Tech Articles

Polaris Jerking Off the Line or Refusing to Bac...

A jerky launch or a machine that will not downshift on a hill usually is not the belt. It is a flat-spotted roller inside the secondary clutch. Here is how...

Shredding a CF Moto ZForce 800, 950, or 1000? T...

The ZForce is a sport machine that spends its life at high RPM and high heat, and the drive belt takes the abuse. Here is why ZForce belts fail, how...

Engine Braking Grabbing Too Hard on Your 2011-2...

On a 2011-2014 Polaris RZR XP 900, the helix in the secondary clutch decides how hard engine braking bites and how quickly the belt backshifts. Here is how to read...

Bolted 32s or 35s on Your Polaris RZR Pro XP or...

Oversized tires raise your effective final drive ratio, and the factory clutch calibration has no idea. Here is what larger tires do to shift RPM and belt grip on a...

Crawling and Hauling With a Kawasaki Teryx KRX ...

The KRX uses a centrifugal clutch ahead of the CVT, which takes the shock out of engagement. What it does not do is take heat out of the belt during...

Belt Dust Packing Your Polaris RZR XP 1000 Clut...

The OEM clutch fan is RPM-dependent, so the hottest, dirtiest riding you do is exactly when it moves the least air. Here is why belt dust and heat build up...