Harvey's ATV Blog

What To Wear On Your ATV Ride Jan 10, 2023 Whether you’re hitting the trails, the dunes, or the road, you want to be sure to wear the right gear. That said, you don’t necessarily have to buy a bunch...

Polaris RZR: Your Full Guide JAN 5, 2023 Harvey’s ATV reviews the Polaris RZR XP 1000, one of the most popular ATVs on the market. Strap in for a full rundown on the features and handling of this high-performance machine. The...

ATV Reviews: Polaris RZR 1000 DEC 13, 2022 Harvey’s ATV reviews the Polaris RZR XP 1000, one of the most popular ATVs on the market. Strap in for a full rundown on the features and handling of this high-performance machine.  A...

Polaris Clutch Weights Chart May 18, 2022 Your ATV’s continuously variable transmission (CVT) is a delicate beast. Each part is expected to work in an action-reaction chain with dozens of steps. The shift weights in your primary “drive” clutch are...

Polaris Clutch Balancing: Your Complete Guide May 11, 2022 When it comes to your Polaris ATV’s clutch, either it’s balanced or it’s not. But what does it mean to balance a clutch, and why does it matter? Harvey's is here with...

HOW2'S & REVIEWS May 4, 2022 We were happy to find out Donald from How2's & Reviews did an episode on our RZR 900 Primary and Secondary clutch bundle. Check it out! Stay Tuned To join our mailing list and...

Primary Clutch Springs Explained (With Charts!) PUBLICATION DATE Your ATV or UTV’s Polaris primary clutch spring is a core part of your ride’s continuously variable transmission (CVT). While you might be more used to seeing springs in mattresses or trampolines,...

CVT ENGINES IN ATVS & 4 WHEELERS PUBLICATION DATE Many of humanity’s coolest contraptions use simple physics to perform their tasks. The transmission of your ATV or UTV is no different. One of the most common transmission types in these...

We’ve already taken apart and explained the mechanics behind the primary “drive” clutch, but what about the secondary “driven” clutch? How do ATV/UTV secondary clutches operate in a continuously variable transmission? Harvey’s is here to break it down for you.

The Polaris primary clutch is one of the most crucial and intricate parts of your ATV, but the mechanics behind it are basic physics — leverage, resistance, mass, and centrifugal force. 

In this article, we’ll explain the different parts and functions of an ATV primary clutch.