{"product_id":"prox-520-mx-non-seal-drive-chain-gold-120-link","title":"ProX 520 MX Non-Seal Drive Chain, Gold, 120 Link","description":"\u003cp\u003eThe ProX 520 MX Chain is a non-seal 520 race chain made for ProX by a Japanese OEM factory and built to pair with ProX sprockets. Solid, shot-peened rollers, quad-staked pins and heat-treated plates give it strength and wear resistance, while lightening holes in the inner plates save about 3% in weight. This gold version comes in 120 links with a clip-type master link.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal 520 - 120 Link\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYour chain carries every bit of motor torque to the rear wheel, and a stretched, kinked or rusty chain wastes power, slaps the swingarm and wears out your sprockets. A non-seal MX chain has no O-rings between the plates, so it turns with less internal friction than a sealed chain, which is why it is the race choice where efficiency matters most.\u003c\/p\u003e\n\u003cp\u003eProX gives the pins a hardened outer layer over a softer core to add strength and reduce wear, then heavy press-fits and quad-stakes them. The bushings and rollers are solid, the rollers are shot-peened, and the bushings, rollers and plates are heat-treated for high tensile strength, low friction and wear resistance. Every chain is pre-stressed and pre-stretched to reduce initial stretch, so it holds its adjustment after install.\u003c\/p\u003e\n\u003cp\u003eNon-seal chains reward regular cleaning and lube. Cut the chain to length for your gearing, and if your sprockets are hooked or worn, replace them at the same time: a new chain on worn sprockets wears out fast.\u003c\/p\u003e","brand":"ProX","offers":[{"title":"Default Title","offer_id":67635188826341,"sku":"07.RC520120CG","price":104.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/3964\/1496\/files\/prox-520-mx-non-seal-drive-chain-gold-120-link-1.png?v=1791493044","url":"https:\/\/gritshift.com\/fr\/products\/prox-520-mx-non-seal-drive-chain-gold-120-link","provider":"GritShift","version":"1.0","type":"link"}