JAVIK Rear Wheel Bearings for Polaris Sportsman Ranger RZR ACE 40x74x40 — Heavy-Duty, Stainless-Seal Kit (Includes Retaining Rings

JAVIK Rear Wheel Bearings (40x74x40) are heavy-duty, direct-replacement bearings engineered to restore smooth rear-wheel rotation for supported Polaris ATV and UTV models.

This kit replaces worn or noisy rear hub bearings with two precision 40x74x40 bearings plus two retaining rings (7710440), offering a durable OEM-compatible solution for Polaris Sportsman, Ranger, RZR and ACE vehicles. Manufactured from hardened steel with stainless-steel seal covers and G10Z4-grade steel balls, these bearings are designed to reduce play, vibration and hub noise when installed correctly. The set ships ready for installation and includes the specific OEM reference numbers 3585502, 3514635, 3514917, 3515087 and 7710440 to help you verify fitment against your vehicle.

How do these bearings improve rear-wheel performance?

Replacing worn bearings restores proper hub alignment and reduces unwanted movement in the rear wheel assembly, producing smoother rotation and quieter operation. The improved seal cover and thicker bearing race help keep contaminants out and maintain lubrication life, which extends component longevity under rough service.

• Precision 40x74x40 sizing matches factory specifications for compatible Polaris models.
• Stainless-steel seal covers resist corrosion and shed water and mud more effectively than rubber alone.
• G10Z4-grade steel balls and thicker race material increase load capacity and wear life.
• Includes retaining rings (7710440) for secure hub installation.

Which Polaris models and OEM numbers does this kit fit?

This JAVIK kit is intended as a direct replacement for a range of Polaris ATVs and UTVs; always cross-check your vehicle’s year, make and model before ordering. The product references correspond to common factory bearing part numbers used across Sportsman, Ranger, RZR and ACE model lines.

• OEM cross-reference numbers: 3585502, 3514635, 3514917, 3515087, 7710440.
• Commonly fits rear hubs on Polaris Sportsman, Ranger, RZR and ACE; confirm fit using your vehicle info.
• Install two bearings (40x74x40) and two retaining rings included in the package.

What materials and manufacturing features matter for durability?

Materials and seal design determine how well a bearing resists moisture, dirt and high loads in off-road environments. JAVIK bearings use hardened steel with a stainless-steel cover and quality-grade steel balls to balance corrosion resistance, load capacity and long-term wear performance.

• Hardened steel races for improved wear resistance under high torque and impact loads.
• Stainless-steel seal covers instead of standard rubber to better protect internal components.
• G10Z4-grade steel balls for consistent rolling contact and reduced deformation over time.
• Pre-tested with shake and quality control checks to meet replacement expectations.

How easy is installation and what’s included in the package?

The kit ships with two bearings (40x74x40) and two retaining rings (7710440) so you have the essential pieces for a standard rear hub replacement. If you’re comfortable with ATV/UTV wheel and hub service, installation is straightforward; otherwise a mechanic can install and torque the bearings to factory specs.

• Package contents: Bearing (40x74x40) x2, Retaining Ring (7710440) x2.
• Pre-measured to match OEM dimensions for direct replacement.
• JAVIK provides 24-hour customer support and a 1-year product service policy.

Who is this for: This JAVIK rear wheel bearing kit is aimed at Polaris owners and independent mechanics who need a robust, OEM-compatible replacement for worn rear hub bearings. It’s suited to riders who encounter wet, muddy or high-impact conditions and want a longer-lasting bearing with improved sealing and material quality compared with basic aftermarket options. Always verify your vehicle fitment using year, make and model before purchasing and follow proper installation procedures or trusted service technicians for best results.