D.I.D 520ERT3 Gold Non-Sealed Motorcycle Chain, 120-Link, Part 520ERT3120RB

The non-sealed 520ERT3 is our #1 selling motocross chain and is used by factory race teams such as Monster Energy Kawasaki, Star Racing Yamaha, Honda HRC, Red Bull KTM, Factory HEP Suzuki and more!

Because of its strength/weight ratio, this is the go-to chain for riders across a multitude of racing disciplines, especially among the 250 class. 

Max CC:450cc

Tensile Strength:8,300 lbs

Weight (100L):2.99 lbs

Non-Sealed

Chain Life Index:410

Pin Length: 0.693"

Pin Diameter:0.21"

Inner Plate Thickness:2

Outer Plate Thickness:2

The D.I.D 520ERT3 Gold Non-Sealed Motorcycle Chain is designed for riders and race teams seeking a lightweight, responsive chain for demanding motorcycle applications. Built in the popular 520 chain size, this non-sealed design reduces rotating mass and helps deliver direct power transfer from the engine to the rear wheel. The gold finish adds a distinctive appearance while providing a professional look suitable for performance-focused builds and replacement applications.
The 520ERT3 chain is supplied in a 120-link configuration with a rivet-style connection identified by the RB designation. Its non-sealed construction is intended for applications where low friction, efficient power delivery, and frequent maintenance are priorities. Without sealed rings, the chain allows for straightforward cleaning, lubrication, inspection, and adjustment, making it a practical choice for riders who regularly service their motorcycles or replace chains as part of a race-preparation routine.
Use the D.I.D 520ERT3 Gold chain as a replacement for compatible motorcycle drivetrains that specify a 520 non-sealed chain. Always confirm the required chain size, link count, sprocket compatibility, and master-link installation method before installation. Proper alignment, tension, lubrication, and regular inspection are essential for maximizing chain life and maintaining reliable performance. The D.I.D brand is recognized for motorcycle chain engineering, making this part a suitable option for performance maintenance, track preparation, and off-road applications where drivetrain efficiency is important.

Features:

• Brand: D.I.D motorcycle chain engineered for performance-focused drivetrain applications

• Part Number: 520ERT3120RB

• Chain Size: 520 chain size for compatible motorcycle sprockets and drivetrains

• Chain Type: Non-sealed construction for low-friction operation and simplified service

• Finish: Gold-colored finish for a distinctive, professional appearance

• Configuration: 120-link chain supplied with an RB rivet-style connection designation

• Application: Suitable for compatible performance, track, race-preparation, and off-road motorcycle applications

• Maintenance: Supports regular cleaning, lubrication, inspection, and tension adjustment