Rocker Shaft by Yamaha

Yamaha UTV/ATV & Side by Side Rocker Arms & Tappets - Available at buywitchdoctors.com

Product Specifications: Genuine OEM Yamaha Rocker Shaft, Part # 7CT-E2156-00-00.

Keep your machine running like new with genuine Yamaha Rocker Arms & Tappets paired with premium maintenance parts from buywitchdoctors.com. Rocker arms and tappets carry motion from the camshaft to the valves, opening each valve at the right moment and letting it close again as the cam turns. Because they work thousands of times a minute under heat and load, their condition directly affects valve timing, power, idle quality, and how quietly the top end runs. Riders most often replace rocker arms and tappets after ticking or tapping from the top end, worn, pitted, or scuffed contact surfaces, excessive valve clearance that will not adjust out, a loss of power or rough idle, scored rocker shafts, stuck or collapsed tappets, metal in the oil, or damage from low oil, overheating, or over-revving.

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. Genuine rocker arms and tappets are made from hardened, wear-resistant steel with precisely ground contact surfaces and oil passages, so they follow the cam accurately, hold valve clearance, and resist pitting and wear through high RPM and constant heat cycles.

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

• Rocker Arms & Tappets: Extra or spare rocker arms and tappets let you replace parts as a matched set instead of one at a time. Replacing them together helps keep valve clearances and wear even across the top end.
• Cams & Components: The camshaft and its related parts drive the rocker arms and tappets. Check the lobes, bearings, and cam chain components whenever you replace rockers, since a worn cam wears new parts quickly.
• Top End Gaskets: Top end gaskets seal the head, cylinder, and related surfaces and are typically replaced whenever the top end is opened. Pair a fresh set with your valvetrain service for a leak-free reassembly.
• Pistons & Components: The piston, rings, and pin share the combustion chamber with the valves. If a valvetrain failure caused damage, inspect the piston crown for contact marks while the top end is apart.
• Engine Cylinders: The cylinder guides the piston and contains combustion pressure. Check the bore for scoring or wear during valvetrain service so compression is restored fully.
• Connecting Rods & Components: The connecting rods link the pistons to the crank. If metal debris or a dropped valve was involved, inspect the rods and bearings before reassembly.
• Engine Gaskets & Oil Seals: Engine gaskets and oil seals keep oil, coolant, and pressure where they belong. Replace them whenever the engine is opened so your repair starts clean and leak-free.

Frequently Asked Questions (FAQs)

Q: How do I know when my Yamaha rocker arms and tappets need to be replaced, and how do I confirm the right ones for my machine?
A: Listen for ticking or tapping from the top end, and look for pitted, scuffed, or flaking contact surfaces, scored shafts, excessive play, valve clearance that will not adjust, and metal particles in the oil. Before replacing parts, check the oil level and condition, the valve clearances, and the cam lobes, since low oil or a worn cam can cause the same symptoms. Because rocker arms and tappets vary by model, model year, engine, and intake versus exhaust position, confirm the correct parts and the proper inspection and adjustment 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 rocker arms and tappets on the trail?
A: Rocker arms and tappets live inside the engine, so harsh conditions affect them indirectly. Dust or sand past the air filter and water in the oil can wear contact surfaces quickly, and heat or low oil can cause scuffing and noise. Keep your air filter and intake sealed, change oil on schedule, and after deep water crossings check for milky oil or new ticking. Follow your Yamaha service manual for correct service intervals, valve adjustment, and water-crossing guidance.

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

PRO TIP: A Buyer’s Guide To UTV/ATV Internal Engine Components

PRO TIP: Learn more about How to Check Engine Cylinders & Power Loss.

PRO TIP: Learn more about How to Spot a Bad Camshaft & Valves.

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