Yamaha Grizzly 660 Power Steering Kit by SuperATV

Ask a question

Regular Price: $749.95

Special Price $649.95

Availability: In Stock

Drastically reduces steering effort and eliminates bump steering. Compact and watertight control box plus connectors. Features a 220W motor. No soldering required to install.
Add to Wishlist
Verify your product fitment.

SKU: PS-Y-G660
Brand: SuperATV

Yamaha Grizzly 660 Power Steering Kit

EZ-STEER power steering kit for the Yamaha Grizzly 660 is the most advanced kit on the market. Designed to make your ride better, EZ-STEER drastically reduces steering effort allowing for longer more enjoyable rides. Along with enhanced steering, power steering will virtually eliminate bump steer and provide a smooth and consistent ride.

Unlike other kits, EZ-STEER has sealed input and output shaft as well as a unique injection molded Control Box seal guaranteeing a 100% watertight kit. What does this mean for you? Submerge, pressure wash, or hose- our sealed circuit board is guaranteed to keep you going.

Each EZ-STEER design endures rigorous testing to ensure the highest customer satisfaction in the industry. Maneuver through the rocks and technical terrain with more control. Speed through uneven terrain without wheel jerk. Dominate the mud holes and come out with ease.

Yamaha Grizzly 660 Power Steering Kit Features

  • Reduces Steering Effort
  • Speed Sensitive Unit
  • Eliminates Bump Steer
  • Compact Control Box For Easier Mounting And Installation
  • NO Soldering Required For EZ-Steer Wiring
  • Sealed Input and Output Shafts
  • Watertight Control Box And Connectors
  • Powerful 220W motor
  • Fits: Yamaha Grizzly 660: 2002-2008


*Pricing mentioned in video reflects 2015 pricing which is no longer offered by the manufacturer. The price shown at the top of the page is the lowest retail price offered by the manufacturer, and cannot be found elsewhere for less.

Warning: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

2008 Fitments

  • 2008 Grizzly 660/700

2007 Fitments

  • 2007 Grizzly 660/700

Yamaha Grizzly 660_Power Steering Kit_PS-Y-G660_1

Yamaha Grizzly 660_Power Steering Kit_PS-Y-G660_2


              - Before installing, ensure that all waterproof connections are properly seated.

              - If Gaskets are not seated, as shown, use a Flathead Screwdriver to seat.

Yamaha Grizzly 660_Power Steering Kit_PS-Y-G660_3

          Power Steering will provide multiple improvements to your machine. After installation, it is highly recommend to take time and learn your machines new handling               characteristics and feel. Key Recommendations:

         1. Power Steering Benefits will be noticed as soon as machine is moving.

         2. Handlebar will have more noticeable deflection while at rest. As a result of speed sensitive operation, this is normal.

         3. Check steering sensitivity at multiple speeds to best understand new handling characteristics and feel.

         4. Without Throttle input, turning Handlebar back and forth unnecessarily is not recommended. This action is very hard on remaining stock steering components, Tie              Rod Ends, and Power Steering unit. Like all SuperATV products, Power Steering kits were designed with riders in mind.


                                                       For reference, photographing of removal process is highly recommended due to

                                                       amount of components being removed from machine.


           Removal: Keep all stock hardware removed from machine.

          1. Raise front of machine, secure with jack stands; and remove Wheels.

          2. Remove Tie Rods. See Fig. 1.

          3. Remove Nut Washer, and Pin from Steering Shaft. See Figs. 1 - 1a.

          4. Remove Seat.

          5. Remove Cargo Rack and Tray. See Figs. 2 - 2a.

          6. Remove Side Covers. See Fig. 3.

          7. Remove Tank Cover. See Fig. 4.

          8. Remove Handlebar Cover and Gauge Pod. See Fig. 5.

         9. Remove hardware from Handlebar Holders and Bracket. Lay Handlebar out of way. See Figs. 6 - 6a.

        10. Remove Lockwasher, Bracket, Steering Bearings, and Oils Seals from Steering Shaft. See Figs. 7 - 7a.

        11. From top of machine pull Steering Shaft out

Yamaha Grizzly 660_Power Steering Kit_PS-Y-G660_4


Yamaha Grizzly 660_Power Steering Kit_PS-Y-G660_5

Yamaha Grizzly 660_Power Steering Kit_PS-Y-G660_6

Yamaha Grizzly 660_Power Steering Kit_PS-Y-G660_7

           Do not tighten hardware completely unless noted.


          1. Install Lower Shaft (H) to stock location. Secure with stock hardware. See Figs. 1 - 1a. Loosely reinstall Tie Rods with stock hardware.

          2. Install Motor (K) onto Lower Shaft (H). Secure with provided hardware. See Motor Shafts Detail and Fig. 1.

         3. Install Mounting Bracket (N) to Motor (K) with M8 x 20mm Lg. FHCS (A). See Figs. 2 - 2b.

         4. From top of machine, install Upper Shaft (G) to Motor (K). Secure to Motor (K) with provided hardware. See Figs. 2 and 3a. - Reinstall Lockwasher, Bracket,                      Steering Bearings, Oil Seals, Upper Shaft (G) to Frame with stock hardware. See Fig. 3b.

         5. Install Support Bracket (E) to Mounting Bracket (N) with M8 x 25mm Lg. HHCS (S), M8 Flat Washers (T), and M8 Nylock Nuts (U). See Figs. 4 - 4a. - Secure                  Support Bracket (E) to Frame with M6 x 40mm Lg. HHCS (F), M6 Flat Washers (Q), and M6 Nylock Nut (R). See Figs. 4 - 4a. 6. Locate Selector Bracket, as                    shown in Fig. 5, and remove stock Bolt. Install Stiffener (D) with stock Bolt. See Figs. 5 - 5b. - Install oposite end of Stiffener (D) to Support Bracket (E) with M8              x 25mm Lg. HHCS (S), M8 Flat Washers (T), and M8 Nylock Nut (U). See Figs. 5 - 5b. 7. On right side of machine, install M6 Flat Washer (Q) and M6 x 40mm                Lg. HHCS (F) as shown in Fig.

        6. - Install ECU/Bracket Assembly (J)(P) and secure with M6 Flat Washer (Q), and M6 Nylock Nut (R). See Figs. 6 - 6b. - Plug in Wire Harness (L) but do not wire.

                                                     Handlebar should be inline with Tie Rods before tightening hardware.

                                                     Lift Handlebar up and off of Motor (K) and realign if not.

         8. Reinstall Handlebar Holders, Bracket, and Handlebar with stock hardware.

         9. Make wire connections. See Wiring Details pages 11 - 12.

        10. Tighten all hardware completely.

        11. Reverse steps taken during “Removal” and reinstall components.

Yamaha Grizzly 660_Power Steering Kit_PS-Y-G660_8

Yamaha Grizzly 660_Power Steering Kit_PS-Y-G660_9


Yamaha Grizzly 660_Power Steering Kit_PS-Y-G660_10

Yamaha Grizzly 660_Power Steering Kit_PS-Y-G660_12

Yamaha Grizzly 660_Power Steering Kit_PS-Y-G660_13

              Soldering connection is recommended however, installer may use other forms of connecting.

             1. Locate Connector shown in Fig. A.

             2. Connect White Wire from Wire Harness (L) to Blue with Yellow Striped wire. Scotch Lock, Spade Connector, or solder. See Figs. A - B.


Only registered users can write reviews. Please, log in or register

* Required Fields