--- product_id: 224912973 title: "Lifan 125cc Engine Semi-Auto 4 Stroke Motor for Trail Bike CT70 90 110 125 Dirt Bike Trike Four Wheeler" brand: "tdpro" price: "HK$9797" currency: HKD in_stock: true category: "Tdpro" url: https://www.desertcart.hk/products/224912973-lifan-125cc-engine-semi-auto-4-stroke-motor-for-trail store_origin: HK region: Hong Kong --- # Standard mounting for universal fit 125cc high-performance engine 15T 428 chain sprocket with auto clutch Lifan 125cc Engine Semi-Auto 4 Stroke Motor for Trail Bike CT70 90 110 125 Dirt Bike Trike Four Wheeler **Brand:** tdpro **Price:** HK$9797 **Availability:** ✅ In Stock ## Summary > ⚡ Upgrade your ride, dominate the trail! ## Quick Answers - **What is this?** Lifan 125cc Engine Semi-Auto 4 Stroke Motor for Trail Bike CT70 90 110 125 Dirt Bike Trike Four Wheeler by tdpro - **How much does it cost?** HK$9797 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/224912973-lifan-125cc-engine-semi-auto-4-stroke-motor-for-trail) ## Best For - tdpro enthusiasts ## Why This Product - Trusted tdpro brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seamless Gear Shifting:** Smooth N-1-2-3-4 transmission with automatic clutch for effortless control - • **Universal Compatibility:** Fits most monkey, dax, supercub, pitbike & CT70 series with standard mounts - • **Engineered for Longevity:** Break-in guide ensures optimal performance and durability from day one - • **Complete Installation Kit:** Includes engine, intake manifold, kick starter & hardware for quick upgrade - • **Power-packed 125cc Engine:** Unleash reliable 4-stroke performance for your trail adventures ## Overview The Lifan 125cc Semi-Auto 4 Stroke Engine is a robust, easy-to-install power upgrade designed for popular trail bikes like CT70, 90, 110, and 125 models. Featuring a smooth 4-speed transmission with automatic clutch and standard mounting points, this kit includes everything needed for a quick, reliable swap. Perfect for riders seeking enhanced performance and durability on dirt bikes, trikes, and four-wheelers. ## Description This high performance Lifan 125cc engine was made in china.How to break-in:Any new engine requires break in. Run it the first time until good and warm then let it cool completely.Don't ride until the second run up and only half throttle. Cool completely again. Continue the same and add longer run time as you go. Use oil as long as it says 4t on the bottleEngine Kit including:1 x Lifan 125cc engine1 x Kick Starter Lever1 x Gear Shift Lever1 x intake manifold1 x Manifold hardware kit ## Features - Lifan 1P54FMI 125cc engine, Gears: N-1-2-3-4, Automatic clutch with 15T 428 chain sprocket, Shaft size: 20mm - Has the standard mounting points, fit basically any monkey/dax/supercub/pitbike - Replacement / upgrade for Trail Bike CT70 90 110 125 and other most popular bikes - This kit comes with: engine, intake manifold, kick starter, manifold kit - Please check the mounting hole spacing before buying ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08G8HB1F5 | | Best Sellers Rank | #475,082 in Automotive ( See Top 100 in Automotive ) #190 in Powersports Engine Kits | | Brand | TDPRO | | Customer Reviews | 4.8 4.8 out of 5 stars (23) | | Date First Available | July 20, 2018 | | Item Weight | 53.3 pounds | | Manufacturer | TDPRO | | Manufacturer Part Number | USATD204 | | Package Dimensions | 20.2 x 15.7 x 14.4 inches | ## Images ![Lifan 125cc Engine Semi-Auto 4 Stroke Motor for Trail Bike CT70 90 110 125 Dirt Bike Trike Four Wheeler - Image 1](https://m.media-amazon.com/images/I/71ntPjP6SaL.jpg) ![Lifan 125cc Engine Semi-Auto 4 Stroke Motor for Trail Bike CT70 90 110 125 Dirt Bike Trike Four Wheeler - Image 2](https://m.media-amazon.com/images/I/71wbe-K2-5S.jpg) ![Lifan 125cc Engine Semi-Auto 4 Stroke Motor for Trail Bike CT70 90 110 125 Dirt Bike Trike Four Wheeler - Image 3](https://m.media-amazon.com/images/I/71OXmM5yR3L.jpg) ![Lifan 125cc Engine Semi-Auto 4 Stroke Motor for Trail Bike CT70 90 110 125 Dirt Bike Trike Four Wheeler - Image 4](https://m.media-amazon.com/images/I/716Zummt2+L.jpg) ![Lifan 125cc Engine Semi-Auto 4 Stroke Motor for Trail Bike CT70 90 110 125 Dirt Bike Trike Four Wheeler - Image 5](https://m.media-amazon.com/images/I/716vyqHnPKL.jpg) ## Questions & Answers **Q: I have a 1968 honda ct90 will this fit and work with my wiring harness?** A: Yes **Q: How much oil do you put in it?** A: around 0.8L to 1 L **Q: Would this motor fit on a 2001 yz125** A: In my opinion it won't fit this engine is horizontal **Q: Has anyone been able to get this motor installed using the basic mount adapter brackets in a Trail 90/CT90? Im worried the starter wont clear frame** A: I have a c50 square headlight with lifan 125 with starter ## Frequently Bought Together - Lifan 125cc Engine Semi-Auto 4 Stroke Motor for Trail Bike CT70 90 110 125 Dirt Bike Trike Four Wheeler - PZ20 Carburetor for Kazuma Baja 50cc 70cc 90cc 110cc 125cc TaoTao 110B NST SunL 4 Stroke ATV 4 Wheeler Go Kart Dirt Bike Honda XR70R XL75 CRF80F XR80 - Mighty Max Battery YTX4L-BS - 12 Volt 3 AH, 50 CCA, Rechargeable Maintenance Free SLA AGM Motorcycle Battery --- ## 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.hk/products/224912973-lifan-125cc-engine-semi-auto-4-stroke-motor-for-trail](https://www.desertcart.hk/products/224912973-lifan-125cc-engine-semi-auto-4-stroke-motor-for-trail) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-08-14*