Nissan Patrol GQ/GU & Ford Maverick - suited to 3"-
5" lifts
Australian Made from Australian 350 mpa
steel
Laser
cut
Bolt in - No chassis modifications
required
Spaces axle forward 10mm for improved clearance of larger
tyres.
When lifting you suspension, the vehicle's
caster and radius arm angle are changed.
Evolution drop boxes are designed to bring the
arm and caster geometry back to standard.
Vastly improves handling
Reduces load on radius arm bushes
Corrects radius arm angle
Reduced steering wobble
Ensures vehicle drives and 'tracks' correctly
The drop boxed drop the rear of the radius arm by 100mm, ideally
suited to 4" lifts, however can be used on 3-5" lifts as well, on lifts
above 5" they can be used in conjunction with caster bushes to further increase
caster angle.
Evolution drop boxes are slotted to allow the factory bush
support washer to be fitted without modification and still allow a full range of
motion.
When any suspension lift is fitted the pivot bushes are
preloaded. This will cause premature wear of the bushes and limit suspension
droop that is a desirable factor when fitting long travel suspension. Drop boxes
eliminates the preload on the rubber bushes releasing increase suspension travel
and increasing pivot bush life.
When raised suspension has been fitted radius arms are
pointing downward. When you hit a bump and the front axle need to go up and
forward, the forward movement is what contributes to the ride harshness, by
levelling the radius arm the up travel and rearward movement of the front axle
allows the axle/wheels to better follow the track surface increasing occupant
comfort and increasing traction.
The Drop Box is fitted between the gearbox cross member and
the chassis lowering the cross member by 8mm. Spacing the cross member is a
common modification when lifted suspension has been fitted and drive line angles
need to be corrected.
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