{"product_id":"ct125-420set","title":"NK Racing CT125 428 to 420 conversion set (RK gold seal chain \u0026 FR sprocket) ","description":"\u003cp\u003e428 to 420 conversion set\u003cbr\u003eThe 428 size is over spec with an engine capacity of 125cc.\u003cbr data-mce-fragment=\"1\"\u003eSuper Cub C125, GROM, Wave125, etc., which have the same engine as CT125 but have even higher output, are 420 size.\u003c\/p\u003e\n\u003cp\u003eThe effect of downsizing from 428 to 420 chain is smoother acceleration and deceleration due to lighter weight. The acceleration will be better and the brakes will also be more effective. Fuel efficiency also improves because resistance is reduced. Of course, the maximum speed increases, and the use of a sealed chain lengthens the maintenance cycle, and the adjustment span is longer with the sealed type 420 than with the non-sealed 428.\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cp\u003eSet the sprocket, front and rear, together.\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eseal chain gold\u003c\/span\u003eRK 420 KLO -120 (clip type)\u003cbr\u003eSince the number of chain links is 120, CUT is required.\u003cbr\u003e(The number of chain links in CT125 is 108)\u003cbr\u003e\u003cbr data-mce-fragment=\"1\"\u003eSprocket 420-14 OSAKI\u003cbr data-mce-fragment=\"1\"\u003eSprocket 420-39\u003cbr\u003e\u003cbr\u003ehe 428 size is over spec for 125cc engine capacity.\u003cbr data-mce-fragment=\"1\"\u003eThe Super Cub C125, GROM, Wave125, etc., which have the same engine as the CT125 but even higher output, are 420 size.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe effect of downsizing from a 428 to a 420 chain is smoother acceleration and deceleration due to weight reduction. Acceleration is better and braking is more effective. Fuel consumption is also improved due to reduced drag. Of course, the maximum speed is also increased, and the maintenance cycle is lengthened by using a sealed chain.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eSprockets, front and rear, are set to match.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eSeal chain gold RK 420 KLO -120 (clip type)\u003cbr data-mce-fragment=\"1\"\u003eCUT is necessary because the number of chain links is 120.\u003cbr data-mce-fragment=\"1\"\u003e(CT125 has 108 chain links)\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eSprocket 420-14 SCORPION\u003cbr data-mce-fragment=\"1\"\u003eSprocket 420-39\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e","brand":"8ft Weekend","offers":[{"title":"Default Title","offer_id":41996955287712,"sku":null,"price":23300.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0569\/9393\/9616\/files\/e9f5a792ebbfef7bc348a8c636298238_6bc3bb8c-d1ce-458c-ae09-2ef30ab90305.png?v=1722564638","url":"https:\/\/8ftweekend.com\/en\/products\/nk-racing-ct125-428-to-420-conversion-set-rk-gold-seal-chain-fr-sprocket","provider":"8ft Weekend","version":"1.0","type":"link"}