{"product_id":"morev-4-pin-dc-dip-switch-cdi-box-with-adjustable-rev-limiter-for-50-125cc-atv-pit-bike","title":"MOREV 4-Pin DC DIP Switch CDI Box with Adjustable Rev Limiter for 50–125cc ATV \u0026 Pit Bike","description":"\n\u003cp\u003e\u003cstrong\u003eSelectable ignition rev-limit control for compatible 4-pin DC systems.\u003c\/strong\u003e The MOREV 4-Pin DC DIP Switch CDI Box is designed for selected 50cc–125cc four-stroke horizontal engines using a compatible \u003cstrong\u003eCD110-style 4-pin DC CDI\u003c\/strong\u003e. Its four-position DIP switch bank lets you select an electronic rev-limiter preset or a mode without the CDI's preset electronic rev restriction. Built for compatible ATV, pit bike, dirt bike and go-kart ignition systems; not for AC CDI systems.\u003c\/p\u003e\n\u003ch2\u003eChoose Rev-Limiter or No Preset Rev-Limit Mode\u003c\/h2\u003e\n\u003cp\u003eThis adjustable DC CDI has \u003cstrong\u003efour individual DIP switches\u003c\/strong\u003e. \u003cstrong\u003eSwitches 1–3\u003c\/strong\u003e select among eight preset limiter configurations according to the printed chart on the CDI housing. \u003cstrong\u003eSwitch 4\u003c\/strong\u003e selects the operating mode: the chart identifies the upper position as speed-limit mode; use the corresponding alternate position for no preset rev-limit mode. The selected preset controls the CDI's ignition-based rev limiting behavior. Follow the physical switch chart supplied with the product, since switch position combinations must match the intended setting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNo preset rev limit\u003c\/strong\u003e means the module's selectable limiter setting is not active. It does \u003cstrong\u003enot\u003c\/strong\u003e override mechanical engine limits, make an engine safe at unlimited speed or guarantee greater top speed. Real-world behavior depends on the engine, load, ignition coil, pickup and supporting electrical components.\u003c\/p\u003e\n\u003ch2\u003eHow to Configure the Four DIP Switches\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSwitch off the ignition and engine, and access the switch bank safely.\u003c\/li\u003e\n\u003cli\u003eCheck the printed MOREV DIP setting chart on the CDI housing.\u003c\/li\u003e\n\u003cli\u003eSet switches \u003cstrong\u003e1, 2 and 3\u003c\/strong\u003e to the desired preset combination.\u003c\/li\u003e\n\u003cli\u003eSet \u003cstrong\u003eswitch 4\u003c\/strong\u003e to choose either limited or no preset rev-limit mode.\u003c\/li\u003e\n\u003cli\u003eDouble-check the switch positions, restore the installation and test the vehicle only in a safe controlled setting.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThis product is a \u003cstrong\u003eDIP-switch adjustable rev-limiter CDI\u003c\/strong\u003e, not the MOREV digital 9-curve timing CDI. DIP limiter presets should not be described as nine selectable ignition advance curves.\u003c\/p\u003e\n\u003ch2\u003eCompatible Engines and Vehicles\u003c\/h2\u003e\n\u003cp\u003eDesigned for selected \u003cstrong\u003e50cc, 70cc, 90cc, 110cc and 125cc four-stroke horizontal engines\u003c\/strong\u003e equipped with a matching \u003cstrong\u003e4-pin DC CDI ignition system\u003c\/strong\u003e, often associated with CD110-style applications. Possible vehicle categories include ATVs, dirt bikes, pit bikes and go-karts. Some TaoTao, Roketa, SunL and Coolster models use related layouts, but \u003cstrong\u003ebrand, displacement and matching plug shape alone do not establish fitment\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBefore ordering:\u003c\/strong\u003e confirm that your original CDI uses battery-fed DC ignition, a 4-pin connector with the same locking tab direction, and identical wiring positions. A 4-pin DC CDI is not interchangeable with a 5-pin AC or 6-pin AC\/DC CDI, even if the vehicle's engine size is similar.\u003c\/p\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e MOREV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e MCDI020\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Adjustable DIP-switch CDI ignition box with rev-limiter modes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition power:\u003c\/strong\u003e DC CDI, battery +12V supply\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e 4-pin, CD110-style application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIP settings:\u003c\/strong\u003e Switches 1–3 for eight presets; switch 4 for operating-mode selection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing:\u003c\/strong\u003e Updated purple casing with visible internal electronics and red switch bank\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximate external dimensions:\u003c\/strong\u003e 50 mm wide × 75 mm long × 52 mm deep including connector as shown in the supplied image; measurements may vary slightly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e4-Pin DC Wiring and Safety\u003c\/h2\u003e\n\u003cp\u003eThe supplied \u003cstrong\u003eterminal-side view\u003c\/strong\u003e shows the connector with the locking tab at the top: terminal \u003cstrong\u003e1\u003c\/strong\u003e = pickup\/trigger signal; terminal \u003cstrong\u003e2\u003c\/strong\u003e = ignition coil output; terminal \u003cstrong\u003e3\u003c\/strong\u003e = ground; and terminal \u003cstrong\u003e4\u003c\/strong\u003e = battery +12V DC input. This pin reference is intended for the MOREV 4-pin DC product only; confirm the actual harness orientation and wire connections before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e This CDI requires a compatible DC ignition supply. Do not connect an AC stator exciter supply or connect incompatible AC and DC circuits together. Incorrect wiring can cause ignition malfunction, a no-start condition or electrical damage. Disconnect power before installing the unit, and consult a qualified technician if you are unsure of compatibility.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eDoes the CDI offer a selectable rev limiter?\u003c\/h3\u003e\u003cp\u003eYes. Switches 1–3 select among eight predefined limiter configurations, and switch 4 selects limited mode or no preset rev-limit mode based on the unit's printed chart.\u003c\/p\u003e\n\u003ch3\u003eIs this an AC or DC CDI?\u003c\/h3\u003e\u003cp\u003eIt is a \u003cstrong\u003e4-pin DC CDI\u003c\/strong\u003e. It is not intended for 5-pin AC, GY6 6-pin, or CG 6-pin ignition systems.\u003c\/p\u003e\n\u003ch3\u003eDoes no preset rev-limit mode mean unlimited engine speed?\u003c\/h3\u003e\u003cp\u003eNo. It removes this CDI's DIP-programmed electronic rev-limit selection; safe engine operating limits still apply.\u003c\/p\u003e\n\u003ch3\u003eWill it fit every 110cc pit bike?\u003c\/h3\u003e\u003cp\u003eNo. Compare the complete electrical system, 4-pin connector shape, locking position and pin assignments with your original CDI before purchasing.\u003c\/p\u003e\n\u003ch2\u003eShipping and Support\u003c\/h2\u003e\n\u003cp\u003eMOREV ships from Guangzhou, China. Available delivery destinations, shipping methods and charges are calculated at checkout. If you need help selecting the correct CDI type, \u003ca href=\"\/pages\/contact\"\u003econtact MOREV\u003c\/a\u003e with photographs of your original module and connector.\u003c\/p\u003e","brand":"MOREV","offers":[{"title":"Default Title","offer_id":67942280855787,"sku":"MCDI020","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0859\/8283\/9019\/files\/morev-dip-4pin-dc-main.jpg?v=1791623262","url":"https:\/\/shop.morevracing.com\/products\/morev-4-pin-dc-dip-switch-cdi-box-with-adjustable-rev-limiter-for-50-125cc-atv-pit-bike","provider":"MOREV Racing","version":"1.0","type":"link"}