--- product_id: 706892566 title: "5 Pin AC Racing CDI Box Digital Adjustable 9 Ignition Curves for COOLSTER 125cc 3125B 3125R 3125XR8 SSR Dirt Bike 50c 125cc ATV Quad Go Kart" price: "39734CFA" currency: XOF in_stock: true reviews_count: 4 url: https://www.desertcart.sn/products/706892566-5-pin-ac-racing-cdi-box-digital-adjustable-9-ignition store_origin: SN region: Senegal --- # 9 digital ignition curves high voltage & heat dissipation 5-pin plug easy install 5 Pin AC Racing CDI Box Digital Adjustable 9 Ignition Curves for COOLSTER 125cc 3125B 3125R 3125XR8 SSR Dirt Bike 50c 125cc ATV Quad Go Kart **Price:** 39734CFA **Availability:** ✅ In Stock ## Summary > ⚡ Ignite Your Ride: Tune, Race, Dominate! ## Quick Answers - **What is this?** 5 Pin AC Racing CDI Box Digital Adjustable 9 Ignition Curves for COOLSTER 125cc 3125B 3125R 3125XR8 SSR Dirt Bike 50c 125cc ATV Quad Go Kart - **How much does it cost?** 39734CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/706892566-5-pin-ac-racing-cdi-box-digital-adjustable-9-ignition) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Upgrade:** Direct 5-pin replacement for COOLSTER 125cc and compatible ATVs—no mods, no hassle, just instant performance boost. - • **Voltage Flexibility:** Wide 8V-25V adjustable range with battery-free voltage tuning means you stay in control without extra gear. - • **Precision Ignition Control:** 9 adjustable ignition curves let you fine-tune acceleration and throttle response for any terrain or riding style. - • **Built to Race, Built to Last:** Durable metal circuit board with plastic shell ensures superior heat dissipation and long-lasting reliability under pressure. - • **Overheat & Overvoltage Protection:** Smart input safeguards keep your engine safe while maximizing power output for that clean, aggressive sound. ## Overview The HANQIMOTO 5 Pin AC CDI Box is a high-performance, digital adjustable ignition controller designed for COOLSTER 125cc dirt bikes and compatible ATVs. Featuring 9 ignition curves, a 5-pin plug for easy installation, and robust heat dissipation, it delivers precise voltage control (8V-25V) without batteries. Built with overheat and overvoltage protection, this CDI box enhances throttle response, acceleration, and engine sound, making it a must-have upgrade for riders seeking reliable, race-ready performance. ## Description HANQIMOTO 5 Pin AC CDI Box High Performance Racing Part Digital Adjustable 9 Ignition Curves for COOLSTER 125cc 3125B 3125R 3125XR8 SSR Dirt Bike Chinese 50c 70c 90cc 110cc 125cc ATV Quad Go Kart Pit Dirt Bike【Material】Metal【Connector】5-pin male plug【Voltage】8V-25V adjustable【Other】Voltage can be adjusted without batteriesFeatures:Input overvoltage protection,high voltage regulation accuracy, can achieve 9 degrees adjustable working current in a short time, high charging power, and can accelerate forward on the basis of the original vehicle speed. Suitable for COOLSTER 125cc 3125B 3125R 3125XR8 SSR Dirt Bike Chinese 50c 70c 90cc 110cc 125cc ATV Quad Go Kart Pit Dirt BikeDigital Adjustable CDI Instruction: 1. After the CDI is turned on, the digital tube displays the curve before the last shutting down. 2.Every time you press the button, the number in the digital tube is added up by 1.0-9, and it will be displayed in a loop.0 means no ignition, 1-9 means 9 ignition curves. 3.The number will be remembered after each press, and the last ignition curve will still be displayed after the power is off. 4.The ignition curve 1 imeans that the ignition angle is relatively low, and 9 means that the ignition angle is high.The ignition angle difference between each curve is 1-2 degrees. 5.According to different sites and road conditions, choose different ignition curves to match. Review: It’s easy to use and work great - I really work well. I like it. I would definitely recommend buying it Review: Great upgraded CDI - This Universal CDI Box is a solid upgrade for my 125cc atv. Installation was easy, and it fits perfectly on my Coleman 125cc without any modifications. I noticed an immediate improvement in acceleration and overall performance after adjusting the ignition curves andnl cycling through the modes. The high voltage output feels consistent, and the unit seems durable and well-made, with good heat dissipation. Compared to the stock CDI, the unit does take up more space but it is a good performer. Overall, it’s a reliable, high-performance replacement part that’s easy to install and makes a noticeable difference on the bike. ## Features - FITMENT:The AC CDI Performance part is direct replacement for COOLSTER 125cc 3125B 3125R 3125XR8 SSR Dirt Bike,Chinese 50c 70c 90cc 110cc 125cc ATV Quad Go Kart Pit Dirt Bike.Aftermarket cdi built to meet OEM specifications. - DIGITAL ADJUSTABLE 9 IGNITION CURVES:The GY6 CDI adjustable box is alternating current(AC),with a 5-pin male plug connector,8V-25V adjustable.Voltage can be adjusted without batteries.Reset the ignition advance curve for better acceleration. - BLOODY GREAT UPGRADED:This racing high performance part makes our motorcycle/bike a completely different animal.High voltage adjustment accuracy,low working current,high charging power. - INPUT OVERHEAT PROTECTION & GOOD QUALITY:100% quality assurance tested.The racing CDI is made of plastic shell with metal circuit boards, provides good heat dissipation and extend service life.Durable and long lasting. - EASY TO INSTALL:Easy to use and this COOLSTER CDI Box can increase in performance after getting settings dialed in.Works excellent. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DQ5KJHQ3 | | Best Sellers Rank | #1,211,982 in Automotive ( See Top 100 in Automotive ) #556 in Powersports Ignition Computers | | Brand | HANQIMOTO | | Customer Reviews | 3.4 3.4 out of 5 stars (7) | | Date First Available | December 11, 2024 | | Exterior | Chrome | | Item Weight | 9 ounces | | Item model number | Coolster CDI | | Manufacturer | HANQIMOTO | | Manufacturer Part Number | Coolster CDI | | Model | Coolster AC CDI | | Package Dimensions | 5.43 x 4.33 x 1.38 inches | ## Images ![5 Pin AC Racing CDI Box Digital Adjustable 9 Ignition Curves for COOLSTER 125cc 3125B 3125R 3125XR8 SSR Dirt Bike 50c 125cc ATV Quad Go Kart - Image 1](https://m.media-amazon.com/images/I/71I1kJxNxdL.jpg) ![5 Pin AC Racing CDI Box Digital Adjustable 9 Ignition Curves for COOLSTER 125cc 3125B 3125R 3125XR8 SSR Dirt Bike 50c 125cc ATV Quad Go Kart - Image 2](https://m.media-amazon.com/images/I/61KdnKRcrWL.jpg) ![5 Pin AC Racing CDI Box Digital Adjustable 9 Ignition Curves for COOLSTER 125cc 3125B 3125R 3125XR8 SSR Dirt Bike 50c 125cc ATV Quad Go Kart - Image 3](https://m.media-amazon.com/images/I/61S0g+K19qL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ It’s easy to use and work great *by K***Z on March 26, 2026* I really work well. I like it. I would definitely recommend buying it ### ⭐⭐⭐⭐ Great upgraded CDI *by T***S on November 24, 2025* This Universal CDI Box is a solid upgrade for my 125cc atv. Installation was easy, and it fits perfectly on my Coleman 125cc without any modifications. I noticed an immediate improvement in acceleration and overall performance after adjusting the ignition curves andnl cycling through the modes. The high voltage output feels consistent, and the unit seems durable and well-made, with good heat dissipation. Compared to the stock CDI, the unit does take up more space but it is a good performer. Overall, it’s a reliable, high-performance replacement part that’s easy to install and makes a noticeable difference on the bike. ### ⭐⭐⭐⭐⭐ it works perfectly *by C***A on October 11, 2025* Starting is faster, throttle response is better, and the engine sounds much cleaner. Installation was super easy; I just disconnected the old one and connected this one. I've been using it with zero issues. For the price, it's totally worth it if you want to squeeze a little more performance without having to deal with complicated modifications. I recommend it. ## Frequently Bought Together - HANQIMOTO CDI Box,5 Pin AC CDI Racing,SSR 125 Pit Bike Parts,Digital Adjustable 9 Ignition Curves for COOLSTER 125cc 3125B 3125R 3125XR8 SSR Dirt Bike,Racing CDI for 50c 125cc ATV Quad Go Kart - 2 Coil Ignition Magneto Stator Plate for 50 70 90 110 125cc Taotao Kazuma SSR Baja ATV Quad Dirt Kick Bike 4 Wheeler,Magneto Flywheel Puller for Yamaha Honda Kawasaki Suzuki Scooter Dirt Bike - LAXEEM Wire Harness Wiring Loom CDI Ignition Coil Spark Plug Rebuild Kit for 50cc 70cc 90cc 110cc 125cc Stator CDI Coil ATV Quad Bike Buggy Go Kart --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/706892566-5-pin-ac-racing-cdi-box-digital-adjustable-9-ignition](https://www.desertcart.sn/products/706892566-5-pin-ac-racing-cdi-box-digital-adjustable-9-ignition) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-06-07*