01
Damping calibrationDamping calibration
A 7-axis dyno and 22 chassis engineers rebuild the OE curve for every application instead of dropping in a generic valve stack. Independent compression and rebound adjustment available.
DAMPER
Shock absorber systems · Since 2016
Control the impact, own the rebound.
Wenzhong builds complete shock absorber programmes for passenger cars, Light trucks and heavy trucks. 200+ SKUs, 100,000-cycle dyno validation and damping calibrated from −40°C to 120°C — so every road becomes a force you can control.
200+ SKUs
Applications covered
100,000cycles
Dyno validated
48h
Prototype lead time
20countries
Export markets
01 — Engineering
We don't just fit parts.
We don't just fit parts.
We calibrate force.
The difference between two dampers hides in the third cycle of a dyno curve. We use data — not feel — to set compression and rebound.
02
Thermal validationThermal validation
−40°C to 120°C on the rig, with damping fade held under 8% after 100,000 full-stroke cycles — plus 720-hour salt spray and 3 million side-load cycles.
03
Vehicle coverageVehicle coverage
200+ SKUs across Japanese, German, American and Chinese platforms, with 400+ new applications added each quarter. VIN-level fitment lookup supported.
04
Delivery rhythmDelivery rhythm
85% of the catalogue held in stock. 48-hour prototypes, 7-day small-batch delivery, plus OEM branding, custom packaging and export documentation.
02 — Product rangeFive lines.
Five lines.
One factory.
Barrel dampers, struts, complete assemblies, truck dampers and PV tracker dampers — built on one site in Changyuan, Henan.
Barrel Shock AbsorbersView line Strut & DiscView line Complete AssembliesView line Truck & CommercialView line PV Tracker DampersView line
Every line has its own page with sub-categories and full specifications.
All products
03 — Damping character
One damper.
One damper.
Three characters.
Change the valve stack and the force–velocity curve changes with it. Switch modes to read the measured dyno data.
Test standard ISO 18867 · stroke ±50 mm
20°C · 0.1–2.0 Hz
Mean of rig measurements, tolerance ±5%
20°C · 0.1–2.0 Hz
Mean of rig measurements, tolerance ±5%
Comfort
Sport
Race
04 — From scan to shipment
Five gates
Five gates
before a damper ships.
Every gate has a record and a pass criterion. Nothing is released on experience alone.
STEP 01
Vehicle scan
Suspension geometry, unsprung mass and pick-up points are scanned into a 3D fitment model.
T + 0 DAY
STEP 02
Valve simulation
Target curve in, shim stack out. CAE models piston velocity against force.
T + 3 DAYS
STEP 03
Prototype build
Short-run samples are built and road-tested, logging body acceleration across surfaces.
T + 7 DAYS
STEP 04
Validation
100,000 cycles, salt spray, thermal extremes and vehicle durability. No pass, no release.
T + 21 DAYS
STEP 05
Production & traceability
Every line is tied to a batch code; critical process data is kept for 10 years, traceable to one unit.
T + 30 DAYS
04 — The plant
Inside the plant.
Inside the plant.
No stock footage.
Changyuan, Xinxiang. 6,000 m², assembly lines, dyno cells and a salt-spray bay. The film walks the floor from tube cutting to final packing.
CHANGYUAN PLANT
XINXIANG · CN
XINXIANG · CN
6,000m² floor area
200+active references
IATF16949 certified
20export markets
Certifications
Papers on the wall.
Automotive quality management, environmental compliance and registered intellectual property — all held by Henan Wenzhong Shock Absorber Co., Ltd.
+86 131 0631 5811
[email protected]
Wei 15th Rd North, Guihua Rd East, Nanpu, Changyuan, Xinxiang, Henan, China