Best Motorbike Crankshafts of 2025

The Easyboost Bearing Tool simplifies the process of mounting bearings onto the crankshaft of 50cc scooters. With its innovative design, you can effortlessly install bearings thanks to the fine thread on the main screw, making the task much smoother. This tool is widely used in dealerships, allowing you to achieve professional results by simply turning the thrust nut with a flat wrench. Additionally, a video tutorial is available, guiding even beginners through the process of changing a crankshaft with ease.

The cyclingcolors Cotter Pins are essential for any biking enthusiast. This set includes two high-quality cotter pins, each with a diameter of 9 mm and a length of 43 mm. These pins are universal, making them suitable for a variety of vehicles, including bicycles, mopeds, and motorcycles. Having reliable cotter pins ensures that your crankshaft and chainwheel remain securely fastened, enhancing safety and performance during your rides. With these cotter pins, you can enjoy peace of mind while cycling.

The cyclingcolors Cotter Pins are a must-have for any vintage bicycle or motorbike enthusiast. This set includes two cotter pins, which are essential for securely attaching the crankshaft to your bike. With a diameter of either 9 mm or 9.5 mm and lengths ranging from 39.5 mm to 44 mm, these pins offer versatility for various applications. Whether you're working on a bicycle, moped, or motorcycle, these cotter pins provide the reliability you need for smooth operation.

The MZ ETZ 250 Washers are essential components designed specifically for the MuZ / MZ ETZ 250 models from 1981 to 1985. These crankshaft washers ensure a secure fit for your connecting rods, helping to maintain the integrity of your motorbike's engine. By using these washers, you can enhance the overall performance of your bike, providing a smoother ride. They also help to prevent wear and tear, extending the life of your crankshaft and ensuring reliable operation when you hit the road.

The PRATYAHARA Crankshaft Tool Set is expertly crafted from hardened steel, ensuring durability and longevity for your motorcycle maintenance needs. This high-quality tool set includes three sockets, sized M10, M12, and M14, providing versatility for various crankshaft installations. You can rely on this tool set to make your installation tasks more efficient, as it is designed to simplify the process and prevent damage to your bike. With its robust construction and thoughtful design, this tool set is a must-have for any motorbike enthusiast.

The Simson Crankshaft Shim is an essential component for various Simson models, including the S 51 B1-3, S 51 B1-4, S 51 B2-4, and S 51 C from the years 1980 to 1989. This shim is designed to support the crankshaft ball bearings, ensuring smoother operation and enhanced performance. By using this shim, you can help reduce wear and tear on your motorbike's engine, leading to increased longevity. It also improves the overall efficiency of your motorcycle, providing a more enjoyable riding experience.

The GOOFIT Crankshaft is a reliable replacement for 2-stroke 47cc and 49cc pocket bikes. With a pin-hole diameter of 12mm, it fits perfectly in your bike's engine. Made from high-quality metal, this crankshaft is designed to resist corrosion and provide durability, ensuring long-lasting performance. Its easy installation means you won’t need complicated tools, making it convenient for you to replace the crankshaft yourself, saving both time and money.

The Cyclingcolors Balancer Key is an essential component for motorbike enthusiasts. Designed for AM6 Minarelli models, this product ensures that your crankshaft operates smoothly. Its two-part design provides durability and reliability, allowing for efficient performance. With a width and height of 3mm, it is compact enough to fit seamlessly into your moped or scooter. By using this balancer key, you enhance the overall stability of your ride, ensuring a more enjoyable and safer driving experience.

The Nikou Half Circle Crankshaft is designed for 47cc and 49cc mini pocket bikes, ensuring compatibility for your needs. Its high-quality alloy construction makes it corrosion-resistant and durable, meaning you can rely on it for a long time. With stable performance, this crankshaft enhances the safety of your vehicle, providing peace of mind during rides. The exquisite craftsmanship guarantees high reliability, ensuring that your bike operates smoothly and effectively.

The Uadme Crankshaft Kit is designed for seamless compatibility with Husqvarna 136, 137, 141, and 142 chainsaws, making it an ideal choice for users. Crafted from corrosion-resistant alloy steel, this kit promises a long service life, ensuring your chainsaw remains reliable. With high load-bearing capacity, the piston prevents slippage and improves work efficiency, allowing you to tackle tasks with ease. Additionally, the easy installation feature means you can replace worn or broken parts without hassle, making maintenance straightforward.