Description
Add On-Demand 4×4 Capability to Your Electric Golf Cart
The SilverWolf Discovery 4-Wheel Drive Electric Motor Kit transforms a properly equipped electric golf cart into a far more capable machine for hills, loose terrain, rural property, hunting land, campgrounds, farms, and off-road recreation.
Instead of replacing the original rear drivetrain, Discovery adds two independent electric motors at the front wheels. These compact direct-drive motors supply additional front-wheel torque when the system is engaged, working alongside the cartโs existing rear drive system.
The driver controls the system with a three-position dash switch:
- 4L for maximum low-speed torque
- OFF for conventional rear-wheel-drive operation
- 4H for smoother assistance across a broader low-speed range
Both 4L and 4H work while traveling forward or in reverse. The system can also be engaged or disengaged on the fly without stopping the cart.
Two Direct-Drive Front Motors
Discovery uses two brushless reversing permanent-magnet direct-drive motors mounted within the front-wheel assemblies.
Replacing the original front spindle and hub arrangement with SilverWolfโs vehicle-specific motor adapters allows the front wheels to contribute powered traction without adding a conventional transfer case, driveshaft, or front differential.
Both front motors operate together. Electronic differentiation automatically reduces the effort from the inside motor while turning, helping the cart steer naturally with the system engaged.
On a standard cart with an open rear differential, both front wheels and at least one rear wheel provide powered traction. A cart equipped with a limited-slip rear differential can provide powered traction through all four wheels.
Selectable 4 Low and 4 High Modes
Discovery gives the driver two distinct traction modes.
4 Low
Use 4L when maximum low-speed torque is needed for:
- Steep climbs
- Loose or muddy ground
- Deep grass
- Sandy terrain
- Controlled trailer movement
- Working around rural property
- Low-speed obstacle negotiation
SilverWolf states that 4L supplies maximum torque through approximately 9 mph before the front motors disengage and freewheel.
4 High
Use 4H when smoother additional traction is preferred across a somewhat broader speed range.
SilverWolf states that 4H supplies front-wheel torque through approximately 12 mph. Above the assistance range, the front motors disengage and freewheel for efficiency.
Discovery is a traction and low-speed torque system. It is not designed to increase the golf cartโs maximum speed.
More Traction for Hills and Challenging Terrain
The Discovery system gives a compatible golf cart additional pulling and climbing ability precisely where a conventional two-wheel-drive cart is most likely to struggle.
It is particularly useful for:
- Hunting properties
- Farms and rural acreage
- Campgrounds
- Lake and beach communities
- Utility work
- Muddy trails
- Sandy ground
- Wet grass
- Uneven terrain
- Steep driveways
- Recreational off-road use
The extra torque and traction do not increase the golf cartโs published gross vehicle weight rating, payload capacity, or towing rating. Never exceed the vehicle manufacturerโs loading or towing limits.
Front Regenerative and Anti-Lock Braking
The powered front motors also contribute regenerative braking and front-wheel anti-lock braking functionality.
Regenerative braking converts some of the cartโs kinetic energy back into electrical energy during deceleration. Front-wheel braking assistance can also improve braking control compared with carts that rely primarily on rear drum brakes.
These features supplement the golf cartโs original braking system. They do not eliminate the need to maintain the factory brakes or operate at a speed appropriate for the terrain, passengers, cargo, and weather conditions.
SilverWolf Smartphone App
The included Golf Cart Module communicates with the SilverWolf smartphone app.
Depending on the system configuration and software version, the app provides access to information such as:
- Vehicle speed
- Battery level
- System power
- Motor and controller status
- Operating settings
- System diagnostics
The SilverWolf app is required during system setup. Download and register the app before beginning installation.
Phone compatibility, app functions, and software availability may change as SilverWolf updates the platform.
Fully Enclosed Front Motors
SilverWolf describes the Discovery front motors as fully enclosed and waterproof for operation through wet, muddy environments, shallow streams, and puddles.
The system should never be treated as suitable for indefinite submersion.
SilverWolf instructs owners not to leave the motors submerged for more than 30 minutes and to park the cart in a dry, open area after wet use. The motor controllers and other electrical components must remain dry and should never be submerged or cleaned with a direct pressure-washer stream.
Published Discovery System Specifications
Motor type: Brushless reversing permanent-magnet direct drive
System voltage range: 48Vโ72V
Published maximum output: 5 kW
Published peak torque: 300 Nm
Maximum motor speed: 500 RPM at 48V
Published maximum efficiency: 88%
Application: Electric vehicle traction
Operating directions: Forward and reverse
Driver control: Dash-mounted 4L/OFF/4H switch
4L assistance: Maximum torque through approximately 9 mph
4H assistance: Torque through approximately 12 mph
Higher-speed behavior: Front motors disengage and freewheel
App support: SilverWolf smartphone app
Gas-cart compatibility: No
Choose the Correct Vehicle Application
The Club Car and E-Z-GO versions are not interchangeable.
Each version uses different vehicle-specific adapters, wiring, power cables, and fitment requirements. Customers must select the correct application before ordering.
Club Car Precedent, Onward and Tempo Requirements
Select SilverWolf part number PK-000048 only after confirming every requirement below.
Required Club Car configuration:
- Club Car Precedent, Onward or Tempo
- Within SilverWolfโs current 2004โ2021 eligibility range
- Electric powertrain
- Stock DC rear motor
- Curtis 1510 or 1515 controller
- Controller must not be Curtis 1515-5207
- OEM MCOR 3 or MCOR 4 resistive throttle
- APPS throttle is not compatible
- Approved 6-inch A-arm lift kit
- Heavy-duty solenoid with pre-charge resistor
- Solenoid rated for 400 amps continuous
- Compatible battery system
- Wheels at least 12 inches in diameter
- Compatible wheel offset
- Tires no taller than 23 inches
- Tires no wider than 10 inches recommended
The current SilverWolf requirements identify the following Club Car lift kits:
- Allsport ASM-P6A
- Allsport P6AHD
- Nivel MadJax/GTW 6-inch A-arm lift kit 18140
- Nivel MadJax/GTW 6-inch A-arm lift kit 16-035
- Nivel Jakeโs lift kit 7467
- RedHawk RHOX LIFT-563
Contact Peteโs Golf Carts before ordering if your lift kit is not on this list. SilverWolf may require photographs of the cart and lift-kit installation before approving an alternate setup.
This version does not fit Club Car AC carts.
E-Z-GO TXT Requirements
Select SilverWolf part number PK-000041 only after confirming every requirement below.
Required E-Z-GO configuration:
- E-Z-GO TXT
- 1996-present according to SilverWolfโs current requirements sheet
- 48V electric cart
- Curtis 1206HB original stock controller
- Stock 48V DC rear motor
- Stock straight front axle
- Non-lifted starting configuration
- Heavy-duty solenoid with pre-charge resistor
- Solenoid rated for 400 amps continuous
- Compatible battery system
- Wheels at least 12 inches in diameter
- Compatible wheel offset
- Tires no taller than 23 inches
- Tires no wider than 10 inches recommended
This version does not fit:
- 36V E-Z-GO TXT carts
- Carts with a drop-axle lift
- Carts without the required controller
- AC-converted carts
- Gas-powered carts
The E-Z-GO application has different suspension requirements from the Club Car application. Do not apply the Club Car lift requirements to an E-Z-GO TXT or assume an existing E-Z-GO lift will work.
Battery Requirements
The Discovery kit can operate with qualifying lead-acid or lithium batteries.
Lead-acid batteries must be new or in good operating condition.
SilverWolf specifies the following minimum lithium battery performance:
- At least 100 amps continuous discharge
- At least 200 amps maximum discharge for 10 seconds
- Nominal voltage no higher than 72V
Voltage alone does not establish compatibility. The battery management system must be capable of supporting the current required by the golf cart and Discovery system without shutting down.
Confirm compatibility before ordering if the cart uses an aftermarket lithium battery, custom battery system, nonstandard controller, or modified electrical system.
Wheel and Tire Requirements
The front motors are slightly larger than 10 inches in diameter and require adequate wheel clearance.
SilverWolf specifies:
- 12-inch or larger steel or aluminum wheels
- Centered or compatible 4-3 offset
- Tires no taller than 23 inches
- Recommended tire width of 10 inches or less
A 10.5-inch-wide tire may rub on some Club Car applications. Wider tires may rub on an E-Z-GO TXT.
Wheel diameter alone does not guarantee fitment. Backspacing, offset, barrel design, tire width, suspension type, and steering clearance must all be verified.
Do not purchase wheels or tires solely from their advertised diameter without confirming the complete dimensions.
RESOURCE LINKS:
Heavy-Duty Solenoid Requirement
Both applications require a heavy-duty solenoid with a pre-charge resistor rated for 400 amps continuous.
SilverWolf states that a diode fitted across the solenoid must be removed before installing the Discovery system.
Do not assume the stock solenoid meets this requirement. Confirm the existing solenoidโs rating and configuration before ordering the motor kit.
What Is Included?
The Discovery kit includes the major components required for the selected vehicle application:
- Two SilverWolf direct-drive front motors
- Two SW4000 motor controllers
- One Golf Cart Module
- Controller enclosure
- Dash-mounted 4L/OFF/4H switch
- Main Discovery wiring harness
- Vehicle-specific wiring harness
- Vehicle-specific battery power cables
- Left and right motor adapter brackets
- Wire guards and mounting brackets
- Controller mounting hardware
- Installation hardware
- Switch cutout template where applicable
- Cable ties and routing hardware
- Access to the SilverWolf smartphone app
- Application-specific installation instructions
Contents can change through manufacturer revisions. Compare the received components with the current SilverWolf parts list before beginning installation.
Required Supporting Components Not Included
Depending on the selected application and existing cart configuration, installation may also require:
- Approved 6-inch Club Car A-arm lift kit
- 400-amp continuous heavy-duty solenoid
- Pre-charge resistor
- Qualifying lead-acid or lithium battery
- Compatible 12-inch or larger wheels
- Properly sized tires
- Replacement steering or suspension components
- Alignment service
- Professional installation labor
Do not begin installation until every minimum requirement has been verified.
Plug-and-Play Electrical Integration With Significant Mechanical Installation
SilverWolf uses vehicle-specific harnesses that normally connect to the cart without cutting or rewiring the factory harness.
However, this is still a substantial drivetrain and suspension installation.
Installation includes tasks such as:
- Safely raising and supporting the vehicle
- Removing front wheels
- Removing factory front spindle and hub components
- Installing motor adapter brackets
- Installing both front motors
- Mounting two motor controllers and their enclosure
- Routing high-current power cables
- Routing communication and motor harnesses
- Installing the dash switch
- Connecting the Golf Cart Module
- Pairing and configuring the smartphone app
- Completing a wheels-off-ground pre-drive test
- Reassembling the cart
- Checking steering geometry
- Adjusting alignment
- Verifying tire and suspension clearance
The installer must read and follow the complete application-specific SilverWolf manual.
Although an experienced technician or highly capable DIY installer may complete the work with standard hand tools, a jack, jack stands, insulated electrical tools, and proper safety equipment, professional installation is strongly recommended when the customer is not comfortable working around high-current battery systems, suspension components, and wheel hubs.
Important Safety Information
The Discovery kit increases low-speed torque and available traction. Drivers must allow time to become familiar with the cartโs changed handling characteristics.
SilverWolf warns operators to:
- Keep speeds appropriate for the terrain
- Avoid abrupt acceleration while turning
- Keep both hands on the steering wheel
- Reduce speed while carrying passengers or cargo
- Allow additional room for stopping and turning while towing
- Travel straight up and down hills
- Avoid operating on slopes greater than 15 degrees
- Inspect shallow-water crossings before entering
- Avoid sudden drop-offs, large rocks, and slippery surfaces
- Never exceed the original vehicleโs payload, towing, or GVWR limits
- Keep electrical controllers and connections dry
- Never lift a motor by its power cable
- Never use impact tools on the motor bolts or wheel lug nuts
The motor kit does not turn a golf cart into a road-certified passenger vehicle, utility vehicle, or unrestricted all-terrain vehicle.
Why Buy From Peteโs Golf Carts?
The most important part of purchasing a Discovery kit is determining whether the cart actually qualifies for installation.
Peteโs Golf Carts can help review the cartโs model, year, voltage, controller, motor type, throttle, suspension, lift kit, battery, solenoid, wheels, and tires before the order is placed.
Providing photographs of the cart, controller label, motor label, front suspension, lift kit, battery label, solenoid, wheels, and tires can help identify compatibility issues before installation begins.
A careful pre-purchase review can prevent ordering the wrong application or discovering that the cart requires additional components after the kit arrives.
Frequently Asked Questions
Does the Discovery Kit Make My Golf Cart Four-Wheel Drive?
The system powers both front wheels while retaining the original rear drivetrain. With a conventional open rear differential, both front wheels and at least one rear wheel provide driven traction. A cart with a limited-slip rear differential can provide powered traction through all four wheels.
Will It Make My Golf Cart Faster?
No. Discovery is intended to add low-speed torque and traction rather than increase maximum vehicle speed.
SilverWolf states that the front motors assist through approximately 9 mph in 4L and 12 mph in 4H. They then disengage and freewheel.
Can I Engage 4WD While Moving?
Yes. SilverWolf states that the driver can engage or disengage the system using the dash switch without stopping the cart.
Does It Work in Reverse?
Yes. Both 4L and 4H operate in forward and reverse.
Can I Leave the System Engaged?
SilverWolf states that the system may remain engaged. The front motors automatically disengage and freewheel above their programmed assistance range.
Can I Install It on a Gas Golf Cart?
No. Discovery is designed for qualifying electric golf carts only.
Does It Work With Lithium Batteries?
Yes, when the lithium battery and battery management system meet SilverWolfโs voltage and current requirements.
The battery must provide at least 100 amps continuous discharge and 200 amps maximum discharge for 10 seconds. Nominal voltage cannot exceed 72V.
Will It Work With Any Club Car Precedent, Onward or Tempo?
No. The Club Car version is limited to qualifying DC carts with specific controllers, throttle systems, approved lift kits, electrical components, wheels, and tires.
It does not fit Club Car AC carts or carts using a Curtis 1515-5207 controller.
Will It Work With a 36V E-Z-GO TXT?
No. The E-Z-GO version requires a qualifying 48V TXT.
Will It Fit an E-Z-GO TXT With a Drop-Axle Lift?
No. SilverWolfโs current requirements specify a non-lifted E-Z-GO TXT with the stock straight axle. It does not fit a drop axle.
Are a Lift Kit, Wheels and Tires Included?
No. Required supporting components such as the Club Car lift kit, compatible wheels, tires, battery, and heavy-duty solenoid are separate unless explicitly included in a Peteโs Golf Carts bundle.
Will It Affect Driving Range?
SilverWolf states that the system has no measurable range effect when turned off. When operating, actual range will depend on terrain, vehicle load, battery condition, tire size, driving style, and how frequently the front motors are engaged.
Regenerative braking can recover some energy during deceleration, but no specific range increase should be guaranteed for an individual cart.
Can the Motors Get Wet?
The front motors are enclosed for wet and muddy conditions, but they should not remain submerged for more than 30 minutes. Motor controllers and other electrical components must not be submerged or pressure washed.
Can I Tow More Weight After Installing It?
No. Discovery adds traction and low-speed pulling power, but it does not increase the vehicle manufacturerโs towing rating, payload capacity, or GVWR.
Is Professional Installation Required?
SilverWolf presents the kit as suitable for qualified DIY or dealer installation, but it requires mechanical, suspension, electrical, alignment, and app-configuration work.
Professional installation is strongly recommended unless the installer has the proper tools, knowledge, and experience.
Does This Kit Include Front Braking?
The powered front motors provide regenerative braking and front-wheel anti-lock braking functionality. The cartโs original mechanical brakes must still be maintained in proper operating condition.
Warranty Information
SilverWolfโs current published warranty covers a new motor kit and accessories against defects in materials and workmanship for two years from the original retail purchase date, subject to its complete exclusions, limitations, and claim procedures.
Coverage applies to the original purchaser, and proof of purchase is required.
The warranty may exclude damage resulting from:
- Incorrect installation
- Failure to meet minimum vehicle requirements
- Abuse or abnormal strain
- Collision or impact
- Improper use
- Unauthorized modifications
- Disassembly of motors or controllers
- Non-approved components
- Submersion or improper environmental exposure
- Rental or public-use vehicles
Warranty terms can change. The SilverWolf warranty published at the time of purchase controls the claim.
