{"product_id":"morev-5-pin-ac-dip-switch-cdi-box-with-adjustable-rev-limiter-for-50-125cc-atv-pit-bike","title":"MOREV 5-Pin AC DIP Switch CDI Box with Adjustable Rev Limiter for 50–125cc ATV \u0026 Pit Bike","description":"\n\u003cp\u003e\u003cstrong\u003eTake control of your ignition's selectable speed-limit mode with the MOREV 5-Pin AC DIP Switch CDI.\u003c\/strong\u003e Built for selected 50cc–125cc four-stroke horizontal engines using a matching \u003cstrong\u003e5-pin AC CDI ignition system\u003c\/strong\u003e, this module features a four-position DIP switch bank with a selectable \u003cstrong\u003erev limiter mode and a no preset rev-limit mode\u003c\/strong\u003e. It is designed for compatible pit bikes, dirt bikes, ATVs and go-karts where a technician or rider needs a configurable ignition rev ceiling.\u003c\/p\u003e\n\u003ch2\u003eAdjustable Rev Limiter and No Preset Rev-Limit Mode\u003c\/h2\u003e\n\u003cp\u003eThis CDI uses four small DIP switches under the protected electronics side of the unit. \u003cstrong\u003eSwitches 1–3\u003c\/strong\u003e select one of eight preset configurations according to the setting chart on the module. \u003cstrong\u003eSwitch 4\u003c\/strong\u003e selects between the speed-limited and unlimited-speed modes; the product's printed guide indicates the upper position activates the limited mode. Follow the printed switch-position chart rather than guessing combinations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLimited mode:\u003c\/strong\u003e Choose the applicable preset using switches 1–3 and switch 4's mode position. The CDI then applies its selected electronic ignition rev ceiling. The effective limit can vary with engine condition, ignition components and installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNo preset rev-limit mode:\u003c\/strong\u003e Switch 4 selects the mode without the DIP-programmed speed restriction. This does \u003cem\u003enot\u003c\/em\u003e mean an engine can operate safely at unlimited speed. Mechanical limitations and any other vehicle control or safety limits still apply.\u003c\/p\u003e\n\u003ch2\u003eHow to Set the Four DIP Switches\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower off the engine\u003c\/strong\u003e and access the DIP switches safely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefer to the switch chart\u003c\/strong\u003e printed on the CDI housing for the desired preset configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSet switches 1, 2 and 3\u003c\/strong\u003e to the corresponding positions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse switch 4\u003c\/strong\u003e to choose limited or no preset rev-limit mode, following the printed chart.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm all positions\u003c\/strong\u003e before reconnecting or installing the CDI. Test the vehicle safely.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eUnlike the MOREV digital \u003cstrong\u003e9-Curve CDI\u003c\/strong\u003e, this DIP-switch model selects \u003cstrong\u003erev-limiter settings and operating modes\u003c\/strong\u003e; it does not offer nine selectable ignition advance curves.\u003c\/p\u003e\n\u003ch2\u003eEngine Fitment: 5-Pin AC CDI, DY100-Style Applications\u003c\/h2\u003e\n\u003cp\u003eIntended for selected 50cc, 70cc, 90cc, 110cc and 125cc horizontal four-stroke engines with compatible \u003cstrong\u003e5-pin AC CDI\u003c\/strong\u003e wiring. Potential vehicle examples in the MOREV fitment reference include certain Coolster 3125B, 3125R and 3125XR8 applications, and selected TaoTao, SSR, X15\/X18-style pit bikes, dirt bikes, ATVs and go-karts. These are \u003cstrong\u003econditional examples, not a guarantee of fitment\u003c\/strong\u003e for every trim or year.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCheck before buying:\u003c\/strong\u003e the original CDI must be an AC-powered five-pin model with a matching connector housing, pin count, latch orientation and wiring assignments. DY100-style and CD110-style wiring are not interchangeable; a visually similar connector does not establish electrical compatibility.\u003c\/p\u003e\n\u003ch2\u003eElectrical Configuration and Dimensions\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e MOREV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e DIP-switch adjustable CDI ignition module with rev-limiter control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition supply:\u003c\/strong\u003e AC CDI (stator\/exciter supplied), not DC battery-fed CDI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e 5-pin, DY100-style application; verify the terminal layout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e 4-position DIP switch bank; switches 1–3 select presets, switch 4 selects mode\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModes:\u003c\/strong\u003e Selectable limited mode or no preset rev-limit mode\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Approximately 50 mm × 75 mm × 52 mm as illustrated; manual measurements may vary\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e5-Pin AC CDI Wiring Reference\u003c\/h2\u003e\n\u003cp\u003eThe supplied MOREV \u003cstrong\u003eterminal-side\u003c\/strong\u003e reference shows the connector with the lock tab at the top: position \u003cstrong\u003e1\u003c\/strong\u003e = pickup\/trigger signal; \u003cstrong\u003e2\u003c\/strong\u003e = ignition coil output; \u003cstrong\u003e3\u003c\/strong\u003e = ground; \u003cstrong\u003e4\u003c\/strong\u003e = kill switch\/engine stop; \u003cstrong\u003e5\u003c\/strong\u003e = stator exciter coil supply. \u003cstrong\u003eVerify each connection against the actual vehicle harness and the included product reference before installation.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarning:\u003c\/strong\u003e For AC ignition systems only. Never power this AC CDI from a DC +12V ignition supply. Incorrect pinout or incompatible power can cause a no-start condition or electrical damage. Disconnect power before installation and consult a qualified technician if the original CDI wiring is uncertain.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eHow many rev-limiter presets does it offer?\u003c\/h3\u003e\n\u003cp\u003eSwitches 1–3 provide eight preset switch combinations in the limiter-selection chart. Switch 4 determines whether limited mode or the no preset rev-limit mode is used. Use the exact settings on your CDI label.\u003c\/p\u003e\n\u003ch3\u003eCan this replace a 4-pin DC CDI?\u003c\/h3\u003e\n\u003cp\u003eNo. This listing is specifically for compatible \u003cstrong\u003e5-pin AC\u003c\/strong\u003e ignition systems. AC and DC CDIs must not be interchanged.\u003c\/p\u003e\n\u003ch3\u003eDoes the no-limit mode guarantee higher speed?\u003c\/h3\u003e\n\u003cp\u003eNo. It removes this CDI's selected electronic rev-limit setting; actual engine performance depends on the full motorcycle or ATV system and operating conditions.\u003c\/p\u003e\n\u003ch3\u003eWill it fit all Coolster, TaoTao or SSR engines?\u003c\/h3\u003e\n\u003cp\u003eNo. Compatibility depends on the vehicle's specific engine, CDI supply type, connector and pinout, not the brand or displacement alone.\u003c\/p\u003e\n\u003ch2\u003eShipping and Support\u003c\/h2\u003e\n\u003cp\u003eMOREV orders ship from Guangzhou, China. Shipping options and charges are calculated for your destination at checkout. If you are unsure about compatibility, \u003ca href=\"\/pages\/contact\"\u003econtact MOREV\u003c\/a\u003e with clear photos of the old CDI and its connector.\u003c\/p\u003e\n","brand":"MOREV","offers":[{"title":"Default Title","offer_id":67942206046443,"sku":"MCDI019","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0859\/8283\/9019\/files\/morev-dip-5pin-ac-main.jpg?v=1791622992","url":"https:\/\/shop.morevracing.com\/products\/morev-5-pin-ac-dip-switch-cdi-box-with-adjustable-rev-limiter-for-50-125cc-atv-pit-bike","provider":"MOREV Racing","version":"1.0","type":"link"}