2005 Polaris Sportsman 6x6 Suspension Parts: A Complete Guide to Upgrades and Replacements

The 2005 Polaris Sportsman 6x6 is a unique machine designed for hauling and off-road work. Over time, its suspension components wear out, leading to a rough ride and reduced handling. Whether you are refreshing original parts or upgrading for better performance, understanding the suspension system is key. This guide covers the front and rear suspension parts, common failure points, and what to look for when replacing or upgrading components on your 2005 Sportsman 6x6.

Understanding the 2005 Polaris Sportsman 6x6 Suspension System

The Sportsman 6x6 uses a fully independent suspension (IFS) at the front and a semi-independent or straight-axle setup at the rear, depending on year and model. The 2005 model has independent rear suspension (IRS) on the rear two axles, but the center axle is rigid. The system includes shocks, springs, A-arms, ball joints, sway bars, and bushings. The stock suspension is tuned for load carrying and moderate off-roading, but upgrading can improve ride quality and capability.

Front Suspension Components

The front suspension on the 2005 Sportsman 6x6 uses double A-arms with coil-over shocks. Key parts include:

Shocks and Springs

Stock front shocks are non-adjustable, providing limited damping. Worn shocks cause bottoming out and poor control. Replacements include OEM-style shocks or aftermarket upgrades like gas-charged or adjustable shocks. Progressive springs can also improve ride quality over rough terrain.

Upper and Lower A-Arms

These are typically steel and can bend from impact. Aftermarket A-arms are available in stronger steel or aluminum. If your machine has alignment issues or clunks, inspect the A-arm bushings and ball joints.

Ball Joints and Tie Rod Ends

These wear over time, causing sloppy steering and tire wear. Replace them in pairs. Moog or OEM-quality ball joints are recommended.

Sway Bar (Front Stabilizer Bar)

The front sway bar reduces body roll. Its bushings often crack and cause noise. Polyurethane sway bar bushings are a durable upgrade.

Rear Suspension Components

The 2005 Sportsman 6x6 rear suspension is complex, with three axles. The first two axles (rear-most) have independent suspension with trailing arms and shocks. The center axle is a fixed axle with leaf springs. Common parts:

Rear Shocks and Springs

Each independent rear wheel uses a shock and spring. Worn rear shocks lead to sagging and poor handling under load. Consider upgrading to heavy-duty shocks if you often haul loads.

Trailing Arms and Bushings

Trailing arms connect the rear hub to the frame. Their bushings wear quickly, causing rear-end wandering. Replace with urethane bushings for longer life.

Leaf Springs (Center Axle)

The center axle uses leaf springs that can sag over time. Helper springs or springs with higher load ratings are available.

Rear Sway Bar

Some models have a rear sway bar. Check your machine; if equipped, the bushings may need replacement.

Common Suspension Problems on the 2005 Sportsman 6x6

• Front end clunking: Usually due to worn ball joints or A-arm bushings.
• Rear end sagging: Worn rear shocks or leaf springs.
• Excessive sway or body roll: Worn sway bar bushings or weak shocks.
• Uneven tire wear: Misalignment from bent A-arms or worn tie rods.
• Bottoming out: Shocks that have lost damping or weak springs.

How to Choose Replacement Parts

When shopping for suspension parts, consider the following:

• OEM vs Aftermarket: OEM parts are exact fit but cost more. Aftermarket offers upgrades at lower prices, but quality varies. Stick with reputable brands like Polaris OEM, All Balls, Tusk, or Moog.
• Material: Steel A-arms are affordable and strong; aluminum saves weight but is more expensive. Poly bushings outlast rubber.
• Adjustability: If you need to tune ride height or damping, look for adjustable shocks or spring perches.
• Load Range: If you carry heavy loads, choose springs and shocks rated for higher weight.
• Compatibility: Parts for the 2005 Sportsman 6x6 are specific. Always verify fitment with your VIN or parts diagrams. Some components are shared with the Sportsman 800 or 700 but not all.

Recommended Upgrades

• Front: Gas-charged shocks (e.g., Works Performance or Progressive) improve damping and reduce fade.
• Polyurethane bushings for all A-arms and sway bars reduce slop and last longer.
• Heavy-duty rear leaf springs if you use the dump box frequently.
• Adjustable front shocks for fine-tuning to your terrain.
• Reinforced ball joints from reputable brands to avoid premature failure.

Step-by-Step Replacement Tips

1. Safety first: Use jack stands. The machine is heavy.
2. Tools: Basic socket sets, torque wrench, ball joint press, and pry bar.
3. Front shocks: Remove the upper and lower bolts. Compress the shock if needed. Install new ones with anti-seize on threads.
4. A-arms: Remove wheels and brake calipers (avoid line disconnection). Unbolt the A-arm. Replace bushings using a press. Torque bolts with the suspension loaded.
5. Ball joints: Press out old joints, press in new ones. Grease fittings help longevity.
6. Rear shocks: Access from under the bed. Support the axle before removal.
7. Leaf springs: Remove bolts from shackles and spring eyes. Use a jack to support the axle.

Always look up factory torque specs. For standard bolts, use medium Loctite where needed.

Where to Buy Parts

Local Polaris dealers stock OEM parts but often at a premium. Online retailers like PartsVu, MFG Supply, and Rocky Mountain ATV have comprehensive inventories. For aftermarket upgrades, check All Balls, Tusk, and Pro Armor. Always confirm part numbers.

Final Recommendation

For most owners, replace worn bushings and shocks with high-quality aftermarket parts to save money compared to OEM. If you ride hard or carry heavy loads, invest in gas-charged shocks and poly bushings. Avoid cheap unbranded parts, as they may fail quickly. Prioritize safety: inspect ball joints and tie rods annually. The 2005 Polaris Sportsman 6x6 is a workhorse, and a refreshed suspension will extend its life and improve your time in the saddle.