High-Quality Crankshaft Assembly for Simson S50 KR51/1 SR4 Motorcycle Engine
Precision-machined from high-grade forged steel for superior durability and performance under extreme conditions. Balanced and polished to minimize vibration, ensuring smooth engine operation and extended lifespan. Direct replacement for Simson S50, KR51/1, and SR4 models, restoring factory-level power and efficiency. Ideal for engine rebuilds, performance upgrades, or vintage bike restoration projects. Exclusive bulk pricing for wholesalers—lowest global rates with no compromise on quality. Ships ready to install, backed by strict quality control for hassle-free integration. Stock up for large-scale orders and resale opportunities.