RK ZXW Series is a light, reinforced chain with adequate strength. 

Features RX-Ring that have “X” shaped seals and improved metallurgy giving you 2 times longer wearlife than standard O-Ring chains.

Pre-stressed and pre-stretched for superior performance and minimize elongation during the life of the chain.

Chain Size 525
Seal type XW-RING
Tensile Strength 4750 Kg
Wear Resistance 1000 (100-1000)
Part Type Chain

(12-55Z-120BL)

SKU 12-55Z-120BL
Brand RK

RK 525 ZXW black chain

By: on 1 July 2026
Already have this chain on my MT10 and has 35000 k's on it. No tight spots unlike other brands I've had and because it's coated it doesn't trust. Don't know when it will wear out . Still going strong. Just bought a new one because it was on sale. The only adjustment it's had since it's initial run in is when I change tyres. Lube it every 500 ks or so along the ends of the rollers with 85W130 synthetic diff oil . Buy a top end RK chain and with minimal maintenance it will last a long time despite all the wheelies.
(5)

Review RK 525ZXW Black

By: on 10 June 2025
Chain has only been on the bike for a short time. Definitely looks the business matching nicely with a new Ceracarbon rear sprocket and the existing BST wheels. Time will tell but I’ve had good mileage on my previous RK chains. RPM Moto a pleasure to deal with.
(5)

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