The facts.
| Chain pitch | 525 |
|---|---|
| Number of links | 84- 146 (selectable) |
| Weight (kg/100 links) | 2,05 kg |
| Relative service life (per 100 links) | 4000 |
| Seal type | NX-Ring |
| Application | Road & track |
| Colour | Gold/Gold |
| Master link | Rivet link |
| EK chain type | ZVX3 |
| Manufacturer | EK Chain |
DescriptionThe whole story▼
For riders who demand a chain that earns its keep day after day without drama, the EK 525 ZVX3 in Gold/Gold is the upgrade that delivers. Available in 84 to 146 links to suit a wide range of sportsbikes and naked bikes, it arrives open with a rivet link for a secure, permanent connection — ready to slot in, set, and forget.
Key Features
- NX-Ring seal technology keeps internal lubrication locked in and contamination locked out, pushing relative service life to a rated 4000
- Tensile strength of 45.8 kN (10,300 lbs) handles high-torque litre-class engines without drama
- ZVX3 construction delivers exceptional lateral rigidity for smooth, consistent power delivery at any rpm
- Gold/Gold finish adds corrosion resistance alongside a premium aesthetic that holds up in all weathers
- Supplied open with a rivet link — the safest connection method for high-performance applications
- Weighs just 2.05 kg per 100 links, keeping unsprung rotating mass in check
Built for Everyday Miles and Weekend Sport Riding
The EK 525 ZVX3 sits in the premium tier of EK's chain range, but its real strength is how well it suits riders who cover genuine mileage. Whether the bike is a daily commuter with a sportsbike heart or a weekend canyon carver that sees a thrash every Saturday, the ZVX3 resists stretch and wear far better than any standard OEM chain. Reduced maintenance intervals mean less time on the paddock stand and more time riding.
The NX-Ring seal is EK's advanced X-shaped ring design, which creates a tighter seal around the pin and bushing than a conventional O-ring. The result is extended lubrication retention, lower friction, and a measurably longer service life — all without requiring any special tools or setup procedures beyond a standard chain-press rivet tool.
ZVX3 Construction
The ZVX3 designation identifies EK's reinforced inner and outer plate geometry, engineered to resist the lateral flex and micro-vibration that accelerate wear in high-power drivetrains. On the road this translates to a chain that runs quietly, tracks the sprockets cleanly, and maintains its tension settings without constant re-adjustment. At sustained motorway speeds or on a demanding track day it simply does not become the weakest link.
Gold/Gold Finish
The full Gold/Gold colour treatment — gold outer plates, gold inner plates — is not merely cosmetic. The surface treatment provides an additional barrier against road grime, salt, and moisture, helping the chain maintain its condition and appearance across a full riding season. It also makes wear inspection straightforward: discolouration and stretch become immediately visible against the gold background.
Rivet Link Supplied
Unlike clip-link chains that rely on a spring clip for the master link, the ZVX3 is supplied with a rivet link. When correctly pressed, a rivet link matches the tensile strength of the chain itself, making it the correct choice for any machine producing significant power or torque. A chain press tool is required for installation.
Fitment and Compatibility
The 525 pitch and 84–146 link range covers an extensive list of performance motorcycles. Confirmed fitment applications include models from:
- Aprilia: RSV4, RSV4 R, RSV4 RR, RSV4 RF, RSV4 1100, RSV4 1100 Factory, RS 660, RS 457, V4, V4 R, V4 S
- BMW: S1000RR, M1000RR, HP4, HP4R
- Bimota: KB998 Rimini
- CFMOTO, QJMotor: SKR 800 RR, V2 890, V2 S 890, V2 955
- Ducati: 848, 899, 959, 1199, 1199 R, 1199 S, 1299, 1299 S
- Honda: CBR 600 RR, CBR 1000 RR, CBR 1000 RR-R
- Kawasaki: ZX-4 RR, ZX-6R, ZX-10 R, ZX-10 RR, Ninja 400
- KTM: RC 390, RC8 1190, 990 RC R
- MV Agusta: F3, F4, 675 SR-R, 450 SR
- Suzuki: GSX-R 600, GSX-R 750, GSX-R 1000
- Triumph: Daytona 675, Daytona 675 R, Daytona 765, Daytona 765 Moto 2, Street Triple 765 R, Street Triple 765 RS
- Yamaha: R3, R6, R7, R9, R1, R1M
Always verify the correct link count for your specific model year before ordering. Year coverage spans 2003–2026 across the listed models.
Specifications
- Chain pitch: 525
- Number of links: 84–146 (selectable)
- Weight: 2.05 kg per 100 links
- Relative service life (per 100 links): 4000
- Seal type: NX-Ring
- Application: road and track
- Colour: Gold/Gold
- Master link: rivet link
- Chain type: ZVX3
- Manufacturer: EK Chain
What's includedEverything in the box▼
- 1x Chain
FitmentWhich bikes this fits▼
Universal product — Please check whether it fits your bike.
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