Sportsman DBW 570 EBS 28" + tires

(and some heavy 27" tires for mud applications)

2014-15, 2018-2020 only (2016-17 have different secondary clutch)

NOT for 2021 model.

Designed to correct the shift pattern for larger tires. It is physics...larger tires, the resulting gearing, and added rotating weight hurt acceleration. People who have tested tire sizes know that even a slightly larger or heavier tire hurts performance and speed. Proper clutch calibration can help recover much of that loss and improve belt grip and bottom end performance. This kit includes a new primary spring and the Quick Adjust flyweights and hardware, along with a different secondary spring. The instructions and "set up guide" include settings for all tire sizes and terrain.

* using a heavier secondary spring when not necessary can affect top speed.

DP 850-12

2012-2021 models
The introduction of the HO (High Output) version of the 850 engine brings new horsepower. Different power output means different calibration. This is the clutch kit for the HO version of this popular ATV model, and includes a new base weight and spring calibrations for the primary and secondary.

Sportsman 850 clutch kits can be set up for different terrain and tires sizes/elevations. This means accurate clutch tuning for your situation. Improved acceleration as well as better backshifting as the vehicle comes under load.

Kits include Dalton's patented "Quick Adjust" flyweight system that allows you to add or subtract weight from the flyweights without even removing the flyweights from the drive clutch. This is a great feature for those who run different tires in alternate seasons! The new "Quick Adjust" SP850 flyweights included have a different curvature, and location of mass which allows superior belt grip and RPM control.

Easy RPM control (can be easily adjusted)
Stock tires or oversized
Altitude adjustable
New custom SP 850 specific flyweight profile
Set up manual includes set up instructions for above applications
Year / model specific kits*

DP 570EBS 2014-15/2018-2020 ( 2016,17 have different secondary clutch) – not for 2021

This kit is designed to maximize efficiency for stock to 27" tire sizes. A fully adjustable kit for the primary clutch that includes two primary springs for engagement preference, as well as Quick Adjust Flyweights and hardware. Uses the stock secondary spring for most applications. Instructions include settings for the quick adjust flyweights for different tire sizes, as well as instructions for the use of an optional secondary spring and settings for the larger 28"+ tire sizes if you change at a later time.

DBW 570N

Non EBS version for 28" + tire sizes. (* including some heavy 27" for mud applications).

Includes a new primary spring, a custom helix, and a new torsion secondary spring. Instructions include a "set up guide" including secondary spring adjustments for different tire sizes. This also includes settings for the stock secondary spring if you alternate to smaller 26" tires, etc.

* using a heavier secondary spring when not necessary can affect top speed.
The Standard Non-EBS version is well calibrated for stock 25" tires and no clutch re-calibration is necessary. The older adjustable torsion style secondary clutch allows for a bit of flexibility. For oversized tires in this application we have two different cost effective kits.

DP 1000

2014-2023 Polaris Scrambler/Sportsman 1000 4X4 ATV Stock or oversized tires. (including “S” model)

One clutch kit that can be set up for different tires and conditions means accurate calibration for your own situation. Improved belt grip and performance.

Along with new springs for both clutches, this kit includes a new version of Dalton's Patented Quick Adjust flyweights. Extensive testing led to the development of a new base flyweight that was designed specific to the Scrambler 1000. A different curvature and location of mass than on previous or other versions. With Dalton "Quick Adjust" you can add or subtract mass from the flyweight without even removing the flyweight from the clutch, making fine tuning easy.

There is a very detailed instruction manual included that not only helps you understand clutch tuning components, but also a detailed "set up guide" to show you how to set up the kit for the different tire sizes and applications.

Manufacturers Link