Product Reviews for 2015-17 Mustang EcoBoost Steeda Adjustable Differential Bushing Insert System - Urethane 555-4443
Steeda Autosports has once again taken the S550 Mustang to the next
level of performance and comfort with the exclusive 2015 Mustang
EcoBoost Steeda Adjustable Differential Bushing Insert System -
Urethane 555-4443! When their engineers sat down to design this kit,
they had to come up with a way to increase performance without
sacrificing an ounce of drivability all while keeping the car quiet!
the competitors' kits that will absolutely increase NVH (noise,
vibration, harshness), take 3-4 hours to install and force you to
permanently modify the rear IRS suspension with a sawzall, Steeda’s
does not! Steeda's kit installs in around 1 hour, adds ZERO increase in
NVH, is adjustable and can be easily removed - it simply doesn’t get
any better than this!
pinion angle changes, increase traction, eliminate wheel hop and
differential deflection with Steeda's new kit. Made from high-strength
urethane to Steeda's exact specifications and durometers, this kit
comes with 2 different bushing options - red 'street' 80
durometer bushings and black 'performance' 90 durometer
bushings. Both bushing options will increase performance with no
increase in NVH, a Steeda-exclusive.
kit adds the strength and support the OEM bushings need to perform the
way customers intended. Once again, this is not a permanent
modification - there is no drilling, cutting or pressing required.
Simply loosen and remove a couple bolts and this kit installs in around
1 hour. Bushings are included for both the front and rear differential
mounting locations. Grade 10.9 hardware is included with zinc-plated
For hardcore enthusiasts that want ZERO pinion deflection, try the 555-4440
kit. This kit features aluminum bushing inserts. For race-use only as
it will increase NVH and gear noise.
IRS differential movement while increasing traction and eliminating