Moose Utility 2003-2008 Yamaha Grizzly 660 Standard Axle - Rear Left

A clicking CV joint or a torn boot can end a ride fast, and a snapped axle can leave you walking. The Moose Utility 2003-2008 Yamaha Grizzly 660 Standard Axle - Rear Left (part number LM6-YA-8-301) is a complete, ready-to-install axle from Moose Utility for the Yamaha Grizzly 660, rear left position. It is an OEM-style replacement built with a 4340 chromoly steel bar and fully assembled joints.

Witchdoctors carries Moose Utility drivetrain, suspension and recovery parts for UTVs and ATVs. Check the fitment and position below, and contact our team if you have questions before you order.

Why Choose Moose Utility

Moose Utility Division is the UTV and ATV parts line from Parts Unlimited, focused on replacement and upgrade parts that hold up to farm, hunting and trail use. Its axles come fully assembled, so you can swap one in without rebuilding joints or packing grease yourself.

Key Features

• 4340 chromoly steel axle bar
• Precision-ground internal components
• Fully assembled inboard and outboard joints
• Packed with high-temperature, high-load moly grease
• Stainless steel low-profile boot clamps
• Includes spindle nut and washer where applicable

Specifications

• Brand: Moose Utility
• Part number: LM6-YA-8-301
• Product line: Standard complete axle kit
• Position: Rear Left
• Material: chromoly steel
• Machine type: ATV
• Model years: 2003-2008

Fitment and Compatibility

Listed for 7 Yamaha Grizzly 660 model configurations from 2003-2008, including Yamaha YFM660F Grizzly 4x4 2003-2004 and Yamaha YFM660FA Grizzly 4x4 2005-2008. Use the fitment tool on this page to confirm your exact year, model and trim.

Axles are position-specific. This one is listed for the Rear Left. Check the position against your machine and the old axle before ordering.

Signs You Need a New Axle

• Clicking or popping when turning under power
• Vibration that gets worse with speed
• Grease slung around the inside of the wheel from a torn boot
• Excessive play or clunking when you rock the axle by hand
• A bent shaft after a hit on a rock or stump

Standard vs. OEM Replacement vs. Heavy Duty

Moose Utility axles come in several lines. Standard axles are OEM-style replacements for everyday work and trail riding. OEM Replacement CV axles use heat-treated chromoly internals built to exceed stock quality. Heavy Duty axles are made for bigger tires, lift kits and more aggressive riding. If you have added tires more than one or two sizes over stock, or a lift, consider a heavy-duty axle.

Installation

Support the machine safely, remove the wheel, loosen the spindle nut and separate the knuckle or lower ball joint as your service manual describes. Pull the old axle from the differential, check the seal, and slide the new axle in until the retaining clip seats. Torque the spindle nut to spec and install a new cotter pin where used.

Pro Tip

Check the differential seal while the axle is out. A leaking seal is cheap to replace now and can ruin a new axle’s inner joint later.

Care and Maintenance

Inspect the CV boots after every few rides, especially after mud, brush or rocks. A small tear lets in dirt and water that destroy the joint quickly. Wash the boots off after muddy rides and consider axle or CV boot guards if you ride in rocks or heavy brush.

Why Buy From Witchdoctors

Witchdoctors carries Moose Utility parts with fast shipping and a team that knows UTVs and ATVs. Tell us your year, make and model and we will help you confirm the right axle and position.

Pair It With

• Moose Utility 2003-2008 Yamaha Grizzly 660 Standard Axle - Front Right (LM6-YA-8-211)
• Moose Utility 2003-2008 Yamaha Grizzly 660 Standard Axle - Rear Right (LM6-YA-8-302)
• Moose Utility 2003-2008 Yamaha Grizzly 660 Standard Axle - Front Left (LM6-YA-8-111)

UTV & ATV Axles · UTV & ATV CV Boots · Moose Utility Division

Helpful Guides From the Witchdoctors Blog

• How to Tell If Your UTV or ATV Axle Shaft Is About to Snap
• How Do I Know if My UTV or ATV CV Joint Is Ruined?
• UTV & ATV Axle & CV Boot Guards: The Ultimate Protection for Your Off-Road Drivetrain
• OEM vs. Aftermarket CV Boots: Which is better?

Frequently Asked Questions

Does this come fully assembled?

Yes. It is a complete axle with both joints, boots and clamps installed.

Is it a left or right axle?

It is listed for the rear left position. Check the title and fitment above for your machine.

Will it fit my machine?

Use the fitment tool on this page with your exact year, model and trim, or contact our team.

Do I need a heavy-duty axle?

If you run oversized tires, a lift kit or ride aggressively, a heavy-duty axle is worth considering. For stock machines, this axle is a direct replacement.

What else should I replace?

Check the differential seal, wheel bearings and lower ball joint while everything is apart.

Where to Ride

Get your machine back on the trail:

• Barnwell Mountain Recreation Area (Gilmer, Texas): about 50 miles of trails
• Georgia Offroad Adventures (Union Point, Georgia): about 150 miles of signed trails

Order Today

Add the Moose Utility 2003-2008 Yamaha Grizzly 660 Standard Axle - Rear Left (LM6-YA-8-301) to your cart and Witchdoctors will ship it fast. Questions about fit? Contact our team.

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Returns

If your order arrives and it is not right, we will we'll fix it. We promise!

Doesn't fit or just not happy with it? You can return any new, unopened, unused or unaltered item within 30 business days of delivery receipt of your item. We will issue a refund to your original payment method.

See our full Return Policy for all of the pertinent details.