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Yamaha 660 Grizzly 4X4

Oversized tires

DBW 660Y
Suggested list price $118 CAD / $118 USD

Installation of larger tires results in taller gearing, heavier rotating mass, and a drastic negative effect on the performance of this model. This kit is designed to help restore that lost power, and bring your Big Tire Grizzly back to life. It was designed for use with oversized tires. Dalton does not currently recommend or offer a clutch kit for this model with stock tires.

Yamaha 700 Grizzly 4x4

07 and up 700EFI oversized tires/ altitude

DBW 700 Y
Suggested list price
$109 CAD / $109 USD

A very cost effective method to help minimize the performance losses from installing oversized tires. This combination of different weight rollers for the drive clutch is a variable tuning kit and can be set up for different oversized tire/ altitude applications. There is no increase in engagement (stall) rpm, so this kit still works well for low speed manoeverablilty like rock crawling, etc.

Some Notes on this Model DBW 700 Y

The new Yamaha Grizzly 700 4x4 is a new improved version of its 660cc predecessor. Although the 686cc engine is not substantially larger or more powerful, it certainly has improved torque, throttle response and smoothness as a result of the electronic fuel injection (EFI). In stock form, the factory clutch calibration is fine for the supplied 25" tires, and no recalibration is necessary for the stock tires. Many consumers prefer the ground clearance and traction advantage of larger, more aggressive mud tires. Most, however, are not prepared for the amount of performance lost by installing bigger tires. Installing larger, heavier tires on this model does have a drastic negative effect on acceleration performance. Although an ATV with oversized tires can never be as quick as one with light weight stock tires, this kit can help recover some of the losses and breath some life back into your Grizzly. On the previous 660 models we have always included a new heavier secondary spring for the rear pulley. The new 700 model, however, comes from the factory with its own new heavier secondary spring that has proven satisfactory.

Yamaha Rhino 4X4 Utility Vehicle

Since we are in the CVT clutch industry we are often asked about the popular Yamaha Rhino . As you can see we do not offer a complete clutch kit for this vehicle. We do however offer some inexpensive componets that can help a few issues.

On any vehicle we expect to meet certain criteria for benefeits and gains ,and that criteria also means not substantial trade offs to achieve the gains. There is also a cost / benefeit factor. There are in fact, times when the factory calibration is done fairly well for the power/gearing/weight ratio that you have to work with . A complete CVT recalibration on some vehicles,in our opinion,is not necessary. Sometimes there are other fundamentals that may cause issues that some find undesirable,and sometimes a simple spring can help compensate with less side effects,or do as well as a more expensive kit. For instance, on a Rhino,reverse drive gearing is a ratio like high range(many feel reverse should be like low range like other similar vehicles). Others feel that forward low range is simply not low enough. If a final drive ratio is not in the envelope that the end user expects,we do not like to put any false hopes that re-calibrating how fast the belt shifts will solve all of that. Sometimes a simple component change like the secondary spring can get you some benefeit ,and at least it is cost effective to do.

New Optional Secondary Springs -Grizzly/Rhino 4x4 Utility

Part# DPSS-M/B (Metallic Blue)
Suggested list price $41 CAD / $41 USD

Metallic Blue secondary spring is heavier than the secondary spring in our DBW660Y Grizzly kit. It can be used as an accessory to aid the 660/700 Grizzly 4X4 atv's in serious mud applications with 28" and larger Agressive Mud Specific tires. For trail riding and tires smaller,or less agressive ,the plain w/pink stripe spring in our DBW660Y kit is better and more appropriate. Also the stock spring on the 700 Grizzly's would be better unless using these specific tires. For GRIZZLY ATV applications this spring is only for the big agressive mud competition tires.

This spring is also appropriate to help with bottom end and mid range response on 660 RHINO applications using heavier stock size, or 26-27 inch tires. Helps slow the initial upshift of the belt,and get rpm quicker on initial take off. Also helps with power loss from Sand applications.

Part# DPSS-M/R (Metallic Red)
Suggested list price $41 CAD / $41 USD

Metallic Red secondary spring is heavier load rating than the metallic blue (see "components" page for load ratings). For use in 700 Rhino applications for heavier tires 26" and up.

Also used for 660 Rhino when running 28" and larger tires.

FAQ- How will a clutch kit affect top end speed?

Very little. The major thing to remember when clutching ATVs is that changing clutch components changes the rate of shift on the CVT system during the "clutching phase". The clutching phase is when the belt travels from low ratio to high ratio (high ratio is when the belt is to the top of its travel on the front motor clutch). The goal is to control the shift RPM properly during this clutching phase. On most ATVs this "clutching phase" is over in a distance of approximately 500-800 ft.-when the belt is fully shifted, it is fully shifted. There are a few situations where slightly different spring pressures will allow it to stay in high ratio easier on certain types of terrain, but effect on top mph is minimal.

North American Made

At Dalton Industries, we strive to source as many materials as possible from United Stated and Canadian sources. Machining is done in house and we make an extra effort to ensure as many fasteners,etc. as possible have origin in North America.

 
 
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