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DID 420D Black Chain

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The DID 420D chain is a drop-in upgrade & replacement part for your bike, improving both performance and autonomy.

Precision-built in Japan, it is a perfect fit for our electric bikes: light weight, very low friction and high efficiency to make sure that 100% of the power is transmitted to the wheel.

Shipping and returns

We ship worldwide (batteries are limited to Europe). Products indicated as being in stock are shipped in less than 72 hours after you place the order. Our warehouse is located in France, so transport cost and time may vary depending on the delivery country.

Changing one’s mind is human. That’s why you have up to 30 days after the delivery of your order for a return. Just let us know and we will take care of all the details.


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We offer different payment methods to accommodate your preferences: Credit Cards, PayPal, Wire Transfer & Klarna.

Your order is automatically validated as soon as the payment is confirmed. In case of a return, your refund goes to the payment method used for the order.

Chain Length

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Engineered and manufactured in Japan, the DID 420D is a high quality chain built for light, high powered (up to 85cc petrol engine) bikes. It is a great improvement over the factory installed chain and a perfect fit for standard powered or bikes up to 10kW.

It features a tensile strenght of 1 800kg (3 970lbs) all the while offering an extended lifespan. This chain is a standard, non o-ring chain, allowing for the lowest friction coeficient.

As a matter of fact, o-rings reduce chain maintenance at the detriment of performance, especially on our light electric bikes, as they rob horsepower and precious battery-life.

Technical details

Chain strength 1 800kg (3 970lbs) of tensile strenght
Weight 700 grams for 100 links (1.54lbs)
Chain type Non-sealed chain for improved performance
Assembly Expert-built in Japan by D.I.D technicians
Attach mechanism Comes with a quick connecting link

Compatibility and fitting

Chain length depends on the sprocket size you are using. For Talaria Sting and Sur Ron Light Bee, here are the number of links you need for each sprocket size.

Sprocket size (tooth) Sur Ron chain Talaria chain / MTO Racing Swingarm
42T 104 links 106 links
48T 106 links 108 links
52T 108 links 110 links
54T 110 links 112 links
56T 112 links 114 links
58T 112 links 114 links
60T 114 links 116 links
64T 116 links 118 links

In addition, the chain length for the Sur Ron Primary Chain Kit is 42 links.

Drop-in compatibility on all bikes using 420 chains (Sur Ron Light Bee, Drill One, Talaria Sting…).

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