Extreme Performance from Amazing Design!

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

ZMS-RS kit - 2-way adjustable on rebound and compression, monotube coilover kit with external reservoir tank

Our ZMS-RS2 kit use a single piston damper coupled with external reservoir tank.  Rebound adjustment for the ZMS-RS2 kit single monotube damper is 32 steps via oil flow and pressure by an all new design needle.  Compression adjustment is 15 steps 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-RS2 kits use a special blend of synthetic oil for better and more stable performance.  We promises maintenance and tuning parts and technical support that is second to none.