Multi Layer Valve Shim

Name: Multi Layer Valve Shim
SKU: 119

Multi Layer Valve Shim stacks from XIAYI combine thin secondary layers down to 0.05 mm with rigid primary discs up to 0.8 mm, opening progressively into one linear damping curve. At our factory the stack is drawn around your vehicle weight, not a catalog — comfort, handling or heavy load.

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Product Description

Single shims give you one damping point; multi-layer stacks give you a damping curve. Our Multi Layer Valve Shim program combines primary shims, thin secondary shims and check valve shims into customizable stacks that open progressively — soft at low speed, firm at high speed — the geometry behind linear damping in performance cars, modified builds and racing suspensions.

The Five Building Blocks

Shim Type	Structural Feature	Core Function	Pain Point Solved
Primary shim	Thick (0.2–0.8 mm), high rigidity	Controls main oil flow, bears main damping	Poor support, high-speed floating
Secondary shim	Thin (0.05–0.15 mm), good elasticity	Tunes low-speed, small-vibration damping	Low-speed bumps, fine vibrations
Shim stack	Multi-layer, mixed thicknesses, customizable	Achieves linear damping curve	Unstable damping, poor handling
Check valve shim	Thin flexible, one-way opening	Controls oil return, optimizes rebound	Stiff rebound, secondary bouncing
Reinforced shim	Thickened, high-strength material	Withstands heavy impact	Heavy-load fracture

Stacks by Driving Intent

Stack Style	Design Feature	Driving Experience	Target Users
Comfort stack	Mainly thin shims, early opening	Soft, strong vibration filtering	Family commuting
Balanced stack	Thick/thin mix, linear opening	Comfort with support	Daily multi-road use
Handling stack	Thickened primary, high rigidity, late opening	Low roll, fast response	Enthusiasts, tuning
Heavy-load stack	Multi-layer reinforced, anti-deformation	High rigidity, impact resistant	Commercial & off-road

Vehicle-Matched Recommendations

Vehicle Category	Recommended Stack	Adaptation Reason
Family cars	Comfort spring-steel stacks	Light weight, comfort-oriented
SUVs	Balanced stainless/spring-steel stacks	Heavier weight, complex roads
Electric vehicles	Lightweight balanced stacks	Heavy battery, sensitive chassis, high center of gravity
Commercial vehicles	Heavy-load reinforced stacks	High load, heavy impact
Modified / racing cars	Handling stacks with high-response alloy layers	Extreme handling, fast response
Engineering machinery	High-temperature heavy-load stacks	Harsh duty, high temp & impact

Wrong Selection Costs More Than the Part

Wrong Choice	Field Result	Correct Stack
Regular spring steel in coastal areas	Rust jamming within a year	Stainless layers + anti-rust treatment
Fuel-car shims on EVs	Stiff chassis, poor filtering	EV lightweight balanced stack
Thin family shims under heavy load	Shock collapse, no support	Heavy-load reinforced multi-layer stack
Blindly thick shims for "sport"	More bumps, not better handling	Custom handling stack matched to vehicle weight

FAQ

Q: Can you build a stack to our damping curve, not just a catalog one?

A: Yes — layer count, thickness mix and materials are all customizable. Send the target damping curve or the vehicle weight and shock geometry, and we design the stack to hit it.

Q: We modified our car but got harsher, not better. Why?

A: That's the signature of blindly thick shims — damping overshot. A handling stack opens late but progressively; we match it to vehicle weight so you gain support without losing compliance.

Q: How fast can we get trial stacks for testing?

A: Stack combinations are assembled from existing validated layers, so trial samples ship quickly for your valve bench and road verification before mass production.

Send your damping curve — get a custom multi-layer stack proposal

Ningbo XiaYi Electromechanical Tech Co., Ltd. designs customizable shim stacks from validated layers for every vehicle class. Tell us the vehicle and the feel you want; we return a stack drawing and samples.

About XIAYI stack engineering: every layer type in the tables above is a validated building block, road-tested per category — from family cars to excavators — so a custom stack is assembled from proven pieces, not experiments.

Related Category

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Contact Info

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Address

No.209 Lane 520 Tongning Rd,Qianjiang Street,Jiangbei District, Ningbo City, Zhejiang Province, China
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Tel

+86-13586885132
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Email

sales@xiayiparts.com

Get a Tailored Quote for Your Shock Absorber Parts

Why Global Buyers Choose Ningbo Xiayi:
✓ IATF 16949 Certified — Defect rate strictly controlled below 0.1%.
✓ Full-Category Supply — Pistons, rods, springs, stampings & rubber parts.
✓ R&D Support — Custom powder metallurgy formulas & 7-10 day rapid prototyping.
✓ Proven Capacity — 50 million core pistons produced annually for global OEMs.

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