Y15/LC135 II [5S] (RAC) CRANKSHAFT ASSY FURIOUS ONCE

Unleash serious power with the Y15/LC135 II [5S] (RAC) Crankshaft Assembly from Furious ONCE – the backbone upgrade that transforms your bike from mild to wild.

What makes it special:

• Race-spec construction balanced to higher RPMs than stock could ever dream of
• Precision-ground journals deliver smoother power and reduced vibration
• Hardened steel construction stands up to extreme power mods
• Direct replacement for Y15 and LC135 II [5S] models

This isn’t some refurbished stock part. Our (RAC) Crankshaft Assembly features optimized counterweights, nitride-treated surfaces, and roller bearings that maintain perfect alignment even under extreme load conditions.

Why serious builders choose Furious ONCE:

• Engineered to handle power levels that would destroy factory components
• Built with tighter tolerances than OEM for reduced power loss
• Real durability that lets you ride hard without worrying about catastrophic failure

Perfect for: Y15/LC135 II owners building serious performance machines, racers competing at any level, or anyone tired of replacing bent factory cranks.

Visit Furious ONCE Official Website for our complete selection of engine internals designed for riders who push their bikes beyond what the factory ever intended.