D.I.D 520ERV7 X-Ring Chain 520 Gold Open with Rivet Link – 100 to 130 Links

Built to the exacting standards demanded by professional racing series worldwide, the D.I.D 520ERV7 X-Ring chain represents the pinnacle of drivetrain engineering. Constructed from premium-grade alloys with precision-manufactured X-ring seals, it delivers race-proven durability and exceptional power transfer for both track and road use — available in gold finish from 100 to 130 links in steps of two.

Key Features

• X-ring seal technology dramatically reduces friction and internal wear compared to conventional O-ring chains, preserving both performance and longevity.
• Premium alloy construction offers an outstanding strength-to-weight ratio, making it a favoured choice in professional racing series across the globe.
• 520 pitch is optimally suited to high-performance road and race motorcycles, enabling conversion from heavier 525 or 530 setups for a meaningful weight saving.
• Open chain supplied with rivet link, allowing precise sizing and professional installation without compromise.
• Gold finish is machined and treated to resist corrosion and maintain appearance under demanding conditions.
• Available in sixteen length options from 100 to 130 links, ensuring compatibility across a wide range of sportsbike platforms and gearing configurations.

Build Quality and Materials

What sets the 520ERV7 apart from lesser chains is the depth of engineering invested in every component. The inner and outer plates are stamped from high-tensile alloy steel, shot-peened for fatigue resistance and finished with exceptional dimensional consistency. The X-ring profile creates four contact points rather than two, halving the surface area exposed to friction while retaining superior lubricant film between the pin and bushing. The result is a chain that runs cooler, lasts longer and loses less power to internal losses than a standard O-ring alternative.

The rivet connecting link supplied with this open chain is designed for permanent, secure assembly. A correctly riveted D.I.D master link achieves full plate strength, making it the only acceptable closing method for a performance chain of this calibre — particularly on track applications where shock loads are severe.

Performance on Road and Track

The 520ERV7 is the chain of choice for riders who demand precision from every component. On track, it handles the violent acceleration and deceleration cycles of superbike and supersport machines without stretching prematurely or shedding lubrication. On the road, the X-ring seals retain grease effectively between service intervals, reducing maintenance frequency and keeping the drivetrain running quietly. Whether you are chasing lap times on a Ducati V4 R, committing to a fast road season on a Yamaha R1, or building a bespoke track-day machine, the 520ERV7 delivers consistent, measurable performance gains over budget alternatives.

Fitment and Compatibility

The D.I.D 520ERV7 is a universal 520-pitch chain compatible with any sprocket set running 520 gearing. It is widely used on the following platforms, 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, Panigale V2, V4, V4 S, V4 R
• 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, Brutale
• Suzuki: GSX-R 600, GSX-R 750, GSX-R 1000
• Triumph: Daytona 675, Daytona 675 R, Daytona 765, Daytona 765 Moto2, Street Triple 765 R, Street Triple 765 RS
• Yamaha: R3, R6, R7, R9, R1, R1M
• Bimota: KB998 Rimini
• CFMOTO, QJMotor, and other 520-pitch applications

Always verify your current chain pitch and sprocket compatibility before ordering. Select the correct link count for your specific gearing setup and swingarm position.

Specifications

• Brand: D.I.D
• Model: 520ERV7
• Chain type: X-Ring
• Pitch: 520
• Finish: gold
• Connection type: open chain with rivet link
• Available lengths: 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130 links