Currently Shopping by:
You have no items in your shopping cart.
1999-04 Cobra Mustang, Bilstein HD series IRS shock, with groove for coil-over conversion kit, dust boot and integral bumpstop.
If you do not already have, or purchase now, an MM rear coil-over conversion kit, you must add urethane shock eye bushings MMSM-105 to install this grooved rear shock.
Included in this shock's price is a charge for grooving it for a coil-over conversion.
Suitable for both stock-location springs and coil-over conversions. See chart below for spring recommendations.
Heavy Duty (HD) Bilstein Spring Recommendations:
Coil-Over Spring Rates:
Tech
Heavy Duty (HD) Bilsteins work very well in street applications with a variety of both conventional springs and coil-over conversions. They are designed to deliver the best possible ride quality coupled with impressive street performance. The HD series dampers were not designed for use with overly aggressive spring rates, particularly in coil-over conversions. For dampers more suited to aggressive spring rates, see the MM Sport series and MM Race series dampers.
The HD series rear shocks must have a groove machined in the shock housing to accept the MM rear coil-over conversion kit.
While they are non-adjustable, Bilstein's unique deflective-disc valve design instantaneously self-adjusts to changing road surfaces. Their performance does not degrade with age, usage, or heat, requiring no compensating manual adjustments as with other brands. Bilstein uses a patented mono-tube design that allows for a larger piston size than is possible with a twin-tube damper. The mono-tube design provides better heat dissipation to keep the damper's oil cooler, and decreases heat-induced damper fade. High-pressure nitrogen gas prevents oil foaming and fading. Every Bilstein damper is tested on a shock dyno before leaving the factory to ensure quality.
All Bilstein struts and shocks include dustcovers suitable for use with conventional springs.
Learn More1987-2004 Mustang, MM Sport series shock for IRS applications, grooved to accept MM coil-over conversion kit.
Features
Firm, yet good ride quality, as is expected of a performance carMM Sport Series struts and shocks are the perfect choice for a dual-purpose car that sees aggressive street driving and occasional open-tracking. Designed to control aggressive coil-over spring rates while still maintaining good ride quality, the MM Sport struts and shocks are intended for a high performance street-driven car equipped with coil-overs. The MM Sport series rear shocks are ready to accept the MM rear coil-over conversion kit; they are manufactured with the groove in the shock body that is required by a coil-over conversion kit.
All MM non-adjustable struts and shocks utilize patented mono-tube technology. Compared to twin-tube dampers, these provide better heat dissipation to keep the damper's oil cool, which decreases heat-induced damper fade. The highest nitrogen gas pressure available prevents oil foaming and fading. Every MM damper is tested on a shock dyno before leaving the factory to ensure quality.
All MM rear shocks come with an integral, progressive bumpstop. All MM struts and shocks include dustcovers.
Learn More