Naraku Aprilia Af1 50 91-92/classic 97-99/mx 03-04 Nk105.19 Crankshaft

Naraku Aprilia Af1 50 91-92/classic 50 97-99/mx 50 03-04 Nk105.19 Crankshaft Silver . Upgrade your Aprilia Af1 50, Classic 50, or Mx 50 with the NARAKU NK105.19 racing crankshaft. This full-circle, heavy-cheek design boosts crankcase pre-compression and inertia, delivering improved cylinder filling and enhanced power in higher RPMs. Built to OEM quality standards for durability, this full-metal crankshaft is ideal for 70cc and above tuning projects, transforming your engine for exhilarating performance. Includes a 12mm small end bearing. NARAKU NK105.19 Racing Crankshaft for Aprilia Af1 50, Classic 50 & Mx 50Elevate your engine´s performance and reliability with the NARAKU NK105.19 crankshaft, expertly engineered for the Aprilia Af1 50 (1991-1992), Classic 50 (1997-1999), and Mx 50 (2003-2004) models. Whether you are performing a crucial engine rebuild or aiming for a significant power upgrade, this crankshaft stands as a benchmark for quality and performance in the Connecting rods and crankshafts category. It is the perfect heart for any serious 70cc and above tuning project, designed to transform your riding experience.This component is more than just a replacement part, it is a direct pathway to unlocking superior engine dynamics. Built for riders who demand more from their machine, it focuses on enhancing power delivery, especially in the higher rev ranges, while ensuring the durability needed to handle increased stress. Trust in NARAKU to provide a foundation for a powerful and dependable engine.Crankshaft.High quality crankshaft from Naraku.Made in Taiwan.Produced according to the OEM guidelines of Japanese vehicle manufacturers for perfect repairs and durability.This heavy-cheeked racing crank increases the pre-compression in the cases for improved filling.The extra inertia improves performance and the performance moves to the upper rev range.As opposed to the HPC crank with plastic inserts, this full metal version should only be used above 70cc.Delivery includes 12mm small end bearing.Key Benefits and Performance AdvantagesThe NARAKU NK105.19 is specifically designed as a full-circle, heavy-cheek racing crankshaft. This advanced design significantly increases the pre-compression in the crankcase. The result is a much more efficient cylinder charge, leading to a tangible boost in engine output. The added inertia from its solid construction smooths out engine operation at high RPMs and shifts the power band upwards, giving you exhilarating acceleration and top-end speed. Unlike standard or plastic-inserted HPC crankshafts, this full metal variant is engineered to withstand the immense forces generated by high-performance 70cc or larger cylinder kits, making it the definitive choice for ambitious tuning projects.CrankshaftsThis product is a high-performance, full-circle racing crankshaft intended for engine tuning and high-stress applications. Its construction is optimized for increasing primary compression and rotational mass, directly translating to improved volumetric efficiency and power output in the upper RPM spectrum. The robust, full-metal design ensures maximum stability and longevity when paired with powerful sport or racing cylinders, providing peace of mind during aggressive riding.Technical Specifications* Product: NARAKU NK105.19 Crankshaft* Type: Full-Circle / Heavy-Cheek Racing Crankshaft* Small End Bearing Size: 12mm (piston pin bearing is included)* Recommended Application: Exclusively for use with 70cc and larger cylinder kits* Manufacturing Standard: Produced in compliance with Japanese OEM quality guidelines* Aprilia Af1 50 (1991-1992) * Aprilia Classic 50 (1997-1999) * Aprilia Mx 50 (2003-2004)Choose the NARAKU NK105.19 crankshaft for an uncompromising upgrade that delivers both exceptional performance and the long-term reliability your high-output engine requires. tradeinn Motardinn