Full Motorcycle Chain Series — In Stock, Ready to Ship
Multiple series are available to cover a variety of riding conditions. All sizes conform to JIS B 1801 standards. Please select the appropriate series based on your pitch, sealing requirements, and engine output power.
Why Choose Korea Ever-Power
From metallurgy to dispatch — here is what sets our supply chain apart from standard market alternatives.
Complete Range Under One Roof
From the 420 at 0.57 kg/m to the 530-SX at 43.0 kN — every pitch, seal type, and bush construction available. No need to split sourcing across multiple suppliers. The drive chain for motorcycle applications you need, all from one production source.
Carburized Alloy Steel Pins
Pins undergo gas carburizing at tightly controlled temperatures, producing a hard outer layer over a ductile core. This directly resists the pin-bushing wear that causes chain elongation — the primary reason a chain gets replaced. Heat-treated plates resist fatigue under cyclic load.
100% Batch Tensile Testing
Every production batch is tensile-tested to verify break-load against published figures before dispatch. Dimensional verification against JIS B 1801 reference gauges and articulation inspection for stiff links are also standard. Test records are traceable to batch reference numbers.
3–7 Day Dispatch from Stock
High-demand sizes — 428, 428H, 520, 520H-O, 525H, 530H, and their sealed variants — are physically in warehouse stock. No production lead time for standard orders. Custom link counts are cut on request with confirmed lead times.
Direct Factory Pricing
Orders go from production to your workshop without intermediate distributor margins. Both individual retail and wholesale workshop accounts are supported. No minimum order quantity — you order what you need, at factory-direct pricing regardless of volume.
Korea & Asia-Pacific Specialists
Local market understanding, Korean-language support, and logistics experience built around the region's specific requirements. Serving individual riders, workshop buyers, and fleet operators — all chain series in stock for quick regional dispatch.
Export-Ready Packaging & Factory Transparency
Every chain ships pre-lubricated in moisture-resistant packaging, individually labelled with series number, link count, and batch reference. Standard export documentation — commercial invoice, packing list, and certificate of origin — is included with all international shipments.
Want to see our facility before you order? Our production floor is available for a full virtual walkthrough. Inspect the assembly lines, quality inspection area, and warehouse directly from your browser.
🏭 Take a Virtual Factory TourRepresentative Specifications — Across All Series
Pitch is the single most critical dimension — it must match both front and rear sprockets exactly. The inner width and roller diameter determine which sprocket the chain is compatible with within a given pitch family. Below is a cross-section of our range, from entry-level to the highest-spec sealed series.
Tensile strength values are tested break loads. Apply an appropriate safety factor based on engine output and riding conditions when selecting.
| Chain No. | Pitch (mm) | Inner Width (mm) | Roller Dia (mm) | Tensile Str. (kN) | Weight (kg/m) | Seal Type |
|---|---|---|---|---|---|---|
| 420 | 12.700 | 6.35 | 7.77 | 15.6 | 0.57 | None |
| 428H | 12.700 | 7.85 | 8.51 | 20.6 | 0.82 | None (H) |
| 428H-O | 12.700 | 7.85 | 8.51 | 23.8 | 1.00 | O-Ring |
| 520H-X | 15.875 | 6.35 | 10.16 | 34.0 | 1.21 | X-Ring |
| 525H-SX | 15.875 | 7.94 | 10.16 | 38.0 | 1.35 | Super X-Ring |
| 530-SX | 15.875 | 9.53 | 10.20 | 43.0 | 1.20 | Super X-Ring |
Complete dimensional data for all 420–530H series — including pin diameter, pin length, plate thickness, and sealed variants — are listed on individual product pages.
Where Our Chains Run
Three rider profiles, three distinct sets of requirements — each matched to a chain specification built around the actual load, environment, and maintenance reality involved.
🛵 Street & Daily Commuters
Scooters, delivery fleets, and 125–250cc street bikes accumulate mileage through sheer daily volume rather than shock loading. A standard 420 or 428 motorcycle drive chain handles this role efficiently — at 15.6–17.8 kN, both carry a comfortable safety factor over the working loads of small-displacement engines.
Fleet operators benefit from consistent batch dimensional quality across repeat orders — every machine in a delivery fleet maintains identical chain behaviour, simplifying scheduled maintenance intervals. A 428 chain cleaned and lubricated every 500 km on paved roads delivers reliable service at the lowest cost per kilometre in the class.
🏁 Off-Road & Motocross
Off-road riding combines shock loads from jump landings and hard acceleration on loose terrain with continuous mud and water exposure. Standard non-sealed chains lose lubricant at the pin-bushing joint within a single riding session under these conditions — a problem that sealed chains solve by design.
Our 520MX and motocross series use solid-bore bushings that maintain cylindrical geometry under repeated impact loads — a curled bushing gradually deforms at the seam under sustained shock loading, accelerating pin wear. For enduro and trail use where lubrication intervals are realistically extended, O-ring or X-ring sealed chains in the 428 or 520 pitch retain internal grease regardless of submersion.
🏖️ High-Performance & Touring
Large-displacement touring machines and cruisers require the wider roller contact of a 530-series motorcycle chain and sprocket combination to distribute torque across the sprocket tooth face at sustained highway speed under load. A 530-SX at 43.0 kN provides the highest tensile strength in the standard roller chain range.
The triple-lip Super X-ring seal extends lubrication intervals to 1,000–1,500 km — practical for riders covering 15,000+ km per year who prefer to minimise service stops. For sport tourers where rotating mass matters, the 520H-X at 34.0 kN with 1.21 kg/m gives the best strength-to-weight ratio in the sealed 520 family.
Korea Ever-Power vs. Standard Market Distribution — What Changes When You Buy Direct
| Comparison Point | Chains via Multi-Tier Distribution | Korea Ever-Power Direct |
|---|---|---|
| Price structure | Factory → importer → distributor → retailer markups | Direct factory pricing, no intermediate layers |
| Lead time for stocked sizes | Subject to distributor inventory cycle | 3–7 business days from warehouse |
| Minimum order quantity | Often 10–50+ units per SKU | No enforced minimum — single units accepted |
| Technical support | Via retailer or distributor, varies widely | Direct access to engineering team |
| Custom specifications | Rarely available at retail level | Available — custom link counts and OEM spec |
| Quality documentation | Typically not available to end buyer | Batch test certificates available on request |
| Mixed-size ordering | Possible but often at premium freight | Standard — consolidated single shipment |
Korea Ever-Power Motorcycle Chain Co., Ltd.
Our manufacturing network operates five production facilities with a combined floor area exceeding 110,000 m². Motorcycle chain production is a dedicated discipline here — not a side category. We hold over 180 registered patents in chain engineering and maintain a catalogue covering more than 2,000 chain varieties across 8,000+ specifications, exported to over 80 countries.
Quality management operates under ISO 9001 certification. For motorcycle drive chains specifically, our controls include: incoming steel certification, carburizing temperature recording per batch, tensile testing, dimensional verification against JIS B 1801 reference gauges, and articulation inspection on finished chains before packaging.
This is a direct manufacturing operation — not a reseller. Buyers receive factory-sourced chains with traceable batch quality documentation, direct technical support from engineers, and flexible order sizes that suit both individual workshops and wholesale accounts.
Production Facilities & Quality Control
Frequently Asked Questions
Procurement-focused questions from buyers across Korea and the Asia-Pacific region.
What is the difference between O-ring, X-ring, and Super X-ring chains?＋
How often should a motorcycle chain be lubricated?＋
When should I replace a motorcycle chain instead of just adjusting the slack?＋
Do I need to replace sprockets when I replace the chain?＋
What is the minimum order quantity for motorcycle chains?＋
Can I order chains in mixed sizes in one shipment?＋
Are your chains compatible with Japanese and Korean OEM sprockets?＋
Have a question not listed here? Our team responds to technical and commercial enquiries within 24 business hours.
Send an Enquiry →Complete Drive System — Chains & Sprockets
A drivetrain is only as reliable as its weakest component. Beyond motorcycle chains, we supply the full range of transmission chains and matched sprockets for every application in the system.
Standard & Heavy-Duty Roller Chains
Industrial roller chains in ANSI and ISO/DIN standards — 25, 35, 40, 50, 60, 80 series and beyond. Used in engine primary drives, cam drives, transmission systems, and general mechanical power transmission. All materials and heat-treatment specifications matched to the motorcycle chain production standard.
Motorcycle Sprockets — Front & Rear
Compatible chain sprockets for motorcycle applications — front (countershaft) and rear wheel sprockets in all standard pitches: 420, 428, 520, 525, 530. Steel and alloy variants. Tooth counts matched to OEM specifications or customized for performance ratio changes. Order motorcycle chain and sprocket sets together for optimal compatibility and the longest combined service life.
Silent Chains — Engine Timing & Cam Drive
Engine-internal silent chains for camshaft synchronisation and primary drives — CL04 and related series. Inverted-tooth link plates provide quieter operation than roller chains at high engine speeds. Lubricated by the engine oil system; no external maintenance required. Available in the 6.35 mm and 9.525 mm pitch families used in single-cylinder and parallel-twin motorcycle engines.
Replace chain and motorcycle chain and sprockets together as a matched set — worn sprocket profiles significantly accelerate new chain wear. Ordering from a single source guarantees dimensional compatibility and simplifies the service process.
View Sprocket Range →
