Products ZMS RS4


ZMS Series Type RS4  4 way adjustable with external reservoir tank

(32 steps low speed/ 15 steps high speed rebound, 15 steps low speed & 15 steps high speed compression)

  • ZMS-RS4 kit

    Super Extreme Performance from Amazing Unique Design!

    Accurate rebound and compression fine adjustment coupled with oil temperature stability via the external reservoir tank!

    ZMS-RS4 kit – 4 way adjustable, 32 steps low speed/ 32 steps high speed on rebound, 15 steps low speed/ 15 steps high speed on compression, monotube coilover kit with external reservoir tank

    Our flagship coilover kit for super street performance all the way to serious racing!  The supreme coilover kit using 4-way adjustable monotube setup with external reservoir tank.  Rebound control comes via the main damper dual piston system with compression adjustment controlled via the external reservoir for linear reaction to adjustment.  Low speed rebound adjustment is 32 steps via oil flow and pressure through the piston controlled by a proprietary design oil pressure release valve. High speed rebound adjustment is 32 steps via the main piston rod needle, allowing for maximum accurate adjustability.  Low and high speed compression adjustments are 15 steps each respectively via the external reservoir tank, thus allowing for near perfectly linear reaction to adjustments.  Moreover the extra oil capacity in the external reservoir tank will allow for extra volume for cooling and thus avoid performance degradation from overheating of the shock fluid.

    ZMS series dampers use two size pistons; 56mm external diameter (OD) cylinders utilizing 48mm OD pistons and 47mm OD cylinders utilizing 42mm OD pistons.  There 3 different design pistons in 2 sizes for a total of six different piston types.  Damper piston shims come in 10 different sizes for our ZMS series dampers.  As a result, our shim tuning range is much wider compared to older model JIC and competitor manufacturer products.  Damper rods are 16mm diameter with hard chrome coating.  All pistons are fully CNC machined.

    For our monotube dampers, larger diameter cylinders are made from 6061 aluminum and smaller diameter cylinders are made from 301 high strength stainless steel with a special stainless steel finishing coating giving an attractive natural titanium color.  Our inverted monotube damper body cases are made of hard stainless steel manufactured using precision machining with specialized hard chrome surface coating.  High precision cylinder bore honing production process and specialized surface coating allows all our products to meet the most stringent strength and performance requirements. This material choice and attention paid to surface finishing means that our products are designed and built for long life with exceptionally low piston wear and particular resistance to corrosion caused by rain, dirt, winter time road salt etc.

    Most of our kits come with front upper mounts fitted with pillow ball bearings.  Most of our kits for Macpherson strut applications will come with camber and caster adjustment system built in.  All upper mounts are 40% thicker than before for added strength.  Lower brackets are fully CNC machined to optimize weight savings and are anodized.  All lower brackets are machined from hard aluminum and are height adjustable.  Macpherson strut application lower brackets are designed for optimal strength to weight ratio by utilizing a H-beam design.

    All ZMS-RS4 kits use a special blend of 100% synthetic oil for better and more stable performance.  JIC USA/ ZIEL MOTORSPORTS INC. promises maintenance and tuning parts and technical support that is second to none.

  • Oil flow Control via special design needle:  Damper adjustment is via oil flow and pressure control using our proprietary designed need that optimizes oil flow smoothness and linearity.

    3 different design pistons for focused application:  We use in-house designed 48mm and 42mm large diameter aluminum pistons for better performance and easy tuning.  Our pistons are fully CNC machined to exacting tolerances and recognizing that there is no one size fits all, we have designed 3 different types of pistons for use in street, tuned or race applications.

    Cylinder Assemblies:  To ensure uniform strength and accuracy of alignment throughout the vertical place for our cylinder assemblies, all cylinder top caps and cylinder case bottom caps are screwed on and locked in place before welding.  This removes the problem of deviation of the alignment between body and cap during welding, providing a truly straight assembly with uniform high rigidity, thus reducing uneven wear on both the hard chrome and the damper case slide bearings and rod slide bearings.

    Special thick hard chrome on cylinder bodies:  All cylinder bodies are treated with a thicker than usual layer of hard chrome with the threaded damper case made from hard stainless steel to improve corrosion resistance and ensure longevity in use.

    Rod Size and finishing:  All rods are 16mm in diameter and treated with thick hard chrome to improve durability

    Damper shims:  12 different size shims are used in our dampers allowing for fine tuning and giving our users a range of adjustability and tuning breadth unheard of in old model JIC and competitor manufacturer products.

    Pillow Ball Upper Mounts:  Most S series kits come with front upper mounts fitted with pillow ball bearings.  Kits for Macpherson Strut applications come with camber and caster adjustment systems built in.  All upper mounts are 40% thicker than before for added strength.

    Lower Brackets:  All lower brackets are machined from hard aluminum and are height adjustable.  Macpherson strut application lower brackets are designed for optimal strength to weight ratio by utilizing a H-beam design.

    Oil:  All our S kits use a special blend of synthetic oil for better and more stable performance with optimized viscous stability of long and hard use.

    Maintenance support and parts availability:  All S kit customers will have access via our partners or ourselves to maintenance support and spare parts for rebuilding or customization.

  • ZMS series Type RS4 - external reservior tank mono tube suspension Kit

    4 way 32 step slow speed + 15 step high speed Rebound + 15 step hi speed + 15 step low speed compression adjustable
    * Spring rate will change by the damper specifications and Intended use and custom order made request
    MakeModelTypeYearPart # Spring RateSpring TypeFr Upper MountRe Upper MountFr Lower Mount Re Lower mount Accessories NoteMSRPDetail Info
    IntegraType-R92-95RS4-DC2TR-DS14K/12KF Dual, R Single
    NSXNA191-00RS4-NA1-DS8K/12KF Dual, R Single
    3 seriesE46 M399-05RS4-E46M3-DS16K/12KF Dual, R Single
    E90 Non-M306-12RS4-E90-DS14K/10KF Dual, R Single
    E92 M306-13RS4-E92M3-DS16K/10KF Dual, R Single
    5 seriesE60 M506-11RS4-E60M5-DS16K/10KF Dual, R Single
    CamaroMK510-RS4-CAMARO-MK5-DS16K/12KF Dual, R Single
    CorvetteC605-RS4-C6-DS16K/12KF Dual, R Single
    MustangFOX499-04RS4-FOX4-DS16K/10KF Dual, R Single
    D2C05-09RS4-D2C-DS16K/10KF Dual, R Single
    CivicEG92-95RS4-EG-DS14K/12KF Dual, R Single
    EK96-00RS4-EK-DS14K/12KF Dual, R Single
    S2000AP199-RS4-AP1-DS16K/12KF Dual, R Single
    ISFUSE2006-RS4-USE20-DS16K/10KF Dual, R Single
    Elise05-12RS4-ELISE-DS8K/10KF Dual, R Single
    MiataNAB89-05RS4-NAB-DS12K/7KF Dual, R Single
    MX5NCEC06-RS4-NCEC-DS12K/9KF Dual, R Single
    RX7FD3S93-99RS4-FD3S-DS12K/7KF Dual, R Single
    RX8SE3P04-11RS4-SE3P-DS16K/9KF Dual, R Single
    Mini CooperR5303-06RS4-R53-DS10K/8KF Dual, R Single
    R5607-12RS4-R56-DS10K/8KF Dual, R Single
    Evo7/8/9CT9A01-08RS4-CT9A-DS14K10KF Dual, R Single
    EVO10CZ4A09-RS4-CZ4A-DS14K/10KF Dual, R Single
    240SXS1389-93RS4-S13-DS Z32 R Fork16K/12KF Dual, R Single
    S1389-93RS4-S13-DS16K/12KF Dual, R Single
    S1495-99RS4-S14-DS Z32 R Fork16K/12KF Dual, R Single
    S1495-99RS4-S14-DS16K/12KF Dual, R Single
    350ZZ3303-08RS4-Z33-LS 18K/14K
    GTRR3509-RS4-R35-DS18K/12KF Dual, R Single
    944, 96886-95RS4-968-DS16K/12KF Dual, R Single
    964 Early89-90RS4-964E-DS8K/11KF Dual, R Single
    964 Later91-94RS4-964L-DS8K/11KF Dual, R Single
    98697-05RS4-986-DS8K10KF Dual, R Single
    98706-11RS4-987-DS8K/10KF Dual, R Single
    99395-98RS4-993-DS8K/12KF Dual, R Single
    996 C299-05RS4-996-DS8K/12KF Dual, R Single
    996 GT301-05RS4-996GT3-DS8K/14KF Dual, R Single
    996 TT00-05RS4-996TT-DS8k/12KF Dual, R Single
    997 C206-11RS4-997-DS8K/12KF Dual, R Single
    997 GT306-11RS4-997GT3-DS8K/14KF Dual, R Single
    997 TT, C406-11RS4-997TT-DS8K/12KF Dual, R Single
    STiGDB05-06RS4-GDB-DS14K/9KF Dual, R Single
    GRB07-RS4-GRB-DS14K/12KF Dual, R Single
    BRZZN612-RS4-ZN6-DS12K/9KF Dual, R Single
    Volks Wagen
    Jetta, GolfMK5, MK606-11RS4-GOLF-MK5-DS9K/6KF Dual, R Single
  • Coming Soon