钧 Ningbo JunshiALUMINUM SHOCK ABSORBER COMPONENTS
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Manufacturer of Aluminum Outer Tubes, Inner Tubes & Piston Rods

Since 2008, Ningbo Junshi has specialized in aluminum parts for motorcycle shock absorbers — outer tubes, inner tubes and piston rods — a trusted link in the global damper supply chain.

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2008Established
90+Employees
10+Engineers
4Core Processes
BY THE NUMBERS

A Reliable Aluminum Parts Supplier

In-house processes and a disciplined quality system keep our supply stable and consistent.

2008FoundedESTABLISHED
90+EmployeesEMPLOYEES
10+EngineersENGINEERS
4Core ProcessesCORE PROCESSES
WHAT WE MAKE

Our Products

We focus on aluminum tubular components for shock absorbers — built to your drawings or samples.

Aluminum Outer Tube
ALUMINUM OUTER TUBE

Aluminum Outer Tube

The damper's main load-bearing member, with deep-hole bored and honed bores.

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Aluminum Inner Tube
ALUMINUM INNER TUBE

Aluminum Inner Tube

Core front-suspension moving part — high straightness and wear resistance.

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Aluminum Piston Rod
ALUMINUM PISTON ROD

Aluminum Piston Rod

Mirror-grade roundness with stable, low-friction performance.

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WHY JUNSHI

Why Choose Junshi

Four reasons global damper makers keep us as a long-term supplier.

01

Tube Expertise

Deep know-how in aluminum tubing — deep-hole boring, internal honing and precision outer grinding under one roof.

02

In-house Processes

Gravity casting, die casting, CNC machining and surface treatment integrated for tight control and fast turnaround.

03

Quality System

IATF 16949-based management with full-process control on critical dimensions.

04

Stable Supply

Main supplier to leading damper brands — consistent quality and reliable volume delivery.

CAPABILITIES

Manufacturing Capabilities

From raw blank to finished part, fully controlled in-house.

①

Gravity & Die Casting

Dense, reliable blanks for complex and high-volume parts.

②

Deep-hole Boring & Honing

Tight control of bore roughness, tolerance and concentricity.

③

Precision Machining

Turning / milling / grinding with high repeatability.

④

Surface Treatment

Anodizing & hard anodizing; CASS 16h rated level 9+.

INSIDE OUR PLANT

Real Factory, Real Capacity

Machining workshop
CNC machining workshop.
CNC turning of aluminum tube
CNC turning of aluminum tubes.
Semi-finished aluminum tubes in staging area
Semi-finished goods staging area.
Aluminum tube stock yard
Aluminum tube stock yard.
Sample showroom
Sample showroom.
Reception area
Reception area.
Aluminum tubes and piston rod samples on display
Sample display — outer tubes, inner tubes and piston rods.
Anodized aluminum parts and castings in showroom
Anodized parts and cast aluminum components.
Threaded aluminum tubes and fittings in showroom
Threaded tubes, fittings and eyelets.

Ready to start a project?

Send us your drawing or sample — we'll quote and prototype fast.

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