Crankshaft by Yamaha

Yamaha UTV/ATV & Side by Side Crankshaft & Bearings - Available at buywitchdoctors.com

Product Specifications: Genuine OEM Yamaha Crankshaft, Part # BYS-E1400-00-00.

Keep your machine running like new with a genuine Yamaha Crankshaft & Bearings paired with premium maintenance parts from buywitchdoctors.com. The crankshaft converts the up-and-down motion of the piston and connecting rod into the rotation that drives your transmission, while the main and rod bearings support it and let it spin smoothly under enormous load. Because the crank and bearings turn thousands of times a minute, their condition is critical to engine smoothness, oil pressure, and long-term reliability. Riders most often replace a crankshaft and bearings after a deep knocking or rumbling noise from the bottom end, excessive vibration, play or roughness when the crank is turned by hand, metal particles in the oil or filter, a bent or scored crank, worn or spun bearings, a loss of oil pressure, or damage from overheating, oil starvation, water ingestion, or a thrown rod.

Why Choose Genuine OEM Yamaha Parts?

Choosing original equipment manufacturer (OEM) parts ensures your vehicle maintains its factory-standard performance, reliability, and fuel efficiency. Genuine parts eliminate the guesswork of aftermarket alternatives, offering a seamless integration with your engine's configuration.

• Exact-Fit Design: Matched to Yamaha's original bolt patterns, sealing surfaces, and dimensions for a leak-resistant fit.
• Factory-Spec Quality: Built to the same standards as the parts installed on your machine at the factory.
• Peace of Mind: Skip the trial and error of universal or aftermarket parts that may not seal or align correctly.

Premium Materials & Precision Engineering

Crafted to strict factory tolerances, these components utilize high-grade alloys and chemical-resistant seals. This specialized engineering withstands harsh off-road vibrations, extreme temperatures, and modern fuel additives, preventing premature wear and leaks. The crankshaft is forged or cast from hardened, fatigue-resistant steel with precisely ground, balanced journals, and the bearings use tightly controlled surfaces and tolerances, so the assembly spins true, resists wear and bending, and keeps a stable oil film under high speed and heavy load.

Comprehensive Model Fitment (2015-Current)

This genuine OEM part is engineered for a wide range of Yamaha side-by-side (SxS) and all-terrain vehicles (ATV) built from 2015 to the current model year. Please verify your series matches below:

Utility Task Vehicles (UTVs / Side-by-Sides)

• Viking Series: Viking 700 EPS, Viking 700 Ranch Edition, Viking VI EPS
• Wolverine Series: Wolverine R-Spec, Wolverine X2 850, Wolverine X4 850, Wolverine X2 1000, Wolverine RMAX2 1000 (Sport, XT-R, Limited), Wolverine RMAX4 1000
• YXZ Series: YXZ1000R, YXZ1000R SS

All-Terrain Vehicles (ATVs)

• YFZ Series: YFZ50, YFZ450R, YFZ450R SE
• Raptor Series: Raptor 90, Raptor 110, Raptor 700, Raptor 700R, Raptor 700R SE
• Grizzly Series: Grizzly 90, Grizzly 110, Grizzly 700 EPS, Grizzly 700 SE, Grizzly 700 XT-R
• Kodiak Series: Kodiak 450, Kodiak 450 EPS, Kodiak 700, Kodiak 700 EPS, Kodiak 700 SE

⚠️ IMPORTANT DISCLAIMER: Fitment can vary by production date and sub-model trim. Always verify your exact original equipment part number from your vehicle's schematic or consult a certified technician before finalizing your purchase to guarantee flawless compatibility.

Other Popular Parts & Secondary Accessories

• Crankshaft Bearings: Crankshaft bearings support the crank as it spins and sit directly in the case bores. Replace them with every crank installation, and inspect the bores for wear or spinning so the new bearings seat tightly.
• Crankshafts: A complete crankshaft is the right fix when the journals are scored, the crank is bent, or the rod bearings have failed. Replace the bearings and seals at the same time so the bottom end is fully refreshed.
• Crank Bearing/Seal Kits: Crank bearing and seal kits bundle the bearings and seals needed where the crank exits the case. Using a kit while the engine is split helps keep oil in and contaminants out of your rebuild.
• Stroker Crankshafts: Stroker crankshafts increase displacement for more power and torque in a performance build. If you go this route, confirm that the case, piston, cylinder, and clearances are compatible and follow your Yamaha service manual.
• Crankcase & Components: The crankcase holds the crank and bearings in precise alignment. Inspect the bearing bores, mating surfaces, and bolt holes for damage whenever the engine is apart so the new crank sits true.

Frequently Asked Questions (FAQs)

Q: How do I know when my Yamaha crankshaft or bearings need to be replaced, and how do I confirm the right ones for my machine?
A: Warning signs include a deep knock or rumble from the bottom end, new vibration, metal particles in the oil or filter, low oil pressure, and play, roughness, or visible scoring when the crank is inspected. Before replacing parts, check the oil condition and level, the oil pump and filter, and the connecting rod and piston, since damage elsewhere can cause similar symptoms or ruin a new crank. Because cranks and bearings vary by model, model year, and engine, confirm the correct parts and the proper inspection, measuring, and assembly procedure using your Yamaha service manual or factory schematic, or contact us with your model and VIN and we will help you match them.

Q: How do mud, water, sand, and heat affect a crankshaft and bearings on the trail?
A: The crank lives inside the engine, but harsh conditions can still hurt it indirectly. Water or dust getting past the intake or breather can contaminate the oil, and heat or low oil can starve the bearings and cause rapid wear. Keep your air filter and breather lines clean and sealed, change oil on schedule, and after deep water crossings check for milky oil or new noises. Follow your Yamaha service manual for correct service intervals and water-crossing guidance.

PRO TIP: Learn More about Yamaha OEM vs. Aftermarket Parts

PRO TIP: How to Tell If Your UTV or ATV Crankshaft Bearings Are Failing?

PRO TIP: ATV/UTV Engine Crankcase Buyer’s Guide: Structural Integrity Over Cutting Corners

PRO TIP: Failing Balance Shaft Symptoms & Fixes on Your ATV or UTV

PRO TIP: How to Diagnose a Bad UTV or ATV Crank Position Sensor

Are You Looking to Find Great Places & Adventurous Trails to Ride Your UTV, Side by Side or ATV? Check out these highly recommended places:

• Northern Outdoors
• Imperial Sand Dunes
• Johnson Valley OHV Area
• Gypsum City OHV Park
• Leatherwood Off-Road Park