EK Chain 525 Z/3D QX2-Ring Chain Gold/Gold Open with Rivet Link – 110 to 120 Links

Built from the ground up for high-performance road motorcycles, the EK 525 Z/3D QX2-Ring chain in Gold/Gold combines a precision three-dimensional Z-series construction with advanced QX2-Ring sealing technology to deliver a tensile strength of 44.5 kN (10,003 lbs) — placing it firmly among the strongest 525-pitch chains available for supersport and naked bikes.

Key Features

• QX2-Ring seal technology drastically reduces internal friction, retains lubrication longer and achieves a relative service life rating of 3600 per 100 links
• 44.5 kN / 10,003 lbs tensile strength handles the sustained torque and acceleration demands of the most powerful production road bikes
• ThreeD Z-series (Z/3D) construction distributes load evenly across every link, maintaining dimensional stability under repeated high-stress cycles
• Gold/Gold finish provides a corrosion-resistant outer coating alongside a premium aesthetic that complements performance machinery
• Supplied open with a rivet link for the most secure, permanent connection — the preferred choice for high-output engines
• Available in 110 or 120 links to suit a range of swingarm lengths and sprocket combinations

Construction and Material Quality

The Z/3D designation reflects EK Chain's proprietary ThreeD manufacturing process, in which side plates are precision-formed to create a three-dimensional profile that spreads tensile and lateral loads far more effectively than conventional flat-plate chains. The result is a chain that maintains its geometry mile after mile, reducing both elongation and the wear rate on sprocket teeth.

At the heart of each link, the QX2-Ring seal keeps factory-applied grease locked inside the pin-and-bushing interface while blocking road contaminants from entering. Compared with a standard O-ring chain, the QX2 profile achieves a lower contact area and therefore less drag — a meaningful advantage on a bike where drivetrain efficiency directly influences throttle response.

The Gold/Gold Finish

The full Gold/Gold treatment is not purely cosmetic. The outer coating adds a layer of corrosion resistance that is particularly valuable on a chain exposed to road salt, rain and the heat cycles generated by a high-performance drivetrain. On a premium build — matching gold sprockets or a complementary wheel finish — the result is cohesive and purposeful rather than showy.

Rivet Link Connection

This chain is supplied open, ready to be cut to the precise link count you select (110 or 120 links), and closed with the included rivet link. A riveted connection is mechanically superior to a clip-type master link at elevated power levels: once peened, it cannot be displaced by vibration or lateral flex, making it the correct choice for any motorcycle producing serious torque.

Fitment and Compatibility

The 525 pitch and 110–120 link count covers an exceptionally broad range of performance road motorcycles. Confirmed compatible applications include, among others:

• Aprilia RSV4, RSV4 R, RSV4 RR, RSV4 RF, RSV4 1100, RSV4 1100 Factory, RS 660, RS 457, Tuono V4, V4 R, V4 S
• BMW S1000RR, M1000RR, HP4, HP4R
• Ducati 848, 899, 959, 1199, 1199 S, 1199 R, 1299, 1299 S
• Honda CBR 600 RR, CBR 1000 RR, CBR 1000 RR-R
• Kawasaki ZX-6R, ZX-10 R, ZX-10 RR, ZX-4 RR, Ninja 400
• KTM RC 390, RC8 1190, 990 RC R
• MV Agusta F3, F4, 675 SR-R, 990 RC R
• 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
• Bimota KB998 Rimini; CFMoto, QJMotor, and other 525-pitch applications

Always verify the correct link count and sprocket pairing for your specific model year before ordering.

Specifications