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  1. Maximum Motorsports 99-04 Cobra Grooved HD Bilstein Shock for MM IRS Coil Over Kits - GBE5-2959-H0
    $158.00

    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:


    Conventional Spring Sets
    MM Road & Track
    H&R Race
    H&R Super Sport
    H&R Sport
    Eibach Pro-Kit
    Stock Springs

    Coil-Over Spring Rates:


    475 - 525 lb/in

    Firm, yet good ride quality, as is expected of a performance car
    Includes a machined groove for a coil-over conversion
    Does not include lower eyelet bushings, as urethane bushings are included in an MM Rear Coil-over Conversion Kit. To install without a coil-over kit, order bushing kit MMSM-105
    Bilstein struts and shocks are made with patented mono-tube technology
    High nitrogen gas pressure prevents oil foaming and resultant fading
    Monotube design has better heat dissipation than twin-tube dampers, keeps the oil cooler, and decreases heat-induced damper fade
    Velocity-sensitive valving improves ride quality
    Each Bilstein strut and shock is tested on a shock dyno
    Includes an integral, progressive bump stop
    Bilstein struts and shocks include dustcovers
    MM Sport series and MM Race series dampers are better suited for more aggressive 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 More
  2. Maximum Motorsports 87-04 Mustang Grooved Sport Series Shock for MM IRS Coil Over Kits - MB-2959-S1
    $239.97

    1987-2004 Mustang, MM Sport series shock for IRS applications, grooved to accept MM coil-over conversion kit.


    Intended for street-driven Mustangs with rear coil-over spring rates of 500 lb/in to 600 lb/in.
    Includes an integral bumpstop
    Shocks do not include lower eyelet bushings because they are part of the coil-over conversion kit these shocks are intended to accompany.

    Features

    Firm, yet good ride quality, as is expected of a performance car
    MM shocks are made with patented mono-tube technology
    High nitrogen gas pressure prevents oil foaming
    Monotube design has better heat dissipation than twin-tube dampers, keeps the oil cooler, and decreases heat-induced damper fade
    Velocity-sensitive valving improves ride quality
    Each MM strut and shock is tested on a shock dyno
    MM rear shocks come with an integral, progressive bump stop
    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

    MM 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

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