RS1 Billet 8620 Ring & Pinion Gears – 100% USA-Made, 30% Stronger (Billet)

 RS1 OWNERS: END THE DIFF NIGHTMARES   
NEW Billet 8620 Ring & Pinion Gears – 100% American-Made, Battle-Tested, Ready to Ship Built to Outlast Your Wildest Runs The stock RS1 front diff wasn’t made for 181 hp of turbo fury. One rock crawl too many and you’re staring at a $1500+ repair bill and a tow truck.

Not anymore. Introducing the All Geared Up UTV Billet 8620 Ring & Pinion Set – precision CNC-machined from aerospace-grade 8620 steel billet. No cast flaws. No weak spots. Just 30% stronger shear resistance than OEM and a 15% cooler-running diff under full send.

Why 8620 Billet Changes Everything

Real-World Torture Tested (Fall 2025)

• 300 ft-lb torque slams
• -20°F to 150°F thermal cycles
• Zero cracks. Zero failures.
• Backlash locked at 0.005-0.008” after 500+ miles of Baja whoops, Michigan mud, and Arizona jumps.

Beta riders report: “It feels bulletproof – no more babying the throttle.”

Proudly 100% Made in the USA

• Forged, machined, heat-treated, and dyno-validated right here in America.
• Lifetime craftsmanship warranty.
• Fast shipping from Alabama – no overseas delays.

Installs in <2 Hours – No Press Needed

1. Drain diff
2. Swap gears
3. Torque to spec
4. Send it.

Pro tip: Pair with RS1 Diff Refresh Kit (bearings + seals) for a full rebuild.

Specs & Options

• Fitment: Polaris RZR RS1 (all years)
• Price: $1199 
• In Stock: Limited batch – ships in 48 hours

Upgrade Before Your Next RideDon’t let a cracked ring gear ruin your weekend.
Grab your set now and join the RS1 revolution. BONUS: Drop your toughest trail story in the reviews – top 3 Gets 10 Percent back 

All Geared Up UTV – Tennessee Tough. Trail Proven.
Questions? Call (334) 412-3442 – we ride what we build.