been designed. The stroke feeling by the
pillow has been improved, the rubber damping
characteristics has been tuned, and the vibration
from the ground has been reduced, for improved
quality.

• The Bilstein shock absorber and the Eibach coil

spring

*

have been established as options.

NOTE:

*

: The Eibach coil spring has widely been

adopted in the motor sport field; sports vehicles in
Europe, F1, WRC, etc.

.

WEIGHT SAVING

• To respond the increase of weight and ground

surface force by adopting the 18-inch low-aspect
ratio tire, the suspension structure has been opti-
mized, resulting in weight saving.

• By adopting the Bilstein shock absorber, the

outer cylinder thickness has been reduced,
resulting in weight saving.

.

IMPROVEMENTS IN RELIABILITY

• The deep groove upper bearing, which support

the vehicle weight to the strut upper insulator, has
been enlarged and sealed for the better reliability.

• The upper part of the coil spring has been

squeezed, making the big-tail shape. Conse-
quently though the vehicle weight is increased
and the spring constant is high, the gap between
coils can be widened, reducing the rattle noise
and scratches.

.

HEXAVALENT CHROMIUM-FREE
COMPONENT

• Hexavalent chromium has been eliminated from

bolts and nuts.

.

LEAD-FREE COMPONENT

• The lead-free grease has been adopted for the

ball joint.

REAR SUSPENSION

The low mount multi link suspension has been
adopted.

TECHNICAL FEATURES

TSB Revision

GENERAL

00-12

.

IMPROVEMENT IN SUSPENSION
POSITIONING RIGIDITY

• The arm layout has been optimized. (Each arm

support span has been widened.)

• The rigidity of the arm installation part has been

improved. (Better rigidity of crossmember, addi-
tion of trailing arm bracket)

.

IMPROVEMENT IN CORNERING
PERFORMANCE

• The 18-inch low-aspect ratio tire has been

equipped, the wheel tread has been widened,
and the suspension rigidity has been improved,
for better cornering performance and cornering
limit.

• By adopting the non-linear coil spring, the suffi-

cient wheel stroke has been secured, and the
cornering stability not affected by the road condi-
tion has been obtained.

AC704697AB

AC704736

AC704737

Trailing arm assembly

Trailing arm bracket

Rear suspension
crossmember

Upper arm

Shock absorber assembly

Nonlinear coil spring

Stabilizer bar

Lower arm

Control link

Upper arm

Lower arm

Enlargement
of vertical span

Lower arm

Control link

Enlargement of
anteroposterior span

TECHNICAL FEATURES

TSB Revision

GENERAL

00-13

• By widening the stabilizer diameter, the optimal

roll posture for cornering limit improvement has
been secured.

.

IMPROVEMENT IN STROKE FEELING

• The numbers of pillow ball bush and ball joint on

the arm installation part have been increased for
the better road-holding quality of the suspension.

.

IMPROVEMENT IN DAMPING FEELING

• The shock absorber, which is arranged on the

same axle for the coil spring, has been mounted
with a knuckle for better absorber efficiency.

• The shock absorber installation angle has been

optimized.

.

IMPROVEMENT IN QUALITY

• The Bilstein shock absorber has been estab-

lished. <GSR: optional equipment, MR: standard
equipment>

.

IMPROVEMENT IN ALIGNMENT
ACCURACY

• Arms have been installed to the lattice cross-

member, and the rear suspension has been bro-
ken down into sub assembly for the better
alignment accuracy.

.

WEIGHT SAVING

• The aluminum forged upper arm, trailing arm,

and control link have been adopted for weight
reduction and high rigidity.

• The light weight lower arm made with a steel pipe

has been employed.

.

HEXAVALENT CHROMIUM-FREE
COMPONENT

• Hexavalent chromium has been eliminated from

bolts and nuts.

.

LEAD-FREE COMPONENT

• The lead-free grease has been adopted for the

ball joint.

BASIC BRAKE SYSTEM

M2000024000593

The brake system has high reliability and durability,
and provides an exceptional braking performance.

AC708805AB

Brake booster

Master cylinder

Front disc brake

Reserve tank

Rear disc brake

Brake pedal

Hydraulic unit